Thursday 30 June 2016

The energy spectrum of particles will help make out black holes

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Scientists have devised a method of distinguishing black holes from compact massive objects that are externally indistinguishable from one another. The method involves studying the energy spectrum of particles moving in the vicinity - in one case it will be continuous and in the other it will be discrete.
via Science Daily
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A bewildering form of sand dune discovered on Mars

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Some of the wind-sculpted sand ripples on Mars are a type not seen on Earth, and their relationship to the thin Martian atmosphere provides new clues about the atmosphere's history.
via Science Daily
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‘Building blocks for life' may originate in space

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Amino acids are the building blocks for life on earth. They may originate in space and reach the earth via comets and meteorites.
via Science Daily
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Hubble captures vivid auroras in Jupiter’s atmosphere

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Astronomers are using the NASA/ESA Hubble Space Telescope to study auroras -- stunning light shows in a planet's atmosphere -- on the poles of the largest planet in the Solar System, Jupiter.
via Science Daily
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Hubble Captures Vivid Auroras in Jupiter's Atmosphere


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Astronomers are using NASA's Hubble Space Telescope to study auroras stunning light shows in a planet's atmosphere on the poles of the largest planet in the solar system, Jupiter. The auroras were photographed during a series of Hubble Space Telescope Imaging Spectrograph far-ultraviolet-light observations taking place as NASA's Juno spacecraft approaches and enters into orbit around Jupiter. The aim of the program is to determine how Jupiter's auroras respond to changing conditions in the solar wind, a stream of charged particles emitted from the sun. Auroras are formed when charged particles in the space surrounding the planet are accelerated to high energies along the planet's magnetic field. When the particles hit the atmosphere near the magnetic poles, they cause it to glow like gases in a fluorescent light fixture. Jupiter's magnetosphere is 20,000 times stronger than Earth's. These observations will reveal how the solar system's largest and most powerful magnetosphere behaves.


via HubbleSite NewsCenter -- Latest News Releases
http://hubblesite.org/newscenter/archive/releases/2016/24/

The New World Atlas of Artificial Sky Brightness

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How far are you from a naturally dark night sky? In increasing steps, this world map (medium | large) shows the effect of artificial night sky brightness on the visual appearance of the night sky. The brightness was modeled using high resolution satellite data and fit to thousands of night sky brightness measurements in recent work. Color-coded levels are compared to the natural sky brightness level for your location. For example, artificial sky brightness levels in yellow alter the natural appearance of the night sky. In red they hide the Milky Way in an artificial luminous fog. The results indicate that the historically common appearance of our galaxy at night is now lost for more than one-third of humanity. That includes 60% of Europeans and almost 80% of North Americans, along with inhabitants of other densely populated, light-polluted regions of planet Earth.
Tomorrow's picture: pixels in space
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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC
& Michigan Tech. U.

Rosetta finale set for 30 September

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Rosetta is set to complete its mission in a controlled descent to the surface of its comet on 30 September.


via ESA Space Science
http://www.esa.int/Our_Activities/Space_Science/Rosetta/Rosetta_finale_set_for_30_September

Surface of Mercury arose from deep inside the planet

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Researchers have found that several volcanic deposits on Mercury's surface require mantle melting to have started close to the planet's core-mantle boundary, which lies only 400 km below the planets surface and making it unique in the solar system.
via Science Daily
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Wednesday 29 June 2016

Duvet covers to dream for

Just imagine, a stress-free, relaxing amble through a leafy glade, the sound of water gently gushing by. The sunlight filters through the green canopy to dapple the banks of the soothing river.
Just one of our artistic range of duvet covers.
Click the one you like most to choose your size and see prices.


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My photography on products from Zazzle. Great delivery options, fantastic quality and superb customer service!

Surprising qualities of insulator ring surfaces

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Topological insulators behave like insulators at their core and allow good conductivity on their surface. They owe their characteristics to a new quantum state within the material discovered in 2007 and 2009 for 2-D and 3-D materials, respectively. Scientists studying the surface of ring-shaped, or toric, topological insulators, have just discovered some characteristics that had only previously been confirmed in spheres.
via Science Daily

Some surfaces are wetted by water, others are water-repellent: A new material can be both

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Scientists have discovered a robust surface whose adhesive and wetting properties can be switched using electricity.
via Science Daily

Home Decor for Earth-bound astronauts

You're here because you love all things space. You've got a curious nature and would love to be able to explore the vast reaches of space like shown in the movies.
Well, you can fill your home with real pictures from space. All the decor you can imagine!


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Each of these home decor items is designed by me, HightonRidley. Printed and supplied by Zazzle, the quality is great and the customer service , if you need it, is amongst the best. Worry-free :)
So don't delay, click any you like the look of for more detail and prices.

German Astronomical Society (AG) Awards Robert Williams the Karl Schwarzschild Medal


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The German Astronomical Society (AG) has announced that the most prestigious prize in Germany in the field of astronomy and astrophysics, the Karl Schwarzschild Medal, will be awarded this year to Robert Williams of the Space Telescope Science Institute (STScI) in Baltimore, Maryland. In Robert Williams the AG honors not only an outstanding scientist, but also a man with a dedication to scientific training and astronomical outreach. His name is inseparably linked to the most celebrated observation target of the Hubble Space Telescope (HST): the famous Hubble Deep Field (HDF). The German Astronomical Society will award the Karl Schwarzschild Medal, whose previous recipients include five Nobel laureates, to Robert Williams on September 13, 2016, during the opening ceremony of the annual conference of the AG in Bochum, Germany. The award is named after the German physicist and astronomer Karl Schwarzschild (1863-1916), one of the pioneers of modern astrophysics.


via HubbleSite NewsCenter -- Latest News Releases
http://hubblesite.org/newscenter/archive/releases/2016/25/

Space team discovers universe is self-cleaning

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Astronomers have released a catalog of the hidden universe, which reveals the unseen sources of energy found over the last 12 billion years of cosmic history.
via Science Daily
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How planetary age reveals water content

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Water is necessary for life as we know it, but too much water is bad for habitability. Therefore, to study the habitability of extrasolar planets, determining the abundance of water is a key element. Astronomers now show that the observation of exoplanets at different ages can be used to set statistical constraints on their water content -- an important result for future space missions.
via Science Daily
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Tracking solar eruptions in 3D

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Scientists have developed an automated method for three-dimensional tracking of massive eruptions from the Sun, called Coronal Mass Ejections (CMEs). The Automated CME Triangulation (ACT) system uses data from three space-based observatories that orbit the Sun at different locations, allowing scientists to view the Sun and CMEs from different angles. ACT's ability to track whether a CME is heading towards Earth, and when it is likely to reach us, should lead to significant improvements in space weather forecasting.
via Science Daily
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From Alpha to Omega in Crete

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This beautiful telephoto composition spans light-years in a natural night skyscape from the island of Crete. Looking south, exposures both track the stars and record a fixed foreground in three merged panels that cover a 10x12 degree wide field of view. The May 15 waxing gibbous moonlight illuminates the church and mountainous terrain. A mere 18 thousand light-years away, huge globular star cluster Omega Centauri (NGC 5139) shining above gives a good visual impression of its appearance in binoculars on that starry night. Active galaxy Centaurus A (NGC 5128) is near the top of the frame, some 11 million light-years distant. Also found toward the expansive southern constellation Centaurus and about the size of our own Milky Way is edge on spiral galaxy NGC 4945. About 13 million light-years distant it's only a little farther along, and just above the horizon at the right.
Tomorrow's picture: the artificial night
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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC
& Michigan Tech. U.

Graphene oxide and rGO microparticles not toxic to mouse lung cells

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Recent research showed that graphene (reduced graphene oxide, rGO) and graphene oxide (GO) particles larger than 1 micron in size are not cytotoxic or genotoxic to mouse lung cells. The study, performed using Graphenea graphene and involving the company's scientists, tested GO and rGO toxicity epithelial FE1 cells in vitro. GO and rGO have potential uses in biomedical applications, for example in biosensors, as a substrate in mass spectroscopy and for cell growth, and as drug delivery carriers.

Toxicity of nanoparticles (NP) is an important topic, due to the growing prevalence of NPs in research and production. Because of the multitude of compositions, shapes, and sizes of NPs, toxicity is an issue that needs to be addressed to each type of NP separately.

Figure: Morphology of GO and rGO (Wiley).

 

The first step in toxicity research always takes place “in vitro”, where cells are exposed to the potentially harmful agent and later analyzed for damage. The latest research, involving eight institutions from Denmark, France, and Spain, concluded that few layered GO and rGO with lateral size above 1 micrometer were not cytotoxic or genotoxic to FE1 mouse epithelial cells at concentrations up to 200 micrograms/ml. Mouse lung cells are commonly used in the first steps of toxicity studies. Although our study shows that no DNA strand breaks occur in cells due to exposure to GO and rGO particles of this size, earlier studies reveal that smaller particles, i.e. GO nanoparticles with sizes smaller than 500 nm, do cause DNA strand breaks. Carbon black has also been shown to be toxic and possibly carcinogenic to humans.

The research was published in the journal Environmental and Molecular Mutagenesis.


via Graphenea

Tuesday 28 June 2016

Hubble reveals stellar fireworks in 'skyrocket' galaxy

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A new Hubble Space Telescope image shows a firestorm of star birth lighting up one end of the diminutive galaxy Kiso 5639. The dwarf galaxy is shaped like a flattened pancake, but because it is tilted edge-on, it resembles a skyrocket, with a brilliant blazing head and a long, star-studded tail. Kiso 5639 is a member of a class of galaxies called "tadpoles" because of their bright heads and elongated tails. This galaxy resides relatively nearby, at 82 million light-years away. Tadpoles are rare in the local universe but more common in the distant cosmos, suggesting that many galaxies pass through a phase like this as they evolve.
via Science Daily
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Hubble Reveals Stellar Fireworks in 'Skyrocket' Galaxy


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As we celebrate the Fourth of July by watching dazzling fireworks shows, another kind of fireworks display is taking place in a small, nearby galaxy.


via HubbleSite NewsCenter -- Latest News Releases
http://hubblesite.org/newscenter/archive/releases/2016/23/

Rotating ring of complex organic molecules discovered around newborn star: Chemical diversity in planet forming regions unveiled

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Researchers have discovered a rotating ring containing large organic molecules around a protostar. This observation definitively shows that organic materials formed in interstellar space are brought into the planet-forming region. Researchers also found that the molecular species brought into the planet-forming region vary from one protostar to another. Chemical composition is a new way to answer the long-standing question of whether or not the Solar System is a typical example of a planetary system.
via Science Daily
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Astronomers release spectacular survey of the distant Universe

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Astronomers have released spectacular new infrared images of the distant Universe, providing the deepest view ever obtained over a large area of sky.
via Science Daily
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Researchers discover a new method to boost oil recovery

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As oil producers struggle to adapt to lower prices, getting as much oil as possible out of every well has become even more important, despite concerns from nearby residents that some chemicals used to boost production may pollute underground water resources. Researchers have reported the discovery of a nanotechnology-based solution that could address both issues -- achieving 15 percent tertiary oil recovery at low cost, without the large volume of chemicals used in most commercial fluids.
via Science Daily

Clandestine black hole may represent new population

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Astronomers have concluded that a peculiar source of radio waves thought to be a distant galaxy is actually a nearby binary star system containing a low-mass star and a black hole. This identification suggests there may be a vast number of black holes in our Galaxy that have gone unnoticed until now.
via Science Daily
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Synthesized microporous 3D graphene-like carbons

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Zeolites' nanoporous systems are an ideal template for the synthesis of three-dimensional (3D) graphene architecture, but the high temperatures required for their synthesis cause the reactions to occur non-selectively. The research team lowered the temperature required for the carbonization by embedding lanthanum ions (La3+), a silvery-white metal element, in zeolite pores.
via Science Daily

Juno Mission Trailer

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NASA’s Juno Mission Is to Be Captured by Jupiter

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The spacecraft is to orbit the largest planet in the solar system, perhaps gaining insight into the origin of Earth.
via New York Times

Minor mergers are major drivers of star formation

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Around half of the star formation in the local Universe arises from minor mergers between galaxies, according to data from the Sloan Digital Sky Survey. The patch of sky called Stripe 82 is observed repeatedly to produce high-quality images of spiral galaxies. Disruptions to the shapes of these galaxies, caused by interactions with their smallest neighbors, pointed to increased star formation.
via Science Daily
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Meet RobERt, the dreaming detective for exoplanet atmospheres

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Machine-learning techniques that mimic human recognition and dreaming processes are being deployed in the search for habitable worlds beyond our solar system. A deep belief neural network, called RobERt (Robotic Exoplanet Recognition), has been developed by astronomers to sift through detections of light emanating from distant planetary systems and retrieve spectral information about the gases present in the exoplanet atmospheres.
via Science Daily
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Monday 27 June 2016

Mercury's origins traced to rare meteorite

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Geologists trace Mercury's origins to weird, rare meteorite, and find planet cooled dramatically shortly after it formed.
via Science Daily
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NASA rover findings point to a more Earth-like Martian past

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Chemicals found in Martian rocks by NASA's Curiosity Mars rover suggest the Red Planet once had more oxygen in its atmosphere than it does now. The findings add to evidence revealing how Earth-like our neighboring planet once was.
via Science Daily
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Fastest-spinning brown-dwarf star is detected by its bursts of radio waves

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Astronomers have detected what may be the most rapidly rotating, ultra-cool, brown-dwarf star ever seen. The super-fast rotation period was measured by using the 305-meter Arecibo radio telescope -- the same telescope that was used to discover the first planets ever found outside our solar system. The detection emphasizes Arecibo's amazing sensitivity, which has the potential to measure the magnetic fields, which protect life, of potentially habitable planets around other stars.
via Science Daily
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The Martian becomes reality: At least four crops grown on simulated Mars soil are edible

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Scientists are working on growing crops on Mars and moon soil simulants. Just like the real Martian and moon soil these contain heavy metals in almost the same quantities. Four of the crops grown were tested for heavy metal content. No concentrations were detected that would be dangerous for human health. The four crops are therefore safe to eat and, for some heavy metals, the concentrations were even lower than in the crops grown in potting soil.
via Science Daily
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Seeds of black holes could be revealed by gravitational waves detected in space

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Gravitational waves captured by space-based detectors could help identify the origins of supermassive black holes, according to new computer simulations of the universe.
via Science Daily
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Glorious, glowing Jupiter awaits Juno’s arrival

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Stunning new images and the highest-resolution maps to date of Jupiter at thermal infrared wavelengths give a glowing view of Juno's target, a week ahead of the NASA mission's arrival at the giant planet. The maps reveal the present-day temperatures, composition and cloud coverage within Jupiter's dynamic atmosphere, and show how giant storms, vortices and wave patterns shape the appearance of the giant planet.
via Science Daily
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Opal discovered in Antarctic meteorite

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Planetary scientists have discovered pieces of opal in a meteorite found in Antarctica, a result that demonstrates that meteorites delivered water ice to asteroids early in the history of the solar system.
via Science Daily
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Anticrepuscular Rays over Colorado (II)

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In full flight

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Space Science Image of the Week: Testing the parachute that will slow Schiaparelli for a Mars landing
via ESA Space Science
http://www.esa.int/spaceinimages/Images/2016/06/Testing_Schiaparelli_s_parachute

This message will self-destruct

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In movies and television shows, audio tapes or other devices self-destruct after delivering the details of impossible missions. Scientists have taken it to a new level.
via Science Daily

Saturday 25 June 2016

Strawberry to Honey Moonrise

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Near the horizon the Full Moon often seems to loom large, swollen in appearance by the famous Moon illusion. But timelapse images demonstrate that the Moon's apparent size doesn't really change as it climbs toward the zenith. Its color does, though. Recording a frame every 10 seconds, this image shows how dramatic that color change can be. The composite follows a solstice Full Moon climbing above a rugged horizon over northwestern Indiana. A shrinking line-of-sight through planet Earth's dense and dusty atmosphere shifted the moonlight from strawberry red through honey-colored and paler yellowish hues. That change seems appropriate for a northern June Full Moon also known as the Strawberry or Honey Moon.
Tomorrow's picture: from New Horizons
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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC
& Michigan Tech. U.

Detailed plans for largest neutrino telescope in the world

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A deep-sea array will soak up signals from neutrinos traveling through the cosmos to study the evolution of the universe and to discover more about the fundamental properties of these prized sub-atomic particles.
via Science Daily
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Giant Blobs of Rock, Deep Inside the Earth, Hold Important Clues About Our Planet

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Two massive blob-like structures lie deep within the Earth, roughly on opposite sides of the planet. The two structures, each the size of a continent and 100 times taller than Mount Everest, sit on the core, 1,800 miles deep, and about halfway to the center of the Earth. Researchers suggest these blobs are made of something different from the rest of Earth's mantle, and are determined to figure out what that is.
via Science Daily
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Friday 24 June 2016

Proper breeding ground for germanene

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Germanene is a one atom thick sheet of germanium, in a honeycomb structure. It has clear similarities with graphene, the material that induced massive research activity worldwide, especially after 2010's Nobel Prize. A major difference between graphene and germanene is the 'band gap', a property well-known in semiconductor electronics: thanks to this 'jump' of energy levels that electrons are allowed to have, it is possible to control, switch and amplify currents. Graphene had a very small band gap that can only be measured at very low temperatures, germanene shows a band gap that is significantly larger. Previous attempts to grow germanene, however, show that these attractive properties seem to vanish when it is grown on a metal surface: a good conductor of current. To prevent this, the scientists chose the semiconductor MoS2 as the substrate material.
via Science Daily

Sagittarius Sunflowers

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These three bright nebulae are often featured in telescopic tours of the constellation Sagittarius and the crowded starfields of the central Milky Way. In fact, 18th century cosmic tourist Charles Messier cataloged two of them; M8, the large nebula left of center, and colorful M20 near the bottom of the frame The third, NGC 6559, is right of M8, separated from the larger nebula by dark dust lanes. All three are stellar nurseries about five thousand light-years or so distant. The expansive M8, over a hundred light-years across, is also known as the Lagoon Nebula. M20's popular moniker is the Trifid. In the composite image, narrowband data records ionized hydrogen, oxygen, and sulfur atoms radiating at visible wavelengths. The mapping of colors and range of brightness used to compose this cosmic still life were inspired by Van Gogh's famous Sunflowers. Just right of the Trifid one of Messier's open star clusters, M21, is also included on the telescopic canvas.
Tomorrow's picture: light-weekend
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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC
& Michigan Tech. U.

Thursday 23 June 2016

Hubble confirms new dark spot on Neptune

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New images confirm the presence of a dark vortex on Neptune. Though similar features were seen during the Voyager 2 flyby of NASA's Hubble Space Telescope in 1989 and by Hubble in 1994, this vortex is the first one observed on Neptune in the 21st century.
via Science Daily
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Hubble Confirms New Dark Spot on Neptune


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Pancake-shaped clouds not only appear in the children's book "Cloudy With a Chance of Meatballs," but also 3 billion miles away on the gaseous planet Neptune. When they appeared in July 2015, witnessed by amateur astronomers and the largest telescopes, scientists suspected that these clouds were bright companions to an unseen, dark vortex. The dark vortex is a high-pressure system where the flow of ambient air is perturbed and diverted upward over the vortex. This forms huge, lens-shaped clouds, that resemble clouds that sometimes form over mountains on Earth.


via HubbleSite NewsCenter -- Latest News Releases
http://hubblesite.org/newscenter/archive/releases/2016/22/

GraphExeter illuminates bright new future for flexible lighting devices

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Researchers have pioneered an innovative new technique to make flexible screens more effective and efficient. GraphExeter -- a material adapted from the 'wonder material' graphene -- can substantially improve the effectiveness of large, flat, flexible lighting, say investigators.
via Science Daily

Successful first observations of galactic center with GRAVITY

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A European team of astronomers have used the new GRAVITY instrument at ESO's Very Large Telescope to obtain exciting observations of the center of the Milky Way by combining light from all four of the 8.2-meter Unit Telescopes for the first time. These results provide a taste of the groundbreaking science that GRAVITY will produce as it probes the extremely strong gravitational fields close to the central supermassive black hole and tests Einstein's general relativity.
via Science Daily
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Solstice Dawn and Full Moonset

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A Full Moon sets as the Solstice Sun rises in this June 20 dawn skyscape. Captured from a nearby peak in central California, planet Earth, the scene looks across the summit of Mount Hamilton and Lick Observatory domes on a calendar date that marks an astronomical change of seasons and hemispherical extremes of daylight hours. Earth's shadow stretches toward the Santa Cruz Mountains on the western horizon. Just above the atmospheric grey shadowband is a more colorful anti-twilight arch, a band of reddened, backscattered sunlight also known as the Belt of Venus. The interplay of solstice dates and lunar months does make this solstice and Full Moon a rare match-up. The next June solstice and Full Moon will fall on the same calendar date on June 21, 2062.
Tomorrow's picture: pixels in space
< | Archive | Submissions | Search | Calendar | RSS | Education | About APOD | Discuss | >

Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
NASA Official: Phillip Newman Specific rights apply.
NASA Web Privacy Policy and Important Notices
A service of: ASD at NASA / GSFC
& Michigan Tech. U.

Wednesday 22 June 2016

The universe: Learning about the future from the distant past

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Our universe came to life nearly 14 billion years ago in the Big Bang -- a tremendously energetic fireball from which the cosmos has been expanding ever since. Today, space is filled with hundreds of billions of galaxies, including our solar system's own galactic home, the Milky Way. But how exactly did the infant universe develop into its current state, and what does it tell us about our future?
via Science Daily
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NASA scientists discover unexpected mineral on Mars

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Scientists have discovered an unexpected mineral in a rock sample at Gale Crater on Mars, a finding that may alter our understanding of how the planet evolved.
via Science Daily
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X-ray echoes of a shredded star provide close-up of 'killer' black hole

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Billions of years ago in the heart of a distant galaxy, a monster black hole shredded a passing star and emitted X-rays. Now astronomers are using X-ray echoes to study a newly awakened black hole for the first time.
via Science Daily
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Measure greenhouse gases from space

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Space agencies examine the extent of greenhouse gases in the air via prisms and gratings in satellites. New technology now makes it possible to connect both components with each other so that they are suitable for space thus achieving a new level of quality for spectral resolution.
via Science Daily
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