Lenses made of graphene and precisely pierced gold sheets are able to concentrate terahertz beams to a spot, flip its polarization and modulate its intensity.
via Science Daily
Monday, 27 November 2017
Ultrathin and flat graphene metalenses gain morace properties
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Lenses made of graphene and precisely pierced gold sheets are able to concentrate terahertz beams to a spot, flip its polarization and modulate its intensity.
via Science Daily
Lenses made of graphene and precisely pierced gold sheets are able to concentrate terahertz beams to a spot, flip its polarization and modulate its intensity.
via Science Daily
First proper motions measured of stars in a small galaxy outside the Milky Way
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By combining data from the Hubble Space Telescope and the Gaia mission, astronomers have been able to measure the proper motion of 15 stars in the Sculptor Galaxy, the first such measurement outside the Milky Way. Analysis shows an unexpected preference in the direction of movement, which suggests that the standard theoretical models used to describe the motion of stars and dark matter halos in other galaxies might be invalid.
via Science Daily
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By combining data from the Hubble Space Telescope and the Gaia mission, astronomers have been able to measure the proper motion of 15 stars in the Sculptor Galaxy, the first such measurement outside the Milky Way. Analysis shows an unexpected preference in the direction of movement, which suggests that the standard theoretical models used to describe the motion of stars and dark matter halos in other galaxies might be invalid.
via Science Daily
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All missions on board for NASA heliophysics research
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Scientists have been studying the near-Earth environment for the better part of a century, but many mysteries -- like where the energetic particles that pervade the area originate and become energized -- still remain. In a new type of collaborative study, scientists combined data from 16 separate NASA and Los Alamos National Laboratory spacecraft to understand how a particle phenomenon in the magnetic environment around Earth occurs. These events, called substorms, can cause auroras, disrupt GPS communications and, at their most intense, damage power grids.
via Science Daily
Zazzle Space Exploration market place
Scientists have been studying the near-Earth environment for the better part of a century, but many mysteries -- like where the energetic particles that pervade the area originate and become energized -- still remain. In a new type of collaborative study, scientists combined data from 16 separate NASA and Los Alamos National Laboratory spacecraft to understand how a particle phenomenon in the magnetic environment around Earth occurs. These events, called substorms, can cause auroras, disrupt GPS communications and, at their most intense, damage power grids.
via Science Daily
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Earthworms can reproduce in Mars soil simulant
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Two young worms are the first offspring in a Mars soil experiment. A biologist found them in a Mars soil simulant that he obtained from NASA. At the start he only added adult worms. The experiments are crucial in the study that aims to determine whether people can keep themselves alive at the red planet by growing their own crops on Mars soils.
via Science Daily
Zazzle Space Exploration market place
Two young worms are the first offspring in a Mars soil experiment. A biologist found them in a Mars soil simulant that he obtained from NASA. At the start he only added adult worms. The experiments are crucial in the study that aims to determine whether people can keep themselves alive at the red planet by growing their own crops on Mars soils.
via Science Daily
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Cosmic Chamaeleon
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Space Science Image of the Week: Delve into the depths of a star-forming cloud observed by the Herschel space observatory
via ESA Space Science
http://www.esa.int/ESA_Multimedia/Images/2017/11/Star_formation_in_the_Chamaeleon
Space Science Image of the Week: Delve into the depths of a star-forming cloud observed by the Herschel space observatory
via ESA Space Science
http://www.esa.int/ESA_Multimedia/Images/2017/11/Star_formation_in_the_Chamaeleon
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