Dean W. Armstrong

Sam , Colin and I were talking about biodiesel last night as walk-home talk fodder. It's a great thing--a no-modification substitute f...

Saturn reaches opposition today. Last night was a beautifully clear and warmish Ryerson Thursday observing night. The seeing was perfect ...

Today's visible NOAA satellite image of the Chicago region showed the remnants of two snow bearing systems, one a big snow system on Fri...

Be amused that a 1989 report on the containment of radiation from underground nuclear tests from the Office of Technology Assessment, a mori...

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...

After seeing today's APOD , I've decided to force myself to finish this long-overdue post. (Here's a photo of the Pleiades take...

The New Horizons spacecraft is nearing a possible launch in mid-January. Despite the moniker its mission is to explore the Pluto/Charon sys...

. The Gibbous Moon rising over Rockefeller Chapel, taken over 4 years ago from Ryerson. I took this image with an Olympus E-10. It was a h...

Posner writes a defense against the illegal searches of domestic communications: Posner wrote: The collection, mainly through electronic me...

That loser student lied about the ILL/DHS visit! The liar!

Ed Felten in Freedom to Tinker finally brings up what's been missing in the debate about aggressive copy-protection schemes, namely, th...

I previously wrote an entry about how you can see the Sun interfering with the weather radar at sunrise and sunset, seen here . The weather...

Update Wanker student lied... It's a hoax... South Coast story . To say again.. liar liar liar. I hate liars. This is unacceptable. A...

I am a small fuzzy beetle living in the sands among the lava flows of Amboy Crater!