Posted by Emily Lakdawalla on 2010/08/22 05:03 CDT
This may be a very common event after all: another optical flash has been observed on Jupiter, again from an observer far east of the Greenwich meridian, though it was not Anthony Wesley (for once).
Posted by Emily Lakdawalla on 2010/08/13 10:52 CDT
Congratulations to Scott Sheppard and Chad Trujillo for identifying the first known L5 Trojan asteroid of Neptune!
Posted by Emily Lakdawalla on 2010/05/10 05:22 CDT
Via Daniel Fischer's Tweet about a blog entry by Astro BobI learned of something which should be obvious to anyone who has trained even a rather small telescope on Jupiter over the past few weeks: one of its iconic stripes is just plain gone.
Posted by Emily Lakdawalla on 2009/12/16 01:01 CST
There are two cool stories circulating today on the theme of discovering new places in the cosmos.
Posted by Emily Lakdawalla on 2009/10/10 04:47 CDT
The Palomar Observatory adaptive optics image of the crater Cabeus remains the best I've seen from ground-based telescopes of the LCROSS impact site.
Posted by Emily Lakdawalla on 2009/10/09 10:43 CDT
Here's the sharpest optical image shown today of the Moon, from Palomar Observatory.
Posted by Emily Lakdawalla on 2009/10/09 10:02 CDT
I am pretty sure this image shows the LCROSS impact plume and its shadow as seen from the MMT observatory in Arizona, but as Alan Boyle just pointed out, the time stamps indicate the photos were all taken before the nominal impact time.
Posted by Ken Kremer on 2009/05/22 05:13 CDT
Farewell to Hubble, Obama Calls, Astronauts Testify to Congress as Shuttle is Set to Land
Posted by Emily Lakdawalla on 2006/05/07 08:10 CDT
After the political discussions of the morning, Mike Brown stood up to give the "highly subjective view of one ground-based astronomer," he said.
Posted by Emily Lakdawalla on 2004/11/11 07:10 CST
Uranus has the unfortunate reputation of being the most boring planet in the solar system. But where it appeared to be a nearly featureless, hazy blue ball to Voyager 2, it is now blooming dozens of clouds that are visible to the sharp-eyed Keck II Telescope.
Posted by Emily Lakdawalla on 2004/09/29 12:00 CDT
This morning, asteroid 4179 Toutatis was so close to Earth that simultaneous observations from two telescopes in the same country could show parallax that is obvious even to the least experienced observer. The two telescopes belong to The European Southern Observatory and are located at La Silla and Paranal in Chile