Articles

Matthew Chojnacki

HiRISE team member Matt Chojnacki tells us about the discovery and formation of these mysterious features forming on Mars in the present day.

Larry Crumpler

Opportunity is closing in on the next important outcrop area on the rim of Endeavour crater.

Bill Dunford

One day, five worlds.

Emily Lakdawalla

Updates on upcoming appearances in southern California at Spacefest tomorrow, and the International Space Development Conference next week.

Emily Lakdawalla

Rosetta is in the final stage of its approach to comet 67P Churyumov-Gerasimenko. Yesterday, the spacecraft successfully performed the first of ten burns it needs to match velocity with the comet.

Amir Alexander

Amir Alexander's new book about an epic battle over a mathematical concept that shook the old order and shaped the world as we know it.

Mat Kaplan

Watch another universe unfold as simulated by Illustris, using a model that required 8,000 processors running in parallels 3 months to create!

Casey Dreier

The House revealed details of its draft NASA budget today, including an increase of $170 million to Planetary Science above the White House's request for 2015, putting it within spitting distance of our goal of $1.5 billion.

Simon Porter

New Horizons team member Simon Porter reports on the state of the mission and Pluto system science from the recent science team meeting at the Applied Physics Laboratory.

Marc Rayman

Less than a year from its rendezvous with dwarf planet Ceres, Dawn is continuing to make excellent progress on its ambitious interplanetary adventure. But once it gets to Ceres, just how will it go into orbit? Marc Rayman explains.

Emily Lakdawalla

A Mars year's worth of Sun images from Opportunity demonstrates Mars' orbital motions as reflected in the changing apparent position of the Sun: the analemma.

Jaime Green

Earth and its solar system compatriots all have nearly circular orbits, but many exoplanets orbit their stars on wildly eccentric paths. Is our home system strange? Or is our sense of the data skewed?

Casey Dreier

Budget season is in full swing in Washington, D.C., and we're starting to see indications of how NASA will fare this year. I have to say, things are looking pretty promising.

A.J.S. Rayl

The Mars Exploration Rovers mission cruised toward the Martian spring, Opportunity is powered-up and cleaner than it has been since its first winter on Mars.

Bruce Betts

There are swirly indications from a study of how to optimize the lander pad portion of the Planetary Society/Honeybee Robotics PlanetVac planetary surface sampling system.

Emily Lakdawalla

Curiosity took a new self-portrait on sol 613. This post contains a tip for would-be Curiosity image processors on how to make their Curiosity mosaics better: removing the smearing effect of bright objects in MAHLI photos.

Jim Bell

Dr. Jim Bell, a planetary scientist and President of the Planetary Society, calls on his colleagues to write Congress in support of planetary exploration and to support The Society.

Emily Lakdawalla

We don't currently know whether Pluto is the biggest thing in the Kuiper belt or not. When will New Horizons give us the answer?

Emily Lakdawalla

An attempt to corral the discussion of the IAU planet definition in one place on planetary.org, so that we may be free to actually discuss Kuiper belt observations and scientific results on posts elsewhere on this site.

Val Klavans

The Cassini mission has already returned an array of images of other solar system members from Saturn orbit: Earth (and the Moon), Venus, Mars, and Jupiter. It’s time to add another world to that list!