Rameshwar singh

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Moon shots: the far-out space suits of past, present, and future

WIRED Space Photo of the Day for March 2014

Author: Adam Mann<p>06:30 am<p>Follow Space Photo of the Day on TwitterThe 2013 WIRED Space Photo of the Day GalleryThe 2012 WIRED Space Photo of the Day …

Ask Anything: Why Is The Milky Way A Spiral?

The galaxy getdown<p>The shape of our galaxy is nothing special. Among the other clusters of stars that can be easily observed from our corner of the universe, a few are blobby and egg-shaped, but more than two-thirds are so-called “disc galaxies,” or ones whose stars have settled into flat orbits, as …

Alphard is the Snake’s Heart

Alphard – Heart of the Snake in constellation Hydra – is ascending in the east in the evening now, a sign of spring coming.<p>In skylore, the star …

Astronomy

Plasma Plume Keeps Earth Safe From Solar Storms

Thanks, buddy!<p>Earth has a magnetic field, which begins at the core and stretches far out into space. Typically, this magnetic field is a useful shield for solar activity. However, if the Earth's magnetic field bumps up against the sun's magnetic field, all types of madness can ensue, including …

APOD: A Hole in Mars (2014 Mar 09) Image Credit: NASA, JPL, U. Arizona http://apod.nasa.gov/apod/ap140309.html Explanation: What created this unusual hole in Mars? The hole was discovered by chance in 2011 on images of the dusty slopes of Mars' Pavonis Mons volcano taken by the HiRISE instrument aboard the robotic Mars Reconnaissance Orbiter currently circling Mars. The hole appears to be an opening to an underground cavern, partly illuminated on the image right. Analysis of this and follow-up images revealed the opening to be about 35 meters across, while the interior shadow angle indicates that the underlying cavern is roughly 20 meters deep. Why there is a circular crater surrounding this hole remains a topic of speculation, as is the full extent of the underlying cavern. Holes such as this are of particular interest because their interior caves are relatively protected from the harsh surface of Mars, making them relatively good candidates to contain Martian life. These pits are therefore prime targets for possible future spacecraft, robots, and even human interplanetary explorers. http://mars.jpl.nasa.gov/mro/ http://hirise.lpl.arizona.edu/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140309 #APOD