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DavidTheGnome
Monroe
Member since Apr 2015
12030 posts

Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
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At the center of the Milky Way galaxy, some 26,000 light-years away, lies a supermassive black hole known as Sagittarius A*. With a mass of roughly 4 million Suns, this colossal cosmic object is a gravitational heavyweight. When something, such as a star, passes by the black hole's outer rim, its enormous gravitational pull accelerates the star to speeds of up to 18.5 million miles (30 million kilometers) per hour – or about three percent the speed of light. The short list of high-velocity stars that make such close approaches to Sagittarius A* are known as S-stars.

..
S0-2 is an important star for testing gravitational redshift because it makes the closest known approach to Sagittarius A*, reaching a distance of just 17 light-hours, or three times the distance between the Sun and Pluto. This means that S0-2 should feel a noticeable nudge in its orbit due the extreme gravitational forces it will experience during its closest pass by Sagittarius A* since its last (16 years ago). Although astronomers knew about S0-2 when it made its last close pass, at the time, they did not have instruments precise enough to definitively observe a gravitational redshift in its starlight. Now they do.


Image: http://www.astronomy.com/-/media/Images/News%20and%20Observing/News/2018/02/S02orbit.jpg?mw=1000&mh=800


DavidTheGnome
Monroe
Member since Apr 2015
12030 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
Sagittarius A*

Sagittarius A* (pronounced "Sagittarius A-star", standard abbreviation Sgr A*) is a bright and very compact astronomical radio source at the center of the Milky Way, near the border of the constellations Sagittarius and Scorpius. It is part of a larger astronomical feature known as Sagittarius A. Sagittarius A* is thought to be the location of a supermassive black hole,[6][7][8] like those that are now generally accepted to be at the centers of most spiral and elliptical galaxies. Observations of the star S2 in orbit around Sagittarius A* have been used to show the presence of, and produce data about, the Milky Way's central supermassive black hole, and have led to the conclusion that Sagittarius A* is the site of that black hole.[9]

Image: https://galaxyzooblog.files.wordpress.com/2015/07/2013orbits_animfull.gif


AUCE05
Atlanta Braves Fan
Member since Dec 2009
24769 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
I have read all kinds of shite on black and white holes. The concept is still difficult to grasp.


GRTiger
USA Fan
On a roof eating alligator pie
Member since Dec 2008
42801 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light


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260
wareaglepete
Auburn Fan
Sugar Bear
Member since Dec 2012
1586 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
Invisible to telescopic eye S2 the star that would not die.
This post was edited on 2/28 at 8:34 pm


saturday
LSU Fan
San Diego
Member since Feb 2007
4010 posts
 Online 

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
quote:

Sagittarius A* (pronounced "Sagittarius A-star"


Mind blown.
This post was edited on 2/28 at 8:35 pm


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280
white perch
Northwestern St. Fan
the bright, happy side of hell
Member since Apr 2012
5114 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
I’ve seen better red shifts in the quad on a Tuesday night



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233
supadave3
LSU Fan
Baton Rouge
Member since Dec 2005
19678 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
Reading stuff like that really makes me feel stupid. I just can't grasp what the hell all that means. It really makes me feel like a fricking retard.


Chuker
Tennessee Tech Fan
Cum & Joke Mines of Mars
Member since Nov 2015
4659 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
quote:

I have read all kinds of shite on black and white holes. The concept is still difficult to grasp.



It's not that difficult. One has good schools and the other has shite schools.


DavidTheGnome
Monroe
Member since Apr 2015
12030 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
3% of the speed of light is really hauling ass



When something, such as a star, passes by the black hole's outer rim, its enormous gravitational pull accelerates the star to speeds of up to 18.5 million miles (30 million kilometers) per hour – or about three percent the speed of light.


kywildcatfanone
Kentucky Fan
Wildcat Country!
Member since Oct 2012
51081 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
Seems rather weak.


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00
FLBooGoTigs1
LSU Fan
Nocatee, FL.
Member since Jan 2008
42629 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
quote:

supermassive black hole


There is a joke somewhere with this


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80
DavidTheGnome
Monroe
Member since Apr 2015
12030 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
The test is whether the stars orbit will be slightly altered by the black holes gravity. If so it further proves Einstein’s theory of gravity.


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41
DanglingFury
VCU Fan
Living the dream
Member since Dec 2007
19936 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
How the frick do they figure shite out like that?


DavidTheGnome
Monroe
Member since Apr 2015
12030 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
Different kinds of telescopes observe the stars orbit over time and can tell they are all orbiting something with extremely powerful gravity but can’t be seen. Physics and math determines that is a black hole.


This post was edited on 2/28 at 8:45 pm


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101
waiting4saturday
LSU Fan
Covington, LA
Member since Sep 2005
5103 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
quote:

white holes


My favorite kind.


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91
YogaPants
LSU Fan
Baton Rouge
Member since Aug 2008
3686 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
quote:

3% the speed of light


Pretty impressive but my dumps on a Sunday morning move faster


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31
geaux88
LSU Fan
Northshore, LA
Member since Oct 2003
11057 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
Damn, Gnome, I wanted to make a stupid joke about supermassive black holes and bars and beer, but I read all the stuff you posted....

Pretty awesome man...thanks! Kind of puts a lot of things in perspective....

Hats off to you and for this thread!!
This post was edited on 2/28 at 8:58 pm


RougeDawg
Louisiana Tech Fan
Member since Jul 2016
503 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
Old news. Happened 26,000 years ago.
This post was edited on 2/28 at 8:58 pm


DavidTheGnome
Monroe
Member since Apr 2015
12030 posts

re: Star will zip by the Milky Way's supermassive black hole at nearly 3% the speed of light
Thanks


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