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are there any objects in this universe which will repel everything(including light) just xactly opposite of what the black holes do?

2007-05-03 02:48:43 · 14 answers · asked by BlaCk]-[aWk 1 in Science & Mathematics Astronomy & Space

repelling i different from reflecting plz remember

2007-05-03 22:27:43 · update #1

14 answers

There may be some gas mass which reflects every thing.

Red supergiants (RSGs) are supergiant stars (luminosity class I) of spectral type K-M and a luminosity class of I. They are the largest stars in the universe in terms of physical size (volume), although they are not the most massive.

Stars with more than about 10 solar masses after burning their hydrogen become red supergiants during their helium-burning phase. These stars have very cool surface temperatures (3500-4500 K), and enormous radii. The four largest known red supergiants in the Galaxy are Mu Cephei, KW Sagitarii, V354 Cephei, and KY Cygni, which all have radii about 1500 times that of the sun (about 7 astronomical units, or 7 times as far as the Earth is from the sun). The radius of most red giants is between 200 and 800 times that of the sun, which is still enough to reach from the sun to Earth and beyond.

These massively large stars are little more than "hot vacuums", having no distinct photosphere and simply "tailing off" into interstellar space. They have a slow, dense, stellar wind and if their core's nuclear reactions slow for any reason (such as transitioning between shell fuels) they may shrink into a blue supergiant. A blue supergiant has a fast but sparse stellar wind and causes the material already expelled from the red supergiant phase to compress into an expanding shell.

The mass of many red supergiants allow them to eventually fuse elements up to iron. Near the end of their lifetimes, they will develop layers of heavier and heavier elements with the heaviest at the core.

The red supergiant phase is relatively short, lasting only a few hundred thousand to a million or so years. The most massive of the red supergiants are thought to evolve to Wolf-Rayet stars, while lower mass red supergiants will likely end their lives as a type II supernova.

Betelgeuse and Antares are the best known examples of red supergiants.

2007-05-04 06:57:03 · answer #1 · answered by Shripathi Krishna Acharya 5 · 1 0

As said by ''toploser'' before, that its on the other side of the black hole, there exists such a situation. But I must tell you that at all the sides of the black hole, everything gets absorbed. However, we know that we are able to see any object only if it emits light. All of the objects that we see in our daily life reflect light. There is no object which can repel everything, but light can be repeled by the smooth polished mirror if it it coated with appropriate amount of silver bromide, neigther too little not too large.
We can also say that there is the existance of White Hole, but scientists have not found it yet. Its existance is considered theoritical.(uptill now)But soon it is on the verge of discovering.

2007-05-03 11:40:08 · answer #2 · answered by Anonymous · 0 0

Yes they are warm holes placed exactly opposite to a black hole in the universe. A black hole and a such kind a hole form a shortcut to go from one part of the universe to another .

Remember it is hypothetical......

2007-05-08 21:28:05 · answer #3 · answered by Selena 1 · 0 0

Well, theoretically, the opposite of a black hole would be a white hole (no, seriously!)

instead of attracting and swallowing matter, they expell matter. Some theorize that they are a sort of teleporter to a partner black hole.

Bear in mind that the existence of a white hole is purely theoretical.

2007-05-03 10:47:05 · answer #4 · answered by Anonymous · 0 0

Light. For example the solar wind (which is comprised of trillions and trillons of photons and other small particles) produces a pressure against anything in their path. They can even be used to power a 'solar sail' to propel a space craft thru the solar system. Light is the opposite of Gravity. Gravity is always attractive, Light is always repulsive.

2007-05-03 10:18:31 · answer #5 · answered by Anonymous · 0 0

White holes

2007-05-06 21:34:30 · answer #6 · answered by hilltopobservatory 3 · 0 0

Maybe there are but currently we just know about black holes (one of the strangest thing in the universe)

2007-05-03 13:49:57 · answer #7 · answered by vipul 1 · 0 0

The jets of a black hole can do just that... i know they emit radio waves, gas and dust particles, other subatomic particles, etc. that move away from the accretion disk at nearly the speed of light.

2007-05-03 10:31:06 · answer #8 · answered by itsSCIENCE 2 · 0 0

We haven't discovered anything like that, but many theories have been made around that possibility. One of them could be the reason why the universe's expansion is accelerating. Maybe something is pushing everything away...

2007-05-03 09:57:24 · answer #9 · answered by Dr Strangelove 2 · 0 0

No, there is not. Worm holes maybe. Some people think that it's true. They are a shortcut through space & time.

2007-05-03 11:30:12 · answer #10 · answered by Shreyan 4 · 0 0

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