Posted tagged ‘science’

Carl Sagan’s “Cosmos” TV series, now free online

June 19, 2009

This is a real treasure. Many thanks go to Hulu.com.

Vodpod videos no longer available.

more about "Carl Sagan’s "Cosmos" TV series, now …", posted with vodpod

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Observation Log 2/25/09: Comet Lulin!

February 25, 2009

Hiya kids. I’ve been observing casually whenever possible, and catching every ISS overflight I can. Nothing worth writing about, and life/work has been far too busy to wax eloquent on anything except, “When is bedtime?”

Still, this was an exception.

It was an easy hop from Saturn to locate Comet Lulin. The coma was well-defined, and easily 1° across. The nucleus was also easily spotted, centered within. Averted vision revealed a bit more light, but not a lot. I was only out for 10 minutes tops, so between that and the sky conditions it wasn’t a fantastic opportunity; just a very good one.

Tonight is my first non-overcast night in a while, and coincidentally the evening of Lulin’s closest pass, approximately 38 million miles from Earth. I know it’s impossible, but it actually looked closer than the background stars!

Link: Math humor- 36 Methods of Mathematical Proof

April 6, 2008

I found a humorous page of unorthodox methods mathematical proof, via The Presurfer Blog. Ten extra points for knowing what “Q.E.D.” is short for, and what it means, without looking it up!

This is National Dark Sky Week!

March 29, 2008

From March 29 to April 4 is the annual National Dark Sky Week. And tonight, from 8 to 9PM is Earth Hour. To take part in tonight’s event, turn off the lights and appliances you don’t need (like a PC running 24/7?) from 8 to 9PM. Outdoor lights are especially encouraged. Similarly, National Dark Sky week promotes energy saving and a better view of the beautiful universe around us for the whole week.

And it’s always a good thing do put less carbon into the atmosphere. Give it a try!

More information here.

Spectacular Space Shuttle night launch video

March 22, 2008

Space Shuttle Endeavour had cameras mounted on its solid rocket boosters when it climbed into orbit on March 11. Together they produced a beautiful video of a night launch from the spacecraft’s point of view. It’s hard to believe the shuttle is 28 miles up and moving at 3100 mph when the boosters detach—without the Earth in the background, the spacecraft appears still.

Uh, is this a good thing?

March 20, 2008

layered iceberg

The Daily Mail reports that a research ship 600 miles from Antarctica has found and photographed icebergs with layers dating back “hundreds, if not thousands, of years.”

It would be interesting to find a more scientific citation for these sightings. While the icebergs are visually stunning (more pictures can be seen at the article), one can’t help but wonder if they are anachronisms, rare even in geological timeframes, and yet another indication of global climate change.

Holding the Sun

March 17, 2008

This is a page of pictures submitted by regular folks, all with the theme of holding the sun. A few, like the one here, are very well done. One is a very creative joke picture.

Warning: There are some links to some Not Safe For Work pictures on the “Holding the Sun” page. The one I viewed was artful and beautiful, but I make no promises. Kids, please get your parent’s permission first.