Articles

Emily Lakdawalla

Time to open the thirty-first (and next-to-last) door in the advent calendar. Where in the solar system are these dark-rimmed craters?

Emily Lakdawalla

SOHO was launched more than 15 years ago to study the Sun, primarily; but a side benefit of its constant observation of the Sun has been its ability to notice

Emily Lakdawalla

Today the 365 Days of Astronomy podcast aired my contribution, Small Worlds, about the smaller denizens of the solar system visited in the past year, and due to be visited in the next.

Emily Lakdawalla

Today the Deep Impact/EPOXI science team held a press briefing that followed up on their very successful flyby of two weeks ago, a status report on what they can say so far about the science that's coming out of the encounter.

Emily Lakdawalla

Just in time for today's Deep Impact press briefing, which you can watch on NASA TV in a few minutes: I've updated my montage of all the asteroids and comets that have been visited and photographed to include Hartley 2.

Emily Lakdawalla

On Thursday, November 4, at 13:50 UTC, Deep Impact flew within 700 kilometers of comet Hartley 2. Hartley 2 is the smallest and most active of the five comets that have been directly by a spacecraft, and the first to be visited within the lifetime of its discoverer.

Emily Lakdawalla

I had to catch up with tasks left undone at home today and didn't have time to write up my notes from the Hartley 2 press briefing, for which I apologize. I'll leave you for the weekend with three cool Hartley 2 pictures.

Emily Lakdawalla

What a dramatic and cool photo! An asteroid with two lobes like Borrelly, lumpy and bouldery like Itokawa, with gorgeous active jets, dramatically lit. Well done, Deep Impact team!

Emily Lakdawalla

Here's the five close-approach images of Hartley 2 captured today, November 4, 2010, by the Deep Impact spacecraft, collected into one file. Boy, do these images reward close examination!

Emily Lakdawalla

Those of you who follow my blog must have known this was coming: now that I got all five new Deep Impact images of Comet Hartley 2 posted and explained, I had to make an animation. Here they are.

Emily Lakdawalla

It was a very happy set of scientists, engineers, managers, and administrators who filled the Jet Propulsion Laboratory's Von Karman auditorium this afternoon to do the postgame show on Deep Impact's flyby of Hartley 2.

Emily Lakdawalla

Since comet Hartley 2 -- the target of Deep Impact's November 4 flyby -- is near its perihelion, it's no surprise that it's an active comet with lots of outbursts.

Emily Lakdawalla

The week is finally here: Deep Impact flies past Hartley 2, the smallest comet yet to be visited by a spacecraft, on Thursday, November 4 at 13:50 UTC.

Emily Lakdawalla

Comet Hartley 2, the target for Deep Impact's close flyby (now just six days away!) made its closest approach to Earth on October 20, at a distance of 17.7 million kilometers.

Emily Lakdawalla

Today was the press briefing that previewed the upcoming Deep Impact flyby of Hartley 2.

Emily Lakdawalla

The Deep Impact spacecraft team has released a third image from their approach to comet Hartley 2, and for me, three images is an invitation to make an animation!

Emily Lakdawalla

Deep Impact is rapidly approaching its next -- and final -- target, comet Hartley 2, which it will fly by on November 4.

Emily Lakdawalla

It never ceases to amaze me how much science is being wrung out of the few grams of material that were returned to Earth by the Stardust mission.

Emily Lakdawalla

I wrote some time ago about the expectations for the Wide-field Infrared Survey Explorer (WISE)'s contributions to solar system science. A couple of days ago, JPL posted an image and movie documenting the progress to date.

Emily Lakdawalla

Today the Wide-field Survey Explorer (WISE) team released a small album of beautiful astrophotos.