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Ethan Siegel is a theoretical astrophysicist who currently teaches at Lewis & Clark College in Portland, OR. You can learn about him, contact him, or just enjoy the site.
April 8th @ 7PM -- premiere of the short film "Dark Matter", starring me, at Hollywood Theatre in Portland, OR!
October 30, 2009
Category: Astronomy
I had a dream, which was not all a dream. The bright sun was extinguish'd, and the stars Did wander darkling in the eternal space... --Lord Byron, Darkness Or, in other words, boo! Halloween, believe it or not, is an...
Posted by Ethan Siegel at 11:55 AM • 5 Comments • 0 TrackBacks
October 29, 2009
Category: Astronomy
The farther backwards you can look, the farther forwards you are likely to see. -- Winston Churchill Sometimes, we point our most powerful telescopes at the sky, peering as deeply as we possibly can, hoping to shed some light on...
Posted by Ethan Siegel at 10:03 AM • 17 Comments • 0 TrackBacks
October 28, 2009
Category: Q & A
In 1908, a huge fireball streaked across the sky and exploded a few kilometers above the Earth's surface, downing trees for miles and miles around but leaving no impact crater on the ground. This mystery was known as the Tunguska...
Posted by Ethan Siegel at 11:21 AM • 13 Comments • 0 TrackBacks
October 27, 2009
Category: Dark Matter
Perhaps you've been following my ongoing series on dark matter. Perhaps, like many, you're still skeptical. After all, it's not like we've gone and made it in a lab or discovered it in an experiment. 15 years after David Weinberg...
Posted by Ethan Siegel at 2:05 AM • 31 Comments • 0 TrackBacks
October 26, 2009
Category: Galaxies
I do not know what I may appear to the world; but to myself I seem to have been only like a boy playing on the seashore, and diverting myself in now and then finding a smoother pebble or a...
Posted by Ethan Siegel at 10:31 AM • 2 Comments • 0 TrackBacks
October 24, 2009
Category: Random Stuff
Most of the time, I like to showcase some new music to you, or at least music that's new to me. But this week, I heard an old favorite for the first time in a long time. You're probably familiar...
Posted by Ethan Siegel at 10:59 AM • 1 Comments • 0 TrackBacks
October 23, 2009
Category: Astronomy
Seed Magazine (which I've written for) has just put out a space slideshow: Traveling Through Time and Stars. Michael Benson gives an account -- in words and pictures -- of a journey outwards, from nearby stars to nebulae to other...
Posted by Ethan Siegel at 11:35 AM • 3 Comments • 0 TrackBacks
October 22, 2009
Category: Physics
Yesterday, I showed you a video of an amazing incidence of magnetic levitation. There's another video, courtesy of Matthew Sullivan and his students, that demonstrates this equally as well: What do you need to do to make this happen, and...
Posted by Ethan Siegel at 4:58 PM • 4 Comments • 0 TrackBacks
October 21, 2009
Category: Physics
I don't understand French nearly well enough to understand the explanation in this video, but I was amazed at what the physical world can do when I saw this video. (Video courtesy of Wimp.com.) What's going on here? Well, you've...
Posted by Ethan Siegel at 11:06 AM • 13 Comments • 0 TrackBacks
October 20, 2009
Category: Stars
Ever see a picture of a Solar Prominence before? If you have, you'll recognize these loop-like features leaving the Sun's surface and ending up in the Sun's corona: Well two spacecraft designed to monitor the Sun, Stereo A (which stands...
Posted by Ethan Siegel at 10:18 AM • 7 Comments • 0 TrackBacks
Neurophilosophy 11.19.2009
The Island of Doubt 11.20.2009
Greg Laden's Blog 11.20.2009
The World's Fair 11.19.2009
Laelaps 11.20.2009
