Articles

Jaime Nomen

In spite of some bad weather conditions during the first part of this year, the new camera bought with funds from a Planetary Society Shoemaker Near Earth Object grant helped us to discover and confirm ten new near-Earth objects.

Emily Lakdawalla

Here are some of the noteworthy items from the morning's session on

Emily Lakdawalla

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.

Emily Lakdawalla

A terrific set of Goldstone radar images of a good-sized near-Earth asteroids named 2010 JL33 was posted to the JPL website yesterday. They also posted a movie version but something about these pixelated radar image series absolutely begs for them to be displayed as an old-school animated GIF, so I made one.

Emily Lakdawalla

Most of you have probably heard by now of two small asteroids, both in the neighborhood of 10 meters in diameter, recently discovered on trajectories that pass unusually close to Earth.

Charlene Anderson

Visualization can help the brain comprehend what words and numbers can struggle to covey. There's a YouTube video posted by

Emily Lakdawalla

That's a bit of an overdramatic title, but it's true that the most efficient way for us to reduce the risk we face from asteroids that have a very small chance of hitting Earth in the future is to determine their orbits more precisely.

Emily Lakdawalla

Every time I post a radio telescope image of a near-Earth asteroid, I get at least one reader question asking me to explain how radio telescopes take photos, so I'm hereby writing a post explaining the basics of how delay-Doppler imaging works.

Bruce Betts

Our past Shoemaker NEO grant recipients have once again shown themselves to be a hardworking and enterprising group.

Emily Lakdawalla

Are you a serious amateur astronomer who enjoys the challenge of following up on the discoveries of faint near-Earth objects?

Bruce Betts

This week Bruce Betts is attending a U.N. meeting in Austria, in particular the parts focused on international considerations of the near-Earth object threat.

Amir Alexander

It was January of 2004 when the elegant curve of the Vichada first caught the attention of geologist Max Rocca of Buenos Aires. Could the course of the river have been shaped by the circular outlines of an impact crater? Rocca decided to find out.

Emily Lakdawalla

The Wide-field Infrared Survey Explorer (WISE) just took its lens cap off on December 29, and posted its

Emily Lakdawalla

2010 AL30 zipped past us harmlessly about five hours ago. Because of its one-year orbital period, many people speculated it might be a manmade object, but 2010 AL30 might, in fact, be artificial.

Emily Lakdawalla

Radio scientist Lance Benner posted to the Minor Planets Mailing list this evening the following message:

Emily Lakdawalla

In less than 24 hours, a newly discovered asteroid known as 2010 AL30 will be zipping past Earth at an altitude of approximately a third the Earth-Moon distance. There's no chance it'll hit us, but it's generating a lot of excitement in the community of amateur and professional near-Earth asteroid observers.

Emily Lakdawalla

Not quite ten years ago, the Near Earth Rendezvous (NEAR) spacecraft arrived at the near-Earth asteroid Eros. NEAR accomplished many firsts.

Emily Lakdawalla

Could a space rock hit Earth and cause widespread devastation? What could we do if we found an asteroid or comet on a collision course with Earth?

Emily Lakdawalla

From the

Bruce Betts

Our 2007 Shoemaker NEO Grant winners have been extremely busy over the past two years. Take for example Quanzhi Ye of Guangzhou, China: He was only 18 when he received the award but already the principal investigator of the sky survey at the Lulin Observatory in Taiwan.