Saturday 8 August 2015

No, scientists aren’t predicting 10ft higher sea level by 2050

Science Focus

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You may have seen the headlines last week: “Former Top NASA Scientist Predicts Catastrophic Rise In Sea Levels,” “Earth’s Most Famous Climate Scientist Issues Bombshell Sea Level Warning,” “Climate Seer James Hansen Issues His Direst Forecast Yet." Facebook even told me it was trending. The problem is, all those headlines describe a study, and that study doesn’t predict anything. It certainly doesn’t predict 10 feet of sea level rise by 2100 (or even 2050) as a number of stories have claimed.

So what happened here? A few things. The circumstances surrounding the paper are unusual. First, the paper has not yet been peer-reviewed. (Many stories did make that clear.) It is currently undergoing a transparent review process for the journal Atmospheric Chemistry and Physics. Rather than the traditional, behind-closed-doors review where nothing is revealed until the final paper is accepted and published, the journal posts manuscripts immediately as “discussion papers.” As peer reviews are submitted, those will also be posted, as will the authors’ responses and their revisions.

Atmospheric Chemistry and Physics isn’t the only journal doing this, but these papers aren’t normally publicized until the process runs its course. In this case, a press release initiated by the authors went out immediately. In fact, due to a delay getting the manuscript proofread and posted, news stories began running several days before the manuscript was available on the journal’s website. Only those journalists to whom a draft had been circulated knew what was in it.

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#science 
 » see original post http://feeds.arstechnica.com/~r/arstechnica/science/~3/K2FcUjeEfuU/
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Physicists discover long-sought ‘pentaquark’ particle

Science Focus

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CERN’s Large Hadron Collider announced Tuesday that researchers discovered a remarkable class of particles known as pentaquarks that

The post Physicists discover long-sought ‘pentaquark’ particle has been published on Technology Org.

 
#physics 
 » see original post http://feedproxy.google.com/~r/TechnologyOrgPhysicsNews/~3/nzk6hwomi_k/
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VIDEO: Controversial DNA test comes to UK

Science Focus

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A personal DNA test that has sparked controversy in the US launches in the UK. 
#science 
 » see original post http://www.bbc.co.uk/news/health-30304989#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa
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Monogram, Star Cluster Pismis 24, core of NGC 6357 Classic Round Sticker

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Galaxies, Stars and Nebulae series The star cluster Pismis 24 lies in the core of the large emission nebula NGC 6357 that extends one degree on the sky in the direction of the Scorpius constellation. Part of the nebula is ionised by the youngest (bluest) heavy stars in Pismis 24. The intense ultraviolet radiation from the blazing stars heats the gas surrounding the cluster and creates a bubble in NGC 6357. The presence of these surrounding gas clouds makes probing into the region even harder. One of the top candidates for the title of "Milky Way stellar heavyweight champion" was, until now, Pismis 24-1, a bright young star that lies in the core of the small open star cluster Pismis 24 (the bright stars in the Hubble image) about 8,000 light-years away from Earth. Pismis 24-1 was thought to have an incredibly large mass of 200 to 300 solar masses. New NASA/ESA Hubble measurements of the star, have, however, resolved Pismis 24-1 into two separate stars, and, in doing so, have "halved" its mass to around 100 solar masses.

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Image credit: NASA/ESA Hubble

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Curiosity's View

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By planet Earth's calendar, the Curiosity Mars Rover reached its 3rd anniversary on the surface of the Red Planet on August 6. To celebrate, gaze across this dramatic panoramic view of diverse terrain typical of the rover's journey to the layered slopes of Aeolis Mons, also known as Mount Sharp. Recorded with Curiosity's Mast Camera instrument, the scene looks south across gravel, sand ripples, and boulders toward rounded buttes. In the background, higher layers at left are toward the southeast, with southwest at panorama right. The individual images composing the view were taken on Curiosity's mission sols (martian days) 952 and 953 since the rover's landing on August 6, 2012.

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Tarantula Nebula (30 Doradus) Room Graphic

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"This huge Hubble Space Telescope mosaic, spanning a width of 600 light-years, shows a star factory of more the 800,000 stars being born. The stars are embedded inside the Tarantula Nebula, a vibrant region of star birth that resides 170,000 light-years away in the Large Magellanic Cloud, a small, satellite galaxy of our Milky Way."

(qtd. from HubbleSite.org NewsCenter release STScI-2014-02)

Credit: NASA, ESA, and E. Sabbi (STScI)

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Hubble Interacting Galaxy UGC 9618 Cover For iPad Air

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Cassiopeia Constellation Poster

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Cassiopeia is a constellation in the northern sky named after the vain queen Cassiopeia in Greek mythology. She was in the story Clash of the Titans and was the mother of Andromada. Because the constellation Cassiopeia lies in rich Milky Way star fields, it contains many deep sky objects, including open clusters and nebulae. This is the reason why it looks so stunning when photographed. Image curtesy of Nasa.

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Eye - Stellar Nursery R136 on nebula background Square Sticker

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Galaxies, Stars and Nebulae series On a background of the Pelican and North American nebulae, an eye made from hundreds of brilliant blue stars wreathed by warm, glowing clouds appear in this the most detailed view of the largest stellar nursery in our local galactic neighborhood. The massive, young stellar grouping, called R136, is only a few million years old and resides in the 30 Doradus (or Tarantula) Nebula, a turbulent star-birth region in the Large Magellanic Cloud (LMC), a satellite galaxy of our Milky Way.
There is no known star-forming region in our galaxy as large or as prolific as 30 Doradus. Many of the diamond-like icy blue stars are among the most massive stars known. Several of them are over 100 times more massive than our Sun. These hefty stars are destined to pop off, like a string of firecrackers, as supernovas in a few million years. The image, taken in ultraviolet, visible, and red light by Hubble's Wide Field Camera 3, spans about 100 light-years.
The movement of the LMC around the Milky Way may have triggered the massive cluster's formation in several ways. The gravitational tug of the Milky Way and the companion Small Magellanic Cloud may have compressed gas in the LMC. Also, the pressure resulting from the LMC plowing through the Milky Way's halo may have compressed gas in the satellite. The cluster is a rare, nearby example of the many super star clusters that formed in the distant, early universe, when star birth and galaxy interactions were more frequent.
The LMC is located 170,000 light-years away and is a member of the Local Group of Galaxies, which also includes the Milky Way. The Hubble observations were taken Oct. 20-27, 2009. The blue color is light from the hottest, most massive stars; the green from the glow of oxygen; and the red from fluorescing hydrogen.

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image credit: Hubble's Wide Field Camera 3

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Orion Nebula Electric Guitar Wall Skin

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Space image of the Orion Nebula on the shape of an electric guitar.

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Hubble Interacting Galaxy IRAS 21101 iPad Folio Cover

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