Dean W. Armstrong

NOAA has a set of older LEO weather satellites that send an analog signal of the the sensor data they receive, one line at a time, and these...

This is from Sentinel-1 taken on March 22nd, 2021.

I just caught the end tail of a pass of Starlink satellites. I haven't really tried to see them, but it was clear tonight and we had a c...

I received an image that was being transmitted from the International Space Station as it passed nearly overhead this evening. They broadcas...

I downloaded the Sentinel-1 Synthetic Aperture Radar data of the Black Rock area taken on August 19, and the start of Burning Man work is ap...

A number of visible passes for Chicago this week: http://www.heavens-above.com/PassSummary.aspx?satid=25544&lat=41.781312&lng=-87.60...

Click to enlarge to medium size. The link below goes to the really big image. Today's weather in Chicago as seen from above via the MOD...

http://www.heavens-above.com/PassSummary.aspx?satid=25544&lat=41.781312&lng=-87.605097&loc=Chicago&alt=0&tz=CST

You can see the International Space Station in Chicago in the evening for the rest of the month. If schedules hold, you will also be able t...

See the International Space Shuttle and the Shuttle together in orbit here in Chicago: http://www.heavens-above.com/PassSummary.aspx?satid=2...

If you are searching for ISS and Shuttle passes over Chicago, tonight's was the last one for a while. If you are an early morning perso...

I just watched an awesome pass of the International Space Station over Chicago. I was able to catch it and follow* the ISS through a telesc...

There are a number of nice passes of the International Space Station visible in Chicago for the next two weeks. Take a look at Heavens-Abov...

The Japanese Space Agency JAXA just deorbited their lunar orbiting spacecraft Kayuga. Watch this , this , this (embedded below) , or this , ...

The European Space Agency launched an ambitious set of satellites a few days ago: Herschel is a 3.5m diameter infrared telescope, and Planck...

UPDATE 7/06/2009: Here's the current set of passes. There are another set of convenient evening passes of the International Space Stati...

You can see the sulfur dioxide (SO2) plume from the Galapagos volcanic eruption via the OMI on the Aura satellite (which I'm using to w...

Two satellites collided in orbit two days ago , creating a spray of debris that will have to be closely watched to avoid further collisions....

The current Space Shuttle mission is only visible in Chicago in the early morning. It will dock with the ISS on day three, so here's th...

There is a big misconception in the media reports about the attempted kinetic attack on USA 193 that may happen tomorrow night: it won't...