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Comet ISON live blog

Emily Lakdawalla and Bruce Betts • December 05, 2013 • 10

Comet ISON reached perihelion at 18:25 UT (10:25 PT) on November 28. It's an event that's was watched around the world, accompanied by tons of commentary and streams of photos. We will update this blog entry periodically with links to all the resources that we hear of for following the comet's progress.

Multiple views of comet ISON from solar-observing spacecraft

Emily Lakdawalla • December 02, 2013 • 6

When comet ISON passed through perihelion last week, solar observing spacecraft had a ringside view. Here are several animations of ISON's perilous passage from the SOHO and two STEREO spacecraft.

Comet ISON Hangouts November 25 and December 2

Emily Lakdawalla • December 02, 2013 • 3

Two Hangouts bookended comet ISON's perihelion, hosted by Chuck Beuter of Comet Festival South Bend. On November 25, it was I and Ron Kaitchuck. On December 2, Alex Filippenko and I discussed what happened to the comet over Thanksgiving.

ISON, Encke, Mercury, and Home

Karl Battams • November 22, 2013 • 3

Comet ISON has entered the field of view of the STEREO HI-1A camera, and, in an awesome animation, it joins a large cast of characters already present there.

IRIS safely in orbit, ready to eye sun's atmosphere

Jason Davis • June 28, 2013 • 1

IRIS, the Interface Region Imaging Spectrograph spacecraft, was launched from Orbital Science Corporation's Stargazer carrier aircraft over the Pacific Ocean at 7:27 p.m PDT.

First Analysis: the NASA Planetary Science Budget for 2014

Van Kane • April 10, 2013 • 7

No mission to Europa, diminished funding for outer planets missions, a small bump to small spacecraft missions, and an increase for asteroid detection are part of the White House's proposal for NASA in 2014.

Comet PANSTARRS from the other side of the Sun!

Karl Battams • March 14, 2013 • 8

Comet PANSTARRS is delighting northern hemisphere viewers right now. But it's also big, bright, and beautiful to the STEREO spacecraft.

Curiosity catches sunspots along with Phobos and Deimos transits

Emily Lakdawalla • October 03, 2012 • 2

Curiosity has been shooting photos of the Sun as Phobos and Deimos cross its face, and -- as far as I can tell -- captured sunspots as well.

Cool video: Jupiter, its moons, a comet, and...the Sun?

Emily Lakdawalla • May 16, 2012 • 1

Here's a neat video posted by SungrazerComets (the Twitter identity of the U.S. Naval Research Laboratory's Sungrazing Comets website) this morning.

Solar storm in progress

Emily Lakdawalla • March 07, 2012

Last night the Sun unleashed a large coronal mass ejection in our direction. Here is a compilation of images from SOHO's two LASCO cameras, plus a prediction from the new space weather prediction model that I learned about at the American Geophysical Union in December. The storm will arrive at Earth on March 8.

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