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Our journalists and guest bloggers bring you stunning imagery and the space stories that matter most.

What is NASA for?

Craig Hardgrove • February 12, 2014 • 3

Planetary scientist Craig Hardgrove takes a look at what NASA really does for humanity.

Cosmos with Cosmos Episode 12: Encyclopedia Galactica

Casey Dreier • February 05, 2014 • 8

Cosmos returns in fine form in its penultimate episode. Sagan explores the historical and scientific precedents for the search for extraterrestrial life (SETI) and our human desires to not be alone in the universe.

Cosmos with Cosmos Episode 11: The Persistence of Memory

Casey Dreier • January 27, 2014 • 7

Cosmos stumbles with an episode that is plodding, scattered, and more than a little preachy. This episode will only persist in my memory as a shadow of what could have been.

Cosmos with Cosmos Episode 10: The Edge of Forever

Casey Dreier • January 21, 2014 • 11

Carl Sagan takes us from the birth to the death of the universe. How do we reconcile our place within a universe that will die? Join us for the latest discussion on episode 10 of Cosmos.

The Last Flight of the Original Space Ranger

Bill Dunford • January 06, 2014 • 11

Remembering the Moon's first extreme close-up.

Planetary Radio: Ten Years A Roving: The Mars Exploration Rovers

Mat Kaplan • December 24, 2013

This week's show looks back over ten years of exploration by Spirit and Opportunity. Writer A.J.S. Rayl recounts the challenges encountered early in the mission, and how an outstanding team triumphed.

The Sorry State of Planetary Science Funding In One Chart

Casey Dreier • December 09, 2013 • 12

If you want to know why Cassini might be terminated early, or why NASA pulled out of its joint Mars mission with Europe, or why the new ASRG power source was put on indefinite hold, this chart has your answer.

Cosmos with Cosmos Episode 7: The Backbone of Night

Casey Dreier • December 03, 2013 • 3

We return to the big idea of the series – that the universe can be known and we better ourselves in our efforts to understand it – in the best episode of Cosmos so far.

The Mariner Mars Globe

Don Davis • November 29, 2013 • 3

In 1971 I was being trained to work with the airbrush by the map artists at the U.S. Geological Survey's Branch of Astrogeologic Studies in Flagstaff. However, the project I ended up spending about a quarter of a man-year on was a hand-painted map globe of Mars.

Cosmos with Cosmos Episode 6: Travellers' Tales

Casey Dreier • November 25, 2013 • 12

The Voyager mission may be the ultimate expression of our desire to explore, but why does that will exist in the first place? Why is it unique to humans?

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