Pick Wayne's Brain

February 16, 2013

Keep Watching the Skies!

Filed under: Commentary, Science — Tags: , , , , , , , — Wayne A. Schneider @ 5:02 AM

Yesterday, and be thankful to Whomever or Whatever you believe in that we can start with that word, a large asteroid given the ever so endearing name 2012 DA14 (don’t you want to adopt one?) passed within about 17,000 miles of the Earth. We have satellites orbiting at about 22,237 miles (approximately 35,787 km) above mean sea level. [Thank you, Arthur C. Clarke, for figuring that out for us.] This asteroid passed (yes, past tense!) closer to us than that. It didn’t hit anything as it passed by, but that is really just a matter of luck, no matter how you believe the Universe works. You may be thinking, “So what? It missed us, right? What’s the problem?” Think of it this way: It missed us by fifteen minutes. As famed Science Guy Bill Nye explains, that’s not the one you should be worried about. For every one of these large asteroids that they’ve been able to find, it is estimated there are 99 that that haven’t been found yet.

But just as much a matter of luck was the meteorite that came crashing down in Chelyabinsk, Russia that same day. [BTW, that link you just passed has some fascinating information in it, including an explanation of the difference between a meteor and an asteroid. Check it out.] Due to some kind of fad or obsession among the Russian people (official motto, “Screw you, Life, we’re still here!”), there are a lot of people driving around with dashboard cameras. It has something to do with insurance claims, or maybe encounters with the police, or maybe even to catch a meteorite flashing across the sky in front of you.

And, because it crashed into Russia, there were the inevitable comparisons to the Tunguska Event. And that’s where I start to get worried. Because they’re talking about a once-in-a-hundred-years event that hasn’t happened in more than one hundred years!

Good night, now. Go to sleep. 😉

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