Is a dark star the same as a black hole?

Is a dark star the same as a black hole?

Whether light is affected by gravity under Newtonian mechanics is unclear but if it were accelerated the same way as projectiles, any light emitted at the surface of a dark star would be trapped by the star’s gravity, rendering it dark, hence the name. Dark stars are analogous to black holes in general relativity.

What is the difference between a black hole and a star?

— When the most massive stars die, they collapse under their own gravity and leave behind black holes; when stars that are a bit less massive than this die, they explode and leave behind dense, dead remnants of stars called neutron stars.

Is a black hole just a star?

Don’t let the name fool you: a black hole is anything but empty space. Rather, it is a great amount of matter packed into a very small area – think of a star ten times more massive than the Sun squeezed into a sphere approximately the diameter of New York City.

Is a black hole stronger than a star?

Here the answer is easy: The gravitational pull becomes infinite at the event horizon (from a certain point of view), Neutron stars have very strong, but not an infinitely strong pull so the gravitational pull of a black hole is greater than a neutron star.

Are all stars black holes?

According to the Space Telescope Science Institute (opens in new tab) (STScI) approximately one out of every thousand stars is massive enough to become a black hole. Since the Milky Way contains over 100 billion stats, our home galaxy must harbor some 100 million black holes.

What is a Darkstar?

Dark star (Newtonian mechanics), a star that has a gravitational pull strong enough to trap light under Newtonian gravity. Dark star (dark matter), a star heated by annihilation of dark matter particles within it. Dark-energy star, an object composed of dark energy that outwardly resembles a black hole.

What’s heavier than a black hole?

The universe is a big place — really big — and it’s filled with some wondrously weighty objects. The heaviest of them all are black holes and neutron stars. In fact, they weigh so much that it’s nearly impossible to wrap your head around numbers that far off the scale.

Can a star survive a black hole?

Astronomers Have Discovered a Star That Survived Nearly Being Swallowed by a Black Hole. When black holes swallow down massive amounts of matter from the space around them, they’re not exactly subtle about it.

At what point does a star become a black hole?

In general, stars with final masses in the range 2 to 3 solar masses are believed to ultimately collapse to a black hole.

Does time stop in a black hole?

Near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops. For example, an object falling into the hole would appear frozen in time at the edge of the hole.

What’s beyond a black hole?

At the center of a black hole the gravity is so strong that, according to general relativity, space-time becomes so extremely curved that ultimately the curvature becomes infinite. This results in space-time having a jagged edge, beyond which physics no longer exists — the singularity.

Whats at the end of a black hole?

The singularity at the center of a black hole is the ultimate no man’s land: a place where matter is compressed down to an infinitely tiny point, and all conceptions of time and space completely break down. And it doesn’t really exist. Something has to replace the singularity, but we’re not exactly sure what.

Who can defeat black hole?

Black holes, the insatiable monsters of the universe, are impossible to kill with any of the weapons in our grasp. The only thing that can hasten a black hole’s demise is a cable made of cosmic strings, a hypothetical material predicted by string theory.

Can the Sun beat a black hole?

Who is stronger than black hole?

The most powerful supernova yet recorded (ASSASN-15lh) was 22 trillion times more explosive than a black hole will be in its final moments. It doesn’t matter how small or how massive a black hole is, their closing fireworks are exactly the same. The only difference is how long it will take a black hole to explode.

Could a black hole be a dark matter star?

If most of the primordial black holes were “born” at a size roughly 1.4 times the mass of Earth’s sun, they could potentially account for all dark matter, said Yale professor of astronomy and physics Priyamvada Natarajan, the paper’s theorist.

Does the death of a star create a black hole?

There are four types of black holes: stellar, intermediate, supermassive, and miniature. The most commonly known way a black hole forms is by stellar death. As stars reach the ends of their lives, most will inflate, lose mass, and then cool to form white dwarfs.

What’s darker than a black hole?

Nothing is darker than a black hole. A black hole is an area of such immense gravity that nothing—not even light—can escape from it. Black holes form at the end of some stars’ lives.

What type of star is a black hole?

What kinds of stars end up as black holes? They are the natural consequence of the evolution of massive stars. Neutron stars have an upper mass limit of 2 to 3 solar masses. A collapsed object of greater mass will continue to collapse indefinitely, forming a black hole.