News tagged with gravitational forces

Laser tripod for better levitation

(Phys.org) —Physicists from The Australian National University have shown that three lasers are better than one when it comes to levitating small but visible objects on light, designing an extremely precise ...

dateOct 30, 2013 in General Physics
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Cosmology in a Petri dish

Scientists have found that micron-size particles which are trapped at fluid interfaces exhibit a collective dynamic that is subject to seemingly unrelated governing laws. These laws show a smooth transitioning ...

dateJan 26, 2012 in General Physics
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A galaxy cluster gets sloshed

(PhysOrg.com) -- Like wine in a glass, vast clouds of hot gas are sloshing back and forth in Abell 2052, a galaxy cluster located about 480 million light years from Earth. X-ray data (blue) from NASA's Chandra ...

dateDec 14, 2011 in Astronomy
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Hubble tells a tale of galactic collisions

(Phys.org) —When we look into the distant cosmos, the great majority of the objects we see are galaxies: immense gatherings of stars, planets, gas, dust, and dark matter, showing up in all kind of shapes. ...

dateMay 13, 2013 in Astronomy
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The spectral energy distribution of protostars

(Phys.org) -- Stars form when gravitational forces coalesce the gas and dust in interstellar clouds until the material forms clumps dense enough to become stars. Precisely how this happens, however, is still ...

dateAug 06, 2012 in Astronomy
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A eulogy to Herschel

(Phys.org)—With its 2160 litres of liquid helium about to run out, the Herschel Space Observatory will, by the end of March, become just another piece of space junk.

dateJan 02, 2013 in Astronomy
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SLoWPoKES

The Sloan Low-mass Wide Pairs of Kinematically Equivalent Stars (SLoWPoKES) catalog was recently announced, containing 1,342 common proper motion pairs (i.e. binaries) – which are all low mass stars in the ...

dateMay 16, 2011 in Astronomy
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Robots, astronauts and asteroids

(PhysOrg.com) -- NASA has its sights set on asteroid exploration, which is just as tricky as it sounds. An asteroid has little gravitational force, which rules out walking on one. Anchoring to the surface ...

dateMay 24, 2011 in Space Exploration
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For the Milky Way, it's snack time

Using the Sloan Digital Sky Survey, researchers have discovered a band, or stream, of stars believed to be the remnant of an ancient star cluster slowly being ingested by the Milky Way, Earth's home galaxy.

dateOct 25, 2012 in Astronomy
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