NASA defines a potentially hazardous asteroid as one large enough to survive the intense heat generated by entry into the atmosphere and cause damage on a regional scale or worse. The figure released Wednesday is lower than a previous rough estimate had projected, but more are now thought to be in orbits inclined like Earth's, making them more likely to cross its path. Mainzer said between 20% an
NASA estimates 4,700 'potentially hazardous' asteroids
Posted by mingioni (#1) 7 days ago (http://edition.cnn.com)
NASA - Filigree and Shadow
Posted by hdarryl18 (#1) 58 days ago (http://www.nasa.gov)
Wispy tendrils of hot dust and gas glow brightly in this ultraviolet image of the Cygnus Loop Nebula, taken by NASA’s Galaxy Evolution Explorer. The nebula lies about 1,500 light-years away, and is a supernova remnant, left over from a massive stellar explosion that occurred 5,000-8,000 years ago. The Cygnus Loop extends more than three times the size of the full moon in the night sky, and is tuc
BBC Hindi - विज्ञान - पौने नौ अरब डॉलर की दूरबीन
Posted by Admin (#1) 265 days ago (http://www.bbc.co.uk)
नासा ने कहा है कि साल 2018 में अंतरिक्ष में जाने वाली इसकी प्रस्तावित जेम्स वेब स्पेस टेलिस्कोप की क़ीमत 8.7 अरब अमरीकी डॉलर होगी. यह दूरबीन पांच साल तक काम करेगी.
Asteroid to Make Shut Pass by Earth Today
Posted by momod (#1) 332 days ago (http://internetadauang.blogspot.com)
Freshly discovered asteroid will zip by only seven,500 miles previously mentioned the planet’s surface or roughly the very same distance as Norcross to Afghanistan
NASAs Dawn Spacecraft Is Approaching Asteroid Vesta
Posted by ginoliinin (#1) 379 days ago (http://www.4vf.net)
Schoolchildren by the thousands wept when Pluto was officially banished from the ranks of the major planets back in 2006,
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