April 30, 2008
Category: Solar System
But I didn't want one! Stop your whining, Earthlings. We have a serious question to answer, courtesy of Tamara: What’s the moon like below its surface, moving into the interior? And what’s the current thought on its formation? Well, we...
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Posted by Ethan Siegel at 6:43 PM • 14 Comments • 0 TrackBacks
April 29, 2008
Category: black holes
No, not because it was too young to drink! Scientists at the Max Planck Institute for Extraterrestrial Physics were looking at some X-ray objects, and discovered something really weird: a very bright X-ray source moving out of a galaxy at...
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Posted by Ethan Siegel at 4:41 PM • 6 Comments • 1 TrackBacks
Category: Solar System
And if the band you're in starts playing different tunes I'll see you on the dark side of the Moon. One of my favorite readers, Zrinka, asks us why we're only able to see one side of the Moon...
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Posted by Ethan Siegel at 2:05 AM • 20 Comments • 1 TrackBacks
April 28, 2008
Old man Dave writes to me about his back problems: The spine. I want to know about the spine. I know you are not that kind of PHD but still……. I’ve had back problems most of my adult life. It...
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Posted by Ethan Siegel at 12:18 PM • 1 Comments • 1 TrackBacks
April 27, 2008
Category: Blog Info
Dear Reader(s): This is Ethan, and I'm writing this to you to let you know that I owe you an apology. I have gotten so excited with the idea of bringing the story of the Universe to you -- to...
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Posted by Ethan Siegel at 11:33 PM • 6 Comments • 0 TrackBacks
April 26, 2008
Category: Random Stuff
Stop wastin' my time. You know what I want. You know what I need, or maybe you don't. Do I have to come right flat out and tell you everything? Gimme some money! My fellow Americans, are you impatient...
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Posted by Ethan Siegel at 9:15 AM • 3 Comments • 0 TrackBacks
April 25, 2008
Even creationists have said that if you find something that's alive now that's over 6000 years old, it would prove to them that the Earth is at least that old. Previously, the oldest tree in the world was thought to...
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Posted by Ethan Siegel at 2:06 AM • 6 Comments • 0 TrackBacks
Category: Gravity
So as a full member of both the American Astronomical Society and the American Physical Society, I get sent issues of the magazine Physics Today. Well, I was going through the April issue, when I saw this article: Cosmic Sound...
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Posted by Ethan Siegel at 2:05 AM • 1 Comments • 0 TrackBacks
April 24, 2008
Category: Hubble
(Thanks to Starts With A Bang! reader benhead.) The Hubble Space Telescope has released some beautiful images of colliding galaxies in a huge collection! Here are some of my favorites, with my very own names for them (real name in...
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Posted by Ethan Siegel at 4:58 PM • 0 Comments • 0 TrackBacks
Warning: Crazy talk ahead. Some of you may remember that I wrote about inflation and why its alternatives fail awhile back. Apparently, Louise Riofrio didn't get the memo. When there's misinformation about cosmology out there, it's up to me to...
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Posted by Ethan Siegel at 1:49 PM • 23 Comments • 1 TrackBacks