Articles

Marc Rayman

Dawn has completed another wonderfully successful phase of its exploration of Vesta, studying it in unprecedented detail during the past month.

Emily Lakdawalla

The Dawn mission to Vesta continues to release an image every day, and recently they have been releasing lots of color images. I like color pictures for aesthetic reasons, but color is actually a very important property of planetary surfaces.

A.J.S. Rayl

Opportunity roved on this month, driving alongside the rim of Endeavour Crater toward the northern end of Cape York in search of more science gold and a place to hunker down for winter.

Emily Lakdawalla

Well, that was awesome. The NPP Earth observation satellite launched successfully an hour or so ago, and I was with a chilled but thrilled crowd of a few hundred people to watch it at Vandenberg Air Force Base.

Emily Lakdawalla

This evening I'll be headed up to Lompoc, California, to participate in my first Tweetup along with 25 other Tweeters.

Emily Lakdawalla

The Mars Climate Sounder team has recently confirmed a prediction of a weather phenomenon on Mars that we haven't been able to observe before.

Jim Shirley

The Mars Climate Sounder instrument provides routine nightside observations of atmospheric temperature and opacity that document the presence of rapidly evolving water ice cloud layers in the Martian tropics during the northern summer season.

Emily Lakdawalla

I'm nearly two weeks late getting to this news but better late than never, right? There was a press briefing from the Dawn mission at the Geological Society of America (GSA) meeting on October 12.

Emily Lakdawalla

I'm (hopefully) headed to the launch of a Delta II (the last currently scheduled Delta II!) at Vandenberg Air Force Base, as one of only 20 people selected to participate out of more than 600 who registered.

Emily Lakdawalla

Cassini has completed two very close flybys of Enceladus in less than three weeks, one of them just this morning, and the images from that encounter have already arrived on Earth.

Emily Lakdawalla

JAXA's solar sail demonstration craft IKAROS is still puttering along, 17 months after it launched, and its controllers back on Earth keep coming up with new things to try with it. I'm pretty amazed by the most recent trick: reversing its spin direction. This may not sound like a big deal, but it is, especially for IKAROS.

Emily Lakdawalla

I know I just posted about Phobos-Grunt on Friday, but there are lots of new pictures from Baikonur Cosmodrome (Russia's main launch facility in Kazakhstan) showing Phobos-Grunt being removed from its shipping crate and tipped upright in preparation for its launch in early November.

Emily Lakdawalla

It should give you a feeling of déjà vu: a defunct satellite's orbit is decaying, and because that orbit is circular it's going to be impossible to predict where and when along its ground track it's going to happen.

Emily Lakdawalla

Фобос-Грунт is getting ready for launch!

Jason Davis

Data from Earth observing satellites Aura and CALIPSO have shown record losses of seasonal ozone in the Arctic.

Emily Lakdawalla

Last Tuesday at the Division of Planetary Sciences meeting Bruno Sicardy presented the results of his research group's observations of a stellar occultation by Eris.

Emily Lakdawalla

With little fanfare, the Dawn mission continues releasing a new picture from Vesta every day. This one is definitely my favorite among their recent releases, a closeup on one of Vesta's strange streaky bright craters.

Emily Lakdawalla

Kennedy Space Center has recently created a photo album collecting their photos from the clean rooms where technicians are working madly to prepare the Curiosity Mars rover for launch.

Emily Lakdawalla

It's been a week of very heavy science on this blog, so I thought it'd be nice to go into the weekend with a post in which a breathtaking picture speaks for itself, without needing my thousands of words.

Emily Lakdawalla

Today was (is) the last day of the Division of Planetary Sciences / European Planetary Science Congress meeting in Nantes, France.