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Tuesday, October 18, 2011

Playing Dodgeball in Space

Comet Elenin fading. Credit: Michael Mattiazzo

By Mark Daymont
Space Center Educator and Flight Director

While we wait for the eventual demise of German satellite ROSSAT between the 20th and the 23rd, Earth managed to avoid destruction from the "Doomsday Comet." According to some conspiracy theorists, Comet Elenin was expected to hit the Earth on Sunday the 16th. Well, it must not have been too many conspiracy theorists, because not even I had heard of this one.

Apparently, some of the conspirators believed that the name of the comet, Elenin, was code for ELE, or Extinction Level Event. This ties into something called the Nibiru or Planet X collision. Believers fear that a large planetary body or comet not currently known by astronomers (but known to the ancient astronomers) will come barreling out of the dark and collide with the Earth, or make a near miss, enough to cause tremendous geological damage and threaten the human species.

In actuality, Comet Elenin was discovered in December 2010 by Russian amateur Leonid Elenin. Already very faint, it was estimated to be a long-period comet of only a diameter of about 3-4 kilometers. After a large solar storm in August, the comet was seen to be breaking up and growing much fainter. As it swept around the Sun on September, the break up was figured to be complete and only a cloud of cometary debris was noted. See the top photo for a reduction in brightness.

So, on last Sunday, the remaining debris swept pass the Earth. Only it wasn't even close. It passed by at about the same distance as from Earth to Venus. Here in the SpaceRubble Bunker we didn't even notice.

And yet, I should make note that on my drive home from SLC Saturday night, I witnessed a small fireball meteor descending westward apparently over the Oquirr mountains. Curious timing, that...

Monday, October 17, 2011

Run! Another satellite is falling!

credit: EPA/Barbara Walton

Well, don't panic just yet.

It is true, however, that another satellite is out of control and exepcted to re-enter Earth's atmosphere on October 22nd or 23rd. This time it's the German satellite ROSAT, which was originally launched into space in 1990. This time, though, the scientists have less assurance about where and when it might come down.

ROSAT satellite, artist concept.
Credit: German Aerospace Center.

Scientists suspect that quite a bit of this object may survive the fall, so the debris might weigh as much as a ton and a half! They have calculated the odds of a person on Earth being struck by ROSAT debris as 1-in-2000. This is a significantly higher risk than we faced from the falling NASA satellite. Still, the odds that YOU are the one who will be hit are incredibly low. Still, better safe than sorry. Carry a camera with you this week and be ready to take pictures of any crash site, wreckage, or havoc. I'll be hiding safely in the Spacerubble Command Bunker, anxiously awaiting word of calamity. Or, I might just do something useful like plot the destruction of evil alien TellyTubbies (have you SEEN them?).

Warning: Do not take this seriously. While the facts in the article may be correct, there is no cause for alarm unless you are actually struck by debris. Remember that debris from the satellite will not be hot, it will cool by the time it may hit you, but it's the weight of some debris that might squish you tragically. The tone of this article is created for entertainment and in no way represents the opinion of anyone of note. If you are alarmed by the warning nature of this post, please calm down and stop watching the news, disaster movies, or listening to conspiracy theorists. If you ARE hit by debris, wow. Nice knowin' ya.

Another Jewel in Humanity's Crown.






Jewish Children in the Warsaw Ghetto

How many millions of people will owe their existence to this Jewel and her comrades in the Zegota? She was a bright flame in Europe's darkest night.

Life offers you two paths. May you take the one less traveled.