Star tracked as it orbits the Milky Way's black hole

Star tracked as it orbits the Milky Way's black hole

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Envoyée le mercredi 10 décembre 2008 12:06:06
par newscientistvideo
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http://www.newscientist.com/article/dn16247?DCMP=youtube

Over a period of 16 years, astronomers tracked stars as they orbited the Milky Way's central region, which is thought to harbour a colossal black hole. One star, called S2, was observed over its complete 15.8-year-long orbit. The star approached the black hole to within one light day, which is only about five times the distance between Neptune and the Sun. (Courtesy of ESO)

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Deathpod4

@4d616c65737469636b Thanks for your comment. I had to look back what I'd said as it was 2 years ago. I should have said that they gain mass, not get bigger, but it seems who ever I was talking too had no idea about cosmology anyway so you rather late game of semantics is futile. Perhaps you'd like me to send you some of my 1970's school homework so you can critique that as well.
mercredi 04 janvier 2012 07:57:57
nonohino

The Void, eh?
mardi 07 juin 2011 08:30:03
taepodong1101

andromeda is BIGGER with more stars (1trillion) compared to 100 billion for Milky way. Milkyway is more MASSIVE as there is (supposedly) more dark matter.
lundi 17 janvier 2011 07:24:02
ClitoriousCeasar

lol.. the funniest think is that there are documentaries that try to estimate the fate of our solar system and earth after the collision. like our solar system will even exist by then.. most probably there will be a red giant with only jupiter-saturn-uranus-neptune still around (and there is a very likely possibility that one of uranus-neptune will be gone rogue much earlier). :)
jeudi 11 novembre 2010 02:34:26
rotagen5

How much fuel would it take to send our government "leaders" directly to this centre, and eject them naked into the hole, anyone know? I'm willing to pay more taxes to this end.
lundi 20 septembre 2010 13:18:53
cruppted

thinking we came from apes is a common misconception
mercredi 12 mai 2010 03:32:38
ThexMetalxWithin

why do people even pretend that they can understand science like this? a thousand years from now we'll think wow they were dumbasses that thought they knew about black holes and belived we came from apes!
lundi 08 février 2010 17:30:00
TehKazangsta

yea andromeda and the milky way will prolly collide at some point. but would it really make a difference to us? our sun will have burned earth to a crisp by then anyway. :D
mercredi 16 décembre 2009 19:15:51
ananiasacts

Infinite density doesn't require a lot of mass, any amount will do. Any amount of mass squeezed into a zero volume will result in a black hole as I understand it. It's just that the smaller the hole, the faster its sharply curved event horizon will tend to separate virtual particles from their partners and cause its mass to evaporate.
mardi 08 décembre 2009 10:50:17
illumse

i have heard that in 198,375,273,193.5 years 2 galexys will colide and we will all die so all the planets will dicenagrate too.
samedi 07 novembre 2009 13:20:17
Sk8erfv523

light cant even escape black holes,, simply mind blowing
dimanche 20 septembre 2009 06:47:07
Mathview

Partial Answer: ESO Very Large Telescope has an IR detector for the 2micron band. The telescopes can be linked together as an interferometer. The system has a resolution of 1 milli-arcsecond. That would make distance individual stars resolvable. So it seems the galactic core region is observable using the IR band at the VLT.
dimanche 05 juillet 2009 01:29:52

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