Articles

Emily Lakdawalla

Rosetta has turned on its cameras and sighted its comet for the first time since waking from hibernation. Next activity: waking the Philae lander.

Emily Lakdawalla

On Wednesday, March 26, two important discoveries in the outer solar system were announced: the discovery of the second confirmed member of the Inner Oort Cloud (2012 VP113) and the discovery of rings around the planetesimal Chariklo. In a Hangout on Air, a rag-tag group of planetary scientists and astronomers active on Twitter talked about the discoveries.

Alex Parker

Yesterday, a team of astronomers announced that they discovered a set of planet-like rings around Chariklo, an asteroid-like body that currently resides in the unstable region between the orbits of Saturn and Uranus.

Casey Dreier

An animated NASA Administrator defended the commercial crew program as the fastest way to return to American access to low-Earth orbit in a hearing before the House Space Subcommittee today.

Casey Dreier

Now that the White House has released its 2015 NASA budget proposal, what happens next? What can you do to help?

Emily Lakdawalla

2012 VP113 is a new world that has been discovered on a Sedna-like orbit. What does that mean? It could imply the existence of a planet X, but doesn't prove it. It does suggest that a lot more Sednas are waiting to be discovered.

Emily Lakdawalla

Vignettes from dozens of LPSC talks: GRAIL and LADEE at the Moon; ice and craters and conglomerates and organics and gullies on Mars; polar deposits and volatile elements on Mercury; tectonics on Enceladus; and more, until my brain was so full I could barely speak.

Katherine Mack

Katie Mack explains why the BICEP2 detection of primordial gravitational waves has left astrophysicists at a loss for words.

ESA Mars Express Team

In the latest update on how the Mars Express flight control team is planning to deal with Comet Siding Spring is all about attitude -- and hiding behind the biggest guy in the fight.

Bill Dunford

Cassini images in motion.

Van Kane

The President’s proposed Fiscal Year 2015 budget details were released last week. For the next several years, the budget proposes a steady as she goes plan, but with two “what are they thinking?” surprises.

Bruce Betts

A 0.81m telescope in northern Italy is well on its way to being wide eyed and shiny thanks to a 2013 Planetary Society Shoemaker NEO Grant, which will enable it to make better near Earth object observations to help protect our planet from asteroid impact.

Emily Lakdawalla

At the Lunar and Planetary Science Conference, Jennifer Scully discussed possible water-carved gullies in an unusual location: within craters on Vesta. Water-carved gullies on Mars I can accept; but on an airless lumpy body? I was intrigued.

Kirby Runyon

Calling your senators and representatives about NASA's budget isn't that bad. In fact, I just took 15 minutes out of my day to do it! If you're not sure what to say to support planetary exploration, I hope you'll be inspired by what I've transcribed from my phone call this afternoon.

Emily Lakdawalla

Since the last time I reported on ICE/ISEE-3, there have been several developments. Its signal has been detected by several Earth-based observers, and there is now some (though slight) hope of reestablishing command over the spacecraft.

Casey Dreier

I gave a talk at the Lunar and Planetary Science Conference this year where I summarized the planetary budget situation. Here is that talk.

Emily Lakdawalla

Simon Kattenhorn and Louise Prockter may finally have found subduction zones on Europa, which would it the only other place in the solar system besides Earth that is known to have active plate tectonics.

Bill Dunford

Get an astronaut's view into several lunar craters.

Emily Lakdawalla

With a series of drives over the last week, Curiosity is now approaching her next science stop at Kimberley. The distinctive knobs of the Kimberley outcrop are visible in photos taken on sol 569.

Emily Lakdawalla

Since Seth MacFarlane tweeted that this weekend's episode of Cosmos was going to include a segment on lakes on Titan, I thought I'd write a post explaining the basics of Titan lakes.