Articles

Larry Crumpler

Opportunity arrived at the base of the next segment of the Endeavour crater rim and is now investigating the contact.

Bruce Betts

Using a Shoemaker NEO Grant a new telescope is operating in Illinois to do asteroid tracking.

Emily Lakdawalla

The world's great telescopes capture stunning photographs of stars, nebulae, and other sky phenomena. In Europe to the Stars, authors Govert Schilling and Lars Lindberg Christensen share many such photos. But the real stars of this book are the great telescopes of the European Southern Observatory.

Emily Lakdawalla

In which the fifth graders of Kipp Heartwood Academy argue the competing sides in the is-Pluto-a-planet debate through the medium of rap.

Emily Lakdawalla

Yesterday, the Curiosity mission released the video whose potential I got so excited about a couple of weeks ago: the view, from Curiosity, of Phobos transiting Deimos in the Martian sky. In this post, Mark Lemmon answers a bunch of my questions about why they photograph Phobos and Deimos from rovers.

Casey Dreier

Planetary exploration sees strong support from both parties in the current budget process, but we have a long way to go before a budget is passed this year.

Emily Lakdawalla

A lovely view of the ringed planet and its hazy moon seen from nearly behind them just a few days ago.

Jason Davis

Sierra Nevada Corporation's Dream Chaser spacecraft recently completed a series of range and taxi tow tests, which pave the way for free flights that could begin this fall.

Emily Lakdawalla

Yesterday I enjoyed my second-ever opportunity to suit up and enter the clean room of the Spacecraft Assembly Facility at the Jet Propulsion Laboratory. On display were SMAP, an Earth orbiting radar mission, and ISS-RapidScat, which will perform a different radar experiment from the Space Station.

Jason Davis

A pretty picture of the Perseid meteor shower from Mount Lemmon, Ariz.

Karl Battams

For several weeks now, ground-based observers have been blind to Comet ISON as our local star was sitting directly between us and the comet. I am delighted to share two pieces of good news: first, that ISON is still alive and well, and secondly that it has been recovered.

Mat Kaplan

This week's Planetary Radio talks with the head of the NASA Innovative Advanced Concepts Program about its mission and 12 newly-funded projects that could change the world.

Bill Dunford

New images from Mars.

Emily Lakdawalla

The Planetary Society and Cosmoquest have teamed up to offer a short course in space image processing, and I'll be teaching! The course comprises four one-hour sessions from October 14 to 23.

Daniel Fischer

Space blogger Daniel Fischer provides a preview of the exciting interplanetary observing campaign that has recently begun to study comet C/2012 S1 (ISON) from vantage points across the solar system.

Jason Davis

Professional astrophotographer Adam Block created a video showing the expansion of M1, the Crab Nebula, using two images taken more than a decade apart.

Emily Lakdawalla

A shameless plug for my article on

Vitaliy Egorov

Six months ago, I wrote about the Russian weather satellite Elektro-L, which has more than two years of successful experience in the geostationary orbit. Then I promised that I would be here to share the materials that we collected. I think it's time to deliver on the promise.

Emily Lakdawalla

Yesterday was the first anniversary of Curiosity's landing on Mars, and there was much rejoicing. It's been fun to look back at that exciting day, and it's been an opportunity to reflect on what Curiosity has accomplished in her first year. What science do we have to show for it?

Armin Kleinboehl

Observations made by the Mars Climate Sounder, an instrument aboard NASA’s Mars Reconnaissance Orbiter, have revealed new information about atmospheric tides on the Red Planet.