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Magnitude and elongation relationships 22 Feb 2013 | 12:29 pm
Can someone point at sources for the relationship between elongation and magnitude, for low elongations (under 50 degrees) for Moon, Venus and Mercury? Specifically, sources using matching terms, so ...
Asteroid cities? 22 Feb 2013 | 11:14 am
I remember reading this novel about asteroid miners and places like Ceres city. Has NASA discussed bringing a suitable asteroid into earth orbit and using it as a base or elevator ballast. Seems to me...
Nova or Supernova Question 22 Feb 2013 | 08:38 am
One of my kids was watching "How the Universe Works" and stumped me with a question. Are all nova or supernova the exact same strength when they explode? My son is 8 and wasn't exactly clear as to wh...
Could an alien tell that we are here? 22 Feb 2013 | 07:57 am
Hi. My question is, if there was an alien species with technology identical to ours, how close to us would they have to be to know that we are here? For example, if this species was on a planet orbit...
Historic Mars Rock Drilling Sample Set for Analysis by Curiosity Robot in Search of O 22 Feb 2013 | 07:20 am
Newly received images from the surface of Mars confirm that NASA’s Curiosity rover successfully extracted the 1st ever samples collected by drilling down inside a rock on another planet and transferre...
New PC game: Star Citizen 22 Feb 2013 | 06:24 am
By the designer (who took a 10 year hiatis from industry) of titles like WingCommander, Dungeon Siege, StarLancer, FreeLancer. A space based game that will push PC gaming to the edges of the tehcnolo...
Scientist Who Studied Famous Martian Meteorite Passes Away 22 Feb 2013 | 05:00 am
NASA scientist, Dr. David S. McKay has passed away. He may be best known for his paper about a Martian meteorite, ALH84001, which presented an argument that it contained evidence for life on Mars. McK...
Ngc 3521 22 Feb 2013 | 04:27 am
NGC 3521 is a very disturbed flocculent spiral galaxy in Leo about 35 million light-years distant. Redshift can be rather misleading giving a distance of 54 million light-years. NED gives it a classif...
Astrophoto: Giant Sunspot Group on the Sun 22 Feb 2013 | 03:30 am
On February 19 and 20, 2013, scientists watched a giant sunspot form in under 48 hours. It has grown to over six Earth diameters. This image by astrophotographer Paul Andrew shows a detailed, close-up...
Milky Way Leftover Shell Stars Discovered In Galactic Halo 22 Feb 2013 | 02:20 am
Like tantalizing tidbits stored in the vast recesses of one’s refrigerator, astronomers using NASA’s Hubble Space Telescope have evidence of a shell of stars left over from one of the Milky Way’s meal...
