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Topic: Mars (Planet)
Four potential exploration sites for future Mars probe
Cool Astronomy
Water on Mars? Scientists say gigantic ocean used to cover one-third of Mars.
In Pictures
Space Photos of the Day 06/15
The moon may hold 100 times more water than previously thought
Jupiter's other moon, the volcanic Io, could be a target for life
Scientists attempt to unravel the mysteries of asteroids
Earth and moon may be younger than we think
Photo of alien planet proves they're created quickly
Cool Astronomy
Did Mars once have oceans? New evidence says yes.
Discovery on Saturn's moon fuels speculation of alien life
Need help finding Uranus? For the next few months, it'll be next to Jupiter.
Ancient water on Mars? Rare rocks may hold a clue.
American astronauts have been spacewalking for 45 years
Record 520-day Mars mission simulation in Russia begins
Scientists await return of Japanese asteroid probe
Rare sky show: Saturn, Mars, and Venus appear together this week
Cosmic rendezvous: Mars and Regulus to form striking pair in June
New robot landers will be built by private rocket-makers
10 video games that should be made into movies
NASA's WISE telescope delivers a stunning image of the Heart and Soul nebulae
Liquid water may not be enough for alien life to survive
Crater photos show off dynamic Martian winds
Rare sky show this week: Moon to dance with Mars, Saturn, and Regulus
Life on Mars? NASA wants Martian rocks to find clues
In Pictures
Venus
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