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Lovely Lovejoy pictures

Emily Lakdawalla • December 27, 2011

Just a few of the amazing photos of Comet Lovejoy that have been taken from the southern hemisphere over the last few days. Comet Lovejoy is the first Kreutz sungrazer to have been discovered from the ground in 40 years, and after its surprising survival of its passage close to the Sun, it has been putting on a spectacular show in southern skies.

A recap of Comet Lovejoy

Jason Davis • December 22, 2011 • 1

A timeline of one of the most memorable solar events in recent memory: the observations by six Sun-observing spacecraft of Comet Lovejoy making its perihelion passage.

Video: Comet Lovejoy entered SOHO's LASCO C3 field of view this morning!

Emily Lakdawalla • December 14, 2011

An animation of comet Lovejoy entering the field of view of one of SOHO's Sun-monitoring cameras.

Sungrazing with Lovejoy's Comet

Jason Davis • December 06, 2011

Observations of the newly sighted Kreutz sungrazer comet C/2011 W3 (Lovejoy) from the ground and from SOHO (a joint NASA/ESA satellite) and STEREO (NASA's Solar Terrestrial Relations Observatory).

Brief notes from Day 2 of the DPS-EPSC meeting

Emily Lakdawalla • October 04, 2011

It's been a very full day at the DPS-EPSC 2011 joint meeting. My day was less full than it might have been, because I overslept and missed most of the morning's session. I really needed the rest though so I think it was probably for the best!

Meeting today: The infelicitously named "SBAG"

Emily Lakdawalla • August 25, 2011

NASA funds regular meetings of scientists who work on different parts of the solar system to provide scientific input into NASA's future plans. These "analysis groups" are known by their acronyms, all of which sound kind of horrible, but none has quite as terrible-sounding an acronym as "SBAG," usually pronouced "ess-bag," the Small Bodies Assessment Group.

Comet Garradd in 3D (sort of)

Emily Lakdawalla • August 12, 2011

Amateur astronomer Patrick Wiggins sent me this neat little animation of comet Garradd moving against background stars through an hour's worth of observing. I'm not any kind of astronomer but if I were I think I would get a kick out of looking at things that appear to move within one night of watching -- asteroids, comets, Jupiter's spots. I'm impatient that way.

Rosetta has entered its long sleep

Emily Lakdawalla • June 14, 2011

One big space event that I missed while I was on vacation was Rosetta's entry into hibernation. Rosetta is the biggest interplanetary spacecraft that has been launched by ESA, and it has the groundbreaking goal of entering orbit around a comet and dropping a lander onto it.

The scale of our solar system

Emily Lakdawalla • May 02, 2011

Space.com has taken advantage of the infinitely scrollable nature of Web pages to produce a really cool infographic on the scales of orbital distances in the solar system.

LPSC 2011: Kirby Runyon on Mars, the Moon, Hartley 2, and Ganymede

Kirby Runyon • March 15, 2011

Kirby Runyon, a second-year grad student at Temple University, offered to send me some writeups of selected presentations from last week's Lunar and Planetary Science Conference, and I enthusiastically agreed.

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