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Jupiter has lost a belt!

Emily Lakdawalla • May 10, 2010

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.

Two cool discoveries today: icy-hot exoplanet and smallest ever Kuiper Belt object

Emily Lakdawalla • December 16, 2009

There are two cool stories circulating today on the theme of discovering new places in the cosmos.

Video from Palomar Observatory on LCROSS impact night

Emily Lakdawalla • October 10, 2009

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.

Palomar image of crater Cabeus after LCROSS impact

Emily Lakdawalla • October 09, 2009

Here's the sharpest optical image shown today of the Moon, from Palomar Observatory.

MMT image of the plume and its shadow?

Emily Lakdawalla • October 09, 2009

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.

Gravity's Bow

Timothy Reed • June 15, 2009

Timothy Reed explains how optical telescopes are tested for gravity sag, and the methods used to counteract or compensate for it.

Aloha, Io

John Spencer • June 08, 2009

Taking a look at Jupiter's moon, Io, from Hawaii.

Farewell to Hubble, Obama Calls, Astronauts Testify to Congress as Shuttle is Set to Land

Ken Kremer • May 22, 2009

Farewell to Hubble, Obama Calls, Astronauts Testify to Congress as Shuttle is Set to Land

An Auspicious Week for Astronomy

Mark Adler • May 11, 2009 • 1

On Monday, if all goes well, we will launch the Space Shuttle to rejuvenate one the greatest scientific missions launched on or off the Earth: the Hubble Space Telescope.

Mapping Mars, now and in history

Emily Lakdawalla • February 26, 2009

Planetary cartographer Phil Stooke has been working on a cool project to compose and compare maps of Mars that show how we saw the planet throughout the Space Age.

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