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Blog Archive


In Pictures: A Partial Solar Eclipse from Space

Posted by Jason Davis on 2015/09/15 10:06 CDT

Two sun-observing spacecraft in Earth orbit captured images of a partial solar eclipse Sunday morning.

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In Pictures: DSCOVR Headed for Deep Space

Posted by Jason Davis on 2015/02/12 09:48 CST | 4 comments

On Wednesday evening, a SpaceX Falcon 9 rocketed into orbit with DSCOVR, the Deep Space Climate Observatory. Here's a photo and video roundup.

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Two Days, Two Launches and Three Landings

Posted by Jason Davis on 2015/02/09 04:38 CST | 4 comments

Within a two-day span, two rocket launches and three ocean landings are scheduled—one of which involves an autonomous spaceport drone ship.

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A (Difficult) Day in the Solar System

Posted by Bill Dunford on 2014/10/30 10:05 CDT | 13 comments

After a bad day on the launch pad, some perspective.

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The Pivotal Discovery You’ve Probably Never Heard Of

Posted by Karl Battams on 2014/08/29 02:09 CDT | 5 comments

Karl Battams highlights the historic discovery, by an Air Force satellite, of a sungrazing comet.

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Intro Astronomy 2014. Class 12: The Sun and Stars

Posted by Bruce Betts on 2014/05/01 05:31 CDT

Explore the physical characteristics and inner workings of the Sun and then learn all about Stars and Stellar Evolution in this video of class 12 of Bruce Betts' Introduction to Planetary Science and Astronomy class.

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Missions to a Star

Posted by Bill Dunford on 2014/02/17 02:45 CST | 2 comments

Upcoming deep space missions will venture right to the heart of the Solar System.

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The Mercury Transit You Probably Missed

Posted by Karl Battams on 2013/12/30 10:29 CST | 2 comments

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!

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Comet ISON Wrap Up
A Tail of Cat-Possums and the Undead

Posted by Bruce Betts on 2013/12/05 05:49 CST

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.

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Comet ISON live blog

Posted by Emily LakdawallaBruce Betts on 2013/12/05 10:00 CST | 10 comments

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.

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Multiple views of comet ISON from solar-observing spacecraft

Posted by Emily Lakdawalla on 2013/12/02 07:50 CST | 6 comments

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.

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Comet ISON Hangouts November 25 and December 2

Posted by Emily Lakdawalla on 2013/12/02 11:00 CST | 3 comments

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.

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ISON, Encke, Mercury, and Home

Posted by Karl Battams on 2013/11/22 10:04 CST | 3 comments

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.

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

Posted by Jason Davis on 2013/06/28 06:01 CDT | 1 comments

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.

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Comet PANSTARRS from the other side of the Sun!

Posted by Karl Battams on 2013/03/14 05:21 CDT | 8 comments

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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Curiosity catches sunspots along with Phobos and Deimos transits

Posted by Emily Lakdawalla on 2012/10/03 07:15 CDT | 2 comments

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.

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

Posted by Emily Lakdawalla on 2012/05/16 11:45 CDT | 1 comments

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

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Solar storm in progress

Posted by Emily Lakdawalla on 2012/03/07 09:27 CST

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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A recap of Comet Lovejoy

Posted by Jason Davis on 2011/12/22 10:45 CST | 1 comments

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.

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

Posted by Emily Lakdawalla on 2011/12/14 09:37 CST

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

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