Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Blogs

Blog Archive

 

Neptune: The new amateur boundary?

Posted by Christophe Pellier on 2013/11/07 05:39 CST | 3 comments

Can features on Neptune be observed by amateur astronomers? For years, the Hubble Space Telescope and some professional terrestrial observatories have been revealing incomplete belts and spots on the surface of Neptune. Now, spots have been imaged by amateurs.

Read More »

Why does ISON look green?

Posted by Matthew Knight on 2013/10/29 12:23 CDT

You may have noticed that Comet ISON appears to have a green halo in some recent images, but in other images acquired at about the same time, it doesn’t. Thanks to the beautiful new spectrum posted earlier today by Christian Buil, it’s relatively easy to understand why.

Read More »

Uranus Awaits

Posted by Geraint Jones on 2013/10/18 11:23 CDT | 3 comments

It’s been a long time since anyone paid Uranus a visit. The Uranus system is, however, fascinating, as evidenced by the wealth of topics covered by the diverse group of planetary scientists who gathered to discuss it last week at the Paris Observatory.

Read More »

Our Improved Optical Search for ET
New hardware processes terabytes of data every second

Posted by Bruce Betts on 2013/10/08 11:15 CDT

The Planetary Society Optical SETI (OSETI) Telescope was successfully upgraded and fully tested, and is now fully operational looking for aliens. Here are some updates on the performance and progress. In summary, the upgraded telescope is performing just as hoped and is scanning the skies.

Read More »

Making mirrors for the Giant Magellan Telescope

Posted by Jason Davis on 2013/09/02 06:00 CDT | 1 comments

A video on the Giant Magellan Telescope and its third mirror, which was cast on August 24, 2013 at the University of Arizona's Steward Observatory Mirror Lab in Tucson, Ariz.

Read More »

Book review: Europe to the Stars, by Govert Schilling and Lars Lindberg Christensen

Posted by Emily Lakdawalla on 2013/08/16 11:05 CDT

The world's great telescopes capture stunning photographs of stars, nebulae, and other sky phenomena. In Europe to the Stars, authors Govert Schilling and Lars Lindberg Christensen share many such photos. But the real stars of this book are the great telescopes of the European Southern Observatory.

Read More »

Comet ISON lives on! (we think...)

Posted by Karl Battams on 2013/08/13 01:31 CDT | 1 comments

For several weeks now, ground-based observers have been blind to Comet ISON as our local star was sitting directly between us and the comet. I am delighted to share two pieces of good news: first, that ISON is still alive and well, and secondly that it has been recovered.

Read More »

The Peak of Discovery
Touring the Mount Wilson Observatory with the Hale Family

Posted by Mat Kaplan on 2013/07/16 04:20 CDT

This week's Planetary Radio goes on tour at the Mount Wilson Observatory with descendants of its founder.

Read More »

Planetary Society Hangout: Arkyd Telescopes, Planetary Resources, Chris Lewicki
Thursday, Jun 27, noon PDT/1900 UTC

Posted by Bruce Betts on 2013/06/27 11:15 CDT | 2 comments

We talked to Chris Lewicki, President of Planetary Resources, about their upcoming Arkyd telescopes including one for the public, asteroid mining, and more. Hosted by Bruce Betts with Jennifer Vaughn.

Read More »

Astronomy Enters a New Era
Join us for a live webcast about thrilling new tools that will come online in the next decade.

Posted by Mat Kaplan on 2013/05/26 08:45 CDT | 3 comments

A live conversation about just a few of the powerful new instruments that will revolutionize our knowledge of the cosmos once again.

Read More »

Checking in on Jupiter

Posted by Emily Lakdawalla on 2013/03/12 01:57 CDT | 2 comments

We don't have any spacecraft at Jupiter right now, which is a pity. Until we do, we have to rely upon Earth-based astronomers to monitor the changing face of the largest planet.

Read More »

Sea Salt

Posted by Mike Brown on 2013/03/06 10:41 CST | 3 comments

Ever wonder what it would taste like if you could lick the icy surface of Jupiter’s Europa? The answer may be that it would taste a lot like that last mouthful of water that you accidentally drank when you were swimming at the beach on your last vacation.

Read More »

Planetary Society Weekly Hangout: Studying Asteroids from Earth with Andy Rivkin

Posted by Emily Lakdawalla on 2013/02/28 01:25 CST | 5 comments

Emily Lakdawalla's guest this week was Applied Physics Laboratory asteroid astronomer Andy Rivkin. We talked about the menagerie of rocks in the asteroid belt, how many of them travel in pairs and triples, how some of them are surprisingly wet, and how much you can learn about asteroids using Earth-based telescopes.

Read More »

Observing 2012 DA14

Posted by Edward Gomez on 2013/02/18 05:14 CST | 4 comments

Mostly the Universe stays unchanged for hundreds, thousands or even millions of years. There are some cases however when some things change really rapidly. Recently I observed one of these rapidly changing, transient phenomena, as asteroid called 2012 DA14. I work for Las Cumbres Observatory and we have been trying to observe this asteroid since 5 February.

Read More »

Stars, and stars, and stars: pretty pictures from the European Southern Observatory

Posted by Emily Lakdawalla on 2013/01/21 03:39 CST | 4 comments

My solar system chauvinism is well-established, but I am as much a sucker for beautiful astrophotos as the rest of you. Once in a while I get a media advisory from the European Southern Observatory about a new pretty picture posted on their website, and then I inevitably lose an hour following links to one stunner after another.

Read More »

The Astronomy Budget Squeeze
It's not just NASA. All of space science feels the pinch of smaller budgets.

Posted by Casey Dreier on 2013/01/09 07:11 CST | 1 comments

It's not just the Planetary Sciences division within NASA that's under harsh budgetary times. The NSF Division of Astronomical Sciences is facing a choice between funding scientists and funding telescopes. A report from the 221st AAS meeting in Long Beach.

Read More »

DPS 2012: Double occultation by Pluto and Charon

Posted by Emily Lakdawalla on 2012/10/26 03:12 CDT | 5 comments

A few talks at last week's Division for Planetary Sciences meeting discussed observations of a double occultation -- both Pluto and Charon passing in front of the same star.

Read More »

DPS 2012: Future impact risks

Posted by Emily Lakdawalla on 2012/10/24 01:14 CDT | 7 comments

Continuing my writeup of notes from last week's Division for Planetary Sciences meeting: presentations on the risks of future asteroid impacts. How much risk do we face, and what are the appropriate actions to take in the face of that risk?

Read More »

DPS 2012: The most detailed images of Uranus' atmosphere ever

Posted by Emily Lakdawalla on 2012/10/22 04:14 CDT | 4 comments

New ground-based images of Uranus show more finely detailed structure than any photos I have ever seen.

Read More »

Following up the dark spot on Uranus

Posted by Heidi Hammel on 2012/09/04 06:38 CDT | 2 comments

It was a surprise and delight to have our Icarus paper highlighted in Emily Lakdawalla's blog. Thanks for highlighting Uranus, since it has gotten, ahem, a bum rap over the years. Here's more about our discovery of the dark spot on Uranus.

Read More »

Items 21 - 40 of 75  Previous1234Next
Facebook Twitter Email RSS AddThis

Advocacy

Election 2016

Space rarely makes a strong showing in national elections, despite the major state of transition NASA finds itself in today.

Help us catalog and source statements made by candidates referring to civil space issues.

Learn More

Featured Images

Mercury and Venus from MESSENGER
HiRISE view of Curiosity, sol 1207 (December 29, 2015)
Tiny grains of Martian sand
Fine and coarse fractions of Namib dune sand
More Images

Featured Video

Intro Astronomy 2016. Class 2: How We Explore Space

Watch Now

Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join the New Millennium Committee

Let’s invent the future together!

Become a Member

Connect With Us

Facebook, Twitter, YouTube and more…
Continue the conversation with our online community!