Comments on: Researchers Observe Extra-galactic Meteor

By: Tom

Tom — Mon, 28 Jan 2008 14:09:32 +0000

1000/? per hour? If MPH, that converts to just .45 km/s, or 447.04 m/s, much slower than this object…

By: utsav

utsav — Sun, 27 Jan 2008 12:24:30 +0000

do you known something named like chaved was seen in the year 1988 in the sky and was going in the speed of some 1000/hour on 4th of april

By: charles

charles — Sat, 26 Jan 2008 13:54:03 +0000

It would be truly interesting to see and analyze but how would it be possible to stop such a cosmic bullet? It's going at about 0.1% the speed of light. The kinetic energy is astronomical and even something with 1% of that energy (per mass) is going to totally evaporate itself and a much larger chunk of whatever it hits. I think the NASA types would have to do some significant rethinks and customizations to come up with a capture mechanism onboard a satellite.

As for origins, the extragalactic sounds intriguing as well. There are perhaps other possibilities as well. Something like a GRB or supernova might pulverize planets or blow away material surrounding the star at seriously high speeds as well.

By: Peter

Peter — Fri, 25 Jan 2008 23:31:09 +0000

AFAIK the starts orbiting their galactic centre bob up and down, merry-go-round style, which could over the course of milennia pull bits of dust out of one system and fling them haphazardly into space.

I dread to think what would be left of the planet if a larger body (such as another star's 'cast away' or stolen kuiper-belt-type object) were to rendezvous with us at several hundred kilometers per second!

At this speed, how big would something have to be to get to the surface?

By: onorbit.com/mercury

onorbit.com/mercury — Fri, 25 Jan 2008 22:54:53 +0000

Universe Today Â» Researchers Observe Extra-galactic Meteor…

Russian astronomers observed what they believe is a meteor that came from outside our galaxy….

By: John Mendenhall

John Mendenhall — Fri, 25 Jan 2008 18:23:44 +0000

My back of the envelope calculation, for Andromeda, gives a travel time of 1.5 billion years, and I think the object came from much further away. We need to capture some of these; they may be pieces from the early universe.