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Local Neighborhood of Stars
The local solar neighborhood is the region of space surrounding the Sun out to a distance of about 100 parsecs (about 300 light years). This volume of space contains roughly a million stars (out of the hundred billion or so in the Milky Way Galaxy). The nearest stars are Proxima Centauri (4.2 light-years), Alpha Centauri A and B (4.3 light-years) to which Proxima may or may not be physically bound, and Barnard's star (6.0 light-years). The brightest star in the sky, Sirius, lies at a distance of 8.6 light-years.
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Curiosity Rover
Last Updated on 2012-08-06 at 16:47
The Curiosity Rover is designed to examine Martian rocks and soils. Two instruments on its arm can study rocks up close, a drill can collect sample material and a scoop can... More »
Solar radiation
Last Updated on 2012-05-24 at 16:12
Almost all of the energy that drives the various systems (climate systems, ecosystems, hydrologic systems, etc.) found on the Earth originates from the sun... More »
Solar System
Last Updated on 2011-10-04 at 15:53
Stars often have a number of objects orbiting around them in an adjacent region of space known as a solar system. Our solar system formed about five billion years ago and... More »
What caused a giant arrow-shaped cloud on Saturn's...
Last Updated on 2011-08-16 at 17:30
UCLA, (Aug. 15, 2011) – Why does Titan, Saturn's largest moon, have what looks like an enormous white arrow about the size of Texas on its surface?
A research group led... More »
Planet Mars
Last Updated on 2010-12-12 at 21:53
Atmosphere, Conditions, and discovering the history and general info on the red planet. More »
Chaos in high order mean motion resonances
Last Updated on 2010-10-31 at 12:23
This paper argues, via numerical examples, that the short Lyapunov times, shown by certain minor planets in the outer asteroid belt, can probably be traced to the... More »
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