Have a close look at some potentially habitable planets.
Interesting animation of how fast rockets have to travel to leave each planet.
There are some huge differences in rotational speed and axis.
Planets come close.
Ever wondered what planets would look like if they were as far away from Earth as the Moon? Well, neither did I, but it looks cool.
Some of those water worlds are much more interesting than Kevin Costner's.
Indeed. Alien life may be lurking right in your cosmic backyard, earthlings (click to enlarge).
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