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Eris and embargoes (or: don't fear Ingelfinger!)

Emily Lakdawalla • October 12, 2011 • 3

Last Tuesday at the Division of Planetary Sciences meeting Bruno Sicardy presented the results of his research group's observations of a stellar occultation by Eris.

Comet Garradd in 3D (sort of)

Emily Lakdawalla • August 12, 2011

Amateur astronomer Patrick Wiggins sent me this neat little animation of comet Garradd moving against background stars through an hour's worth of observing. I'm not any kind of astronomer but if I were I think I would get a kick out of looking at things that appear to move within one night of watching -- asteroids, comets, Jupiter's spots. I'm impatient that way.

Observing at the WIYN

Meg Schwamb • June 08, 2011

On May 5 and 6, I had a run on the WIYN (Wisconsin-Indiana-Yale-NOAO) telescope, a 3.5 m telescope, the second largest telescope on Kitt Peak in Arizona.

South of the Border

Meg Schwamb • May 25, 2011

The last decade has seen an explosion in our understanding of the solar system with the discovery of the largest Kuiper belt objects (KBOs) of comparable size to Pluto.

So far, no moons found at Ceres or Vesta

Emily Lakdawalla • April 15, 2011

Since the Galileo mission discovered tiny Dactyl circling Ida in 1993, quite a lot of asteroid systems have been found to be binary; there are even a few triples. So it's quite reasonable to guess that two of the biggest asteroids, Ceres and Vesta, might also have satellites.

Welcome to Carnival of Space #191

Emily Lakdawalla • April 05, 2011

Welcome, everyone, to the Planetary Society Blog for the 191st Carnival of Space! Every week, a different webmaster or blogger hosts the Carnival, showcasing articles written on the topic of space.

Checking in on Jupiter: the belt is coming back

Emily Lakdawalla • March 25, 2011

Since it's been several months since I last took a look at Jupiter, I thought it was time to see what's up with the South Equatorial Belt.

A dog-bone-shaped asteroid's two moons: Kleopatra, Cleoselene, and Alexhelios

Emily Lakdawalla • February 23, 2011

Asteroid (216) Kleopatra has been interesting to astronomers for a long time because its brightness is highly variable, but it seems to get more interesting every time somebody looks at it with a new instrument. This week a paper was published in Icarus revealed that it's 30 to 50% empty space.

Close approach to Earth turns Apollo into Aten

Emily Lakdawalla • February 08, 2011

Last week we got buzzed by a very small asteroid, something that happens fairly often. But there were several details that made the close approach of asteroid 2011 CQ1 worthy of note.

Bill Nye and people
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