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The Mercury Transit You Probably Missed

Karl Battams • December 30, 2013 • 2

Planetary transits of the Sun by Mercury and Venus don't come along very often, and when they do we make a big deal of it because, well, it's really cool!

Comet ISON Wrap Up

Bruce Betts • December 05, 2013

Comet ISON captivated our world, and many of our world’s robotic emissaries for many months. But, alas, poor ISON is dead -- again. Here I wrap up our enthusiastic coverage of this multi-morphing zombie comet that tried to survive and re-survive as it came within one solar diameter of the Sun.

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.

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