Dean W. Armstrong

A rare occultation of a star by the Kuiper Belt Object known as Eris was recorded in several stations in Chile and at first glance the data ...

http://www.skyandtelescope.com/observing/home/101264994.html My first thought once it was confirmed was "What is the real rate of visib...

Hey, this is pretty cool; I'm always a fan of planetary conjunctions. Saturn was visible in a few of the images of Lutetia taken by Ros...

Another successful asteroid fly-by! http://www.planetary.org/blog/article/00002577/

An amazing comeback for the little falcon that could-- Credit: ISAS / JAXA / Øyvind Guldbrandsen / Planetary Society Blog The Japanese space...

Link and run: http://arstechnica.com/science/news/2010/06/breaking-news-jupiter-hit-by-yet-another-impactor.ars

Color me surprised: I did not believe, when this object was first reported, and further debate on the Minor Planet Mailing List, that this w...

Patrick Wiggins makes a cool animation of an object passing by the Earth last week: http://users.wirelessbeehive.com/~paw/temp/2010AL30.2.GI...

The LRO imaged most of the Apollo landing site on the Moon. Things will get better as the orbital parameters are modified. There appears t...

Astronomers have discovered a small inbound object a few meters across that appears to be on an impact course with the Earth. The object ma...

The latest observations nearly exclude the possibility of 2007 WD5 colliding with Mars, dropping the probability to 0.01%. http://neo.jpl.na...

I played with the first of the Hayabusa data a few days ago (by that I mean in July)--and Emily Lakdawalla at the Planetary Society is too--...

New observations reduce the possibility from 1/75 (1.33%) to 0.3%. (via the MPML ). The error ellipse has moved from near the center of a ...

http://www.space.com/scienceastronomy/071220-asteroid-mars.html Speaking of 2007 WD5, the orbit is weakly constrained because the observatio...

Astronomers at the Catalina Sky Survey near Tucson discovered an object on November 7th and when the orbit was calculated it was a Near Ea...

The ambitious Japanese asteroid project, Hayabusa , has released its data archive. The asteroid Itokawa was the target; whether they succes...

Surely you've read the news story about a Chilean jet narrowly missing space debris near New Zealand. I can safely say, as the story i...