Are black holes former stars?

Are black holes former stars?

Most black holes form from the remnants of a large star that dies in a supernova explosion. (Smaller stars become dense neutron stars, which are not massive enough to trap light.)

What type of star life cycle is a black hole?

Black holes form from stars of a specific size at the end of their life. A smaller star, like our sun, forms a white dwarf at the end of its life. A medium-size star ends its life as a neutron star. A huge star, many times bigger than our sun, becomes a black hole.

Did stars galaxies or black holes come first?

Because galaxies are the building blocks of the universe, this question lies at the heart of many of the puzzles of cosmic evolution. And the answer? The holes came first, Christopher Carilli of the National Radio Astronomy Observatory and his colleagues announced today at the American Astronomical Society meeting.

Why do galaxies have black holes in the middle?

They are believed to be at the center of every galaxy because they have such gravitational power and strength that they can pull the rest of the dust, asteroids, planets and suns close to it. Everything that is just far enough away will form the galaxy, the rest is dinner for the black hole.

Do all galaxies have a black hole?

Observational evidence indicates that almost every large galaxy has a supermassive black hole at the galaxy’s center. The Milky Way has a supermassive black hole in its Galactic Center, which corresponds to the location of Sagittarius A*.

Which came first the galaxies or the stars?

According to our current understanding of cosmology, however, the universe was featureless and dark for a long stretch of its early history. The first stars did not appear until perhaps 100 million years after the big bang, and nearly a billion years passed before galaxies proliferated across the cosmos.

Is the center of a galaxy a black hole?

Scientists believe that there is a supermassive black hole at the middle of our Milky Way galaxy – but new research has suggested that something more mysterious could be in the centre. Some scientists now posit that Sagittarius A* is not a black hole at all, but a bundle of dark matter.

Is the center of every galaxy a black hole?

Do all spiral galaxies contain a supermassive black hole?

Although not certain, it seems very likely that most (if not all) spiral galaxies contain a supermassive black hole and sometimes more than one. That uncertainty exists for two reasons.

What is the best evidence for supermassive black holes?

What is the best evidence for supermassive black holes existing in the centers of other galaxies? Detailed observations of stars and gas clouds very near the centers of galaxies show that they are rapidly orbiting a very massive object that we can’t see.

Do all galaxies have black holes at their heart?

There is also very strong evidence that black holes may be crucially important, perhaps even required, in the formation of galaxies in the early Universe. This would imply that indeed all types of galaxies (including spirals) contain a gravitational beast at their heart.

What would happen if two spiral galaxies collide?

The collision of two spiral galaxies will likely result in a single giant spiral galaxy. A protogalactic cloud with very little angular momentum is more likely to form an elliptical galaxy than a spiral galaxy. Distant galaxies are more likely to be irregular in shape than galaxies closer to the Milky Way.