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Emily's Blog

Snapshots from Space

by Emily Lakdawalla

Follow the thrilling adventures of planetary missions, past and present, and see the stunningly beautiful photos that they return from space!

Emily Lakdawalla

Latest Blog Posts:

Planetary Geomorphology Image of the Month: Water tracks on Earth and Mars

Posted by Emily Lakdawalla on 2013/07/18 09:57 CDT | 3 comments

The International Association of Geomorphologists' "planetary geomorphology image of the month," contributed by Joe Levy, features water tracks on Earth and compares them to recurring slope lineae on Mars.

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A new HiRISE view of Opportunity (sol 3361)

Posted by Emily Lakdawalla on 2013/07/17 06:14 CDT

The HiRISE camera on Mars Reconnaissance Orbiter has snapped a lovely color photo of the rim of Endeavour crater, catching Opportunity midway between Nobby's Head and Solander Point.

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New names for Pluto's little moons Kerberos and Styx; and a new moon for Neptune

Posted by Emily Lakdawalla on 2013/07/15 01:37 CDT | 4 comments

Pluto's moons, formerly known as "P4" and "P5," are now named Kerberos and Styx; I thought I'd help place them into context with a little help from Cassini. Also, Neptune now has a 14th known moon.

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A rare clear day in Alaska

Posted by Emily Lakdawalla on 2013/07/12 06:00 CDT | 3 comments

NASA recently shared a gloriously detailed image of an unusual clear day in Alaska as seen from the Terra satellite.

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Scale comparisons of the solar system's major moons

Posted by Emily Lakdawalla on 2013/07/10 06:05 CDT | 12 comments

A few presentation slides with pretty pictures, sized to scale, of the large moons of the solar system.

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Stationkeeping in Mars orbit

Posted by Emily Lakdawalla on 2013/06/27 10:55 CDT | 10 comments

It had never occurred to me to think about geostationary satellites in Mars orbit before reading a new paper by Juan Silva and Pilar Romero. The paper shows that it takes a lot more work to maintain a stationary orbit at an arbitrary longitude at Mars than it does at Earth.

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Programming Note: Off for 3 weeks, June 23 to July 14

Posted by Emily Lakdawalla on 2013/06/23 12:09 CDT

Hi folks, just a note to let you all know I am off for a 3-week vacation.

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Is Opportunity near Lunokhod's distance record? Not as close as we used to think!

Posted by Emily Lakdawalla on 2013/06/21 06:47 CDT | 4 comments

A few weeks ago, a press release from the Opportunity mission celebrated Opportunity's surpassing of the previous NASA off-world driving record. That record was set in December 1972 by the Apollo 17 astronauts aboard their Lunar Roving Vehicle. They seem very close to Lunokhod 2's stated 37-kilometer driving record, but hold your horses -- we now know Lunokhod went longer than we thought.

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Welcome to new staff

Posted by Emily Lakdawalla on 2013/06/20 06:14 CDT | 6 comments

Just a quick post to announce that The Planetary Society's staff is expanding! I am so excited to be able to say that.

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Enormously detailed photo of Kasei Valles from Mars Express

Posted by Emily Lakdawalla on 2013/06/19 02:36 CDT | 7 comments

ESA celebrated the tenth anniversary of Mars Express' launch with a several-day science meeting during which they issued lots of press releases and numerous spectacular photos. My favorite of them all is this enormous image of Kasei Valles on Mars.

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