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Five close-approach images of Hartley 2 by Deep Impact, with commentary

Emily Lakdawalla • November 04, 2010

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!

Close approach images of Hartley 2!

Emily Lakdawalla • November 04, 2010

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!

Pretty picture: Three moons of Saturn

Emily Lakdawalla • October 29, 2010

The Cassini Raw Images Website always offers rewards to the browser. This evening I found the raw images necessary to create this color composite, showing the hazy orange moon Titan, the mid-sized icy moon Dione, and the tiny rock Prometheus all at the same time.

An update to the Cassini Tour Page

Emily Lakdawalla • October 27, 2010

Where's the Cassini Saturn orbiter going to be in the next week -- or hundred weeks? It's all already planned out.

DPS 2010: Pluto and Charon opposition surges, Nix and Hydra masses, Pluto and Eris compositions

Emily Lakdawalla • October 25, 2010

An awful lot of the talks in the Pluto session on Tuesday morning, October 5, at the Division of Planetary Sciences meeting spent more time focusing on how bad weather conditions were during the astronomers' attempts to view Pluto as it occulted background stars than they did on any measurements or science that came out from the data.

The Voyager Mission Updates

Emily Lakdawalla • September 14, 2010

We take for granted now the ability to get detailed mission updates in a timely fashion via the Web. But How did people get their mission status before the Web?

Neptune from two slightly different perspectives

Emily Lakdawalla • September 06, 2010

Coincidentally, two new images of Neptune were posted today, from two very different sources.

How to Recognize Titan from Quite a Long Way Away

Emily Lakdawalla • August 09, 2010

You know, I could fill this blog almost entirely with the amazing images that Gordan Ugarkovic locates, processes into prettiness, and uploads to his Flickr account.

The enigmatic mounds of Acidalia Planitia

Emily Lakdawalla • August 04, 2010

Acidalia Planitia is a large basin in Mars' northern lowlands, a dark splotch visible even from Earth telescopes.

Goodies from the latest Cassini data release

Emily Lakdawalla • August 02, 2010

I've spent a pleasurable hour or so browsing over the latest release of images from Cassini to the Planetary Data System.

Voyager at Saturn, one year later

Emily Lakdawalla • July 27, 2010

Here are two newly processed portraits of Saturn, showing the planet just after its equinox.

Watching the birth and death of moonlets in Saturn's F ring

Emily Lakdawalla • July 22, 2010

The Saturn system is always in motion, always changing. Saturn itself is a gas giant, with swirling storms, and like the other gas giants it has a host of moons flying around, perturbing each other's motions. And then there's the rings.

Color portrait of asteroid 21 Lutetia

Emily Lakdawalla • July 21, 2010

Since it doesn't look like the Rosetta mission is going to be releasing any color versions of their Lutetia close-encounter images any time soon, I figured it was time to make one.

Volcanism across the solar system: Io

Emily Lakdawalla • July 20, 2010

Three months ago, grandiosely, I announced that I was going to survey volcanism across the solar system, and I began the journey on Earth. Then I failed to follow up.

Cassini eyes Janus

Emily Lakdawalla • July 13, 2010

Four times a year, the Cassini mission releases three months' worth of data gathered from Saturn and its moons to NASA's Planetary Data System.

Rosetta's Lutetia pictures

Emily Lakdawalla • July 11, 2010

I saw these pictures for the first time just 10 minutes before boarding my flight back home, and forced myself to download everything I could find as quickly as possible without pausing to actually look at them.

Lutetia -- and Saturn!!

Emily Lakdawalla • July 10, 2010

A quick post of just one of the gorgeous images from Rosetta's flyby of Lutetia today; for more, see the Rosetta Blog. But this one was just too pretty to wait for.

Rosetta Lutetia flyby successful; approach images posted; high-res images yet to come

Emily Lakdawalla • July 10, 2010

All appears to be going very smoothly on Rosetta through, and after, its flyby today of asteroid (21) Lutetia.

Hubble turns 20

Emily Lakdawalla • April 23, 2010

Tomorrow is the 20th anniversary of the launch of the Hubble Space Telescope. It's hard to believe it's been going strong for so many years.

A feast of pretty pictures from Cassini

Emily Lakdawalla • April 12, 2010

Cassini has it almost too easy. Point at anything in the Saturn system and you're guaranteed of a shot that looks, at least, pretty.

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