Dean W. Armstrong

Oh man, this is great . The radar images from last week indicated the comet was dog-boned shaped but the close-ups from the former Deep Imp...

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...

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...

The RAS observed Comet Lulin in Chicago yesterday. Unforunately it wasn't 100% clear, with some sort of high cirrus haze up, and with a...

UPDATE #2: It's not a comet, it's a fuel dump from a classified rocket launch. On the CCD mailing list: Folks, I just went outside a...

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...

Tooting my own horn. . . . .Comet 17P/Holmes Watch this . . . (well written Chicago Tribune story by Ryan Haggerty) "It's certainl...

We fought with clouds tonight and bad seeing (and bad focus), but we all agreed the comet was larger and fainter tonight. The nucleus was t...

As I mentioned earlier , Comet 17P/Holmes is very bright. It's bright enough to point a regular digital camera into the eyepiece of a h...

We had a great clear Monday after the RAS meeting so we got everyone to come up to the observatory to see the great outburst of Comet Holmes...

If it's clear where you are, go outside right now and see Comet Holmes with your eyeballs, even with a nearly full moon nearby and even ...

Last night it started clearing up right near sunset, and through scattered clouds I was able to see a blazing new comet, C/2006 P1 McNaught,...

Phil Plait's Bad Astronomy has a good post about the source of Stardust's material: http://www.badastronomy.com/bablog/2006/01/14/th...

Stardust will return comet dust samples to Earth Saturday night. I was amused by this statement in an Associated Press article: Residents i...