Brighter than the sun:
Brighter than the sun: stunning new details on the meteor that exploded over Russia
By Katie Drummond From The Verge
Thanks largely to eyewitnesses and video footage, researchers have documented Chelyabinsk with incredible detail
It was the blast felt around the world: when the Chelyabinsk meteor exploded over Russia in February, its shock wave was powerful enough to emit subsonic waves to far-flung regions across the planet.
By watching various amateur video clips of the rock as it soared towards Earth, the team was able to determine key details, shown in the illustration below. Among them are the meteor’s precise trajectory, its speed upon entering the atmosphere, exactly where it fragmented into smaller pieces, and the point at which that explosion shone most powerfully. That moment — a searingly bright flash 30 times stronger than the sun — actually caused severe sunburns among some bystanders.
Now, experts hope that their analysis of the Chelyabinsk incident can help detect and track future space-based threats — and calculate the potential havoc they might wreak upon planet Earth. And it looks like they might be making more such calculations than previously anticipated: yet another new study, published this week in Nature, warns that the likelihood of events like Chelyabinsk is 10 times higher than experts had thought — making the phenomenon one we can expect every 25 years or so.
For more on this story go to:
http://www.theverge.com/2013/11/8/5078430/new-details-on-russian-meteor-chelyabinsk