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Looking down on a shooting star

Emily Lakdawalla • August 15, 2011

This photo is making the rounds of Twitter, Facebook, Google+, and whatever other social network you care to name today. It was shot by astronaut Ron Garan from the Space Station, and it's a meteor seen from above. Way cool.

A fourth moon for Pluto

Emily Lakdawalla • July 20, 2011 • 2

That's right: Hubble observations have yielded the discovery of a third small body orbiting Pluto and Charon.

Hubble's Millionth Observation

Bill Nye • July 05, 2011

The Hubble Space Telescope has recorded its millionth observation. The planet is designated HAT-P-7b.

The scale of our solar system

Emily Lakdawalla • May 02, 2011

Space.com has taken advantage of the infinitely scrollable nature of Web pages to produce a really cool infographic on the scales of orbital distances in the solar system.

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.

Saturn's storm: A quick turnaround from Hubble

Emily Lakdawalla • March 28, 2011

Saturn's raging northern storm has been watched since it began by amateur astronomers, and now Cassini is getting in to the act too. Presumably once astronomers realized the magnitude of what was going on, some of Earth's great observatories were also occasionally pointed at the ringed planet to watch the storm grow.

Orcus and Vanth

Emily Lakdawalla • January 11, 2011 • 1

As part of a big, ongoing project to make a comparison chart of the dimensions and physical properties of solar system objects I've spent the morning tackling the difficult problem of summarizing the physical characteristics of the biggest things that are out there beyond Neptune.

Happy 2011, and an end to the 2010 advent calendar

Emily Lakdawalla • January 01, 2011

Welcome 2011! I can't wait for what this year has in store. The prize for all of you who have enjoyed opening each door in the Planetary Society's 2010 advent calendar is one of the best views we can get of one of the biggest objects in the asteroid belt, Vesta.

MER
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