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July 27, 2011
Scientists are studying rocks in Chile to learn about possible life on Mars

Looking for Life

July 26, 2011
Chile's Atacama Desert is an analog for studying conditions on Mars

Mars on Earth

July 25, 2011
Moon, Mars, and Aldebaran, July 26-28, 2011

Seeing Orange

July 22, 2011
Atlantis lands on July 21, 2011, ending the space shuttle program

That's All, Folks!

July 18, 2011
Dawn's first view of Vesta after entering orbit, July 2011

Settling In

July 15, 2011
Dawn spacecraft view of asteroid Vesta shortly before entering orbit

First Stop

July 13, 2011
Space shuttle Atlantis approaches the International Space Station, July 2011

Final Approach

July 10, 2011
Delta Lyrae and the Summer Triangle

Seeing Double

July 8, 2011
Atlantis launches on the final space shuttle mission, July 8, 2011

Last Call

July 7, 2011
Cassini view of Iapetus, a moon of Saturn

Two-Toned Moon

July 2, 2011
Messenger view of the surface of Mercury, June 2011

Hello, Sunshine

June 30, 2011
Illustration showing the Great Comet of 1861

Great Comet

June 25, 2011
The path of asteroid 2011 MD as it passes Earth, June 2011

Close Call

June 22, 2011
Dust coats the spacesuit of Apollo 17 astronaut Gene Cernan

Dirty Moonwalker

June 20, 2011
Phobos, one of the moons of Mars, passes by the planet Jupiter.

Out of Order

June 15, 2011
Cosmic Inflation

A Big Push

June 11, 2011
NGC 3758, a system of two merging galaxies

Double Trouble

June 7, 2011
A solar eruption on June 7, 2011

Big Splash

June 6, 2011
Venus's path across the Sun during the transit of 1761

Bright Passage

June 3, 2011
Artist's concept of upgraded Hobby-Eberly Telescope

Facelift for Science

June 1, 2011
Stars and cities streak past space shuttle Endeavour

Fast Flyer

May 30, 2011
A painting by Andrew Wyeth depicts preparations for a Gemini launch in the 1960s

Ready for Liftoff

May 26, 2011
X-ray view of the Carina Nebula, a stellar nursery 7,500 light-years from Earth

Star Factory

May 23, 2011
Alpha Magnetic Spectrometer-2 attached to the International Space Station

On Duty

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