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This Elevation Map Of Mars Makes The Red Planet Much More Colorful

In this brand new map of the Ares Vallis region of Mars, released by the German space agency DLR, you can see the true differences in height between the high and low parts of our neighboring planet. The highest parts, expressed in red, are about 4000 meters (2.4 miles) above the lowest parts, in blue. » 4/14/15 6:30pm 4/14/15 6:30pm

How It Would Look If Other Types Of Stars Were Close As The Sun

What would it look like if other stars were as close as the sun? For starters, we may have more than one, and it may be either much bigger or smaller than our current orbital star, as shown in these videos, which explore a hypothetical universe where our sun has been replaced with other stars and our moon with planets. » 1/29/15 9:20am 1/29/15 9:20am