INCOMING!, Detection and observation of Earth-approaching asteroids. |
INCOMING!, Detection and observation of Earth-approaching asteroids. |
Oct 6 2008, 07:53 PM
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Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
no sone seems to have noticed this yet
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Guest_PhilCo126_* |
Oct 19 2008, 09:51 AM
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Guests |
Pitty the list doesn't give info on the satellite-recorded impact of 1s February 1994 above Papua New Guinea.
The event was witnessed by fishermen near the island of Kusaie, the explosion occurred at 35 km altitude. According to the observed flash, scientists estimated that the original object was about 15 m in diameter and the blast energy was in the range of about 100 KiloTons ( comparison: Atombombs: Hiroshima = 10 KiloTon , Nagasaki = 20 KiloTon ). So far statistics point out that a 1 KiloTon event takes place every WEEK, and a 1 MegaTon event once every MONTH... Although 35000 tons of material per year fall into Earth's atmosphere, and 70% of our planet consists of oceans, the 1 MegaTon rate seems alarming |
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Oct 19 2008, 03:58 PM
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
... a 1 MegaTon event once every MONTH... Um, are you sure about this? Can you give some references? That doesn't jibe with estimates I've found on the web, I could buy a kiloton event every month or a few months, but a megaton event is a major fraction of a Tunguska-type event - those are said to happen once every few decades at most. -------------------- |
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