HubbleSite: Black Holes: Gravity's Relentless Pull interactive: About This Site: Encyclopedia (2024)

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What is a black hole answer key? ›

A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space.

The radius of a black hole is related to its mass by the simple formula R = 3 M ,where M is the mass of the black hole in units of the sun's mass, and R is the radius of the Event Horizon in kilometers.

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. The energy that held the star together disappears and it collapses in on itself producing a magnificent explosion.

Black holes are regions in space where an enormous amount of mass is packed into a tiny volume. This creates a gravitational pull so strong that not even light can escape. They are created when giant stars collapse, and perhaps by other methods that are still unknown.

If students do not put in enough effort into 42, or are lazy and immature, they will get caught at some point by this black hole. It just means they are tourists for us and need to leave their place for someone else. This ends their curriculum with no return possible.

A black hole is the dead mass of a star which has run out of fuel and collapsed onto itself.

The word four is behaving just like black hole. Both are showing same properties, i.e. absorbing/ attracting properties. Nothing can escape from four just like the black hole. In our whole universe nothing is present, which is going inside black hole and affect the (state/character/properties etc.)

Booker also wanted to know the answer to 42. That is, are there three cubes whose sum is 42? This sum of three cubes puzzle, first set in 1954 at the University of Cambridge and known as the Diophantine Equation x³+y³+z³=k, challenged mathematicians to find solutions for numbers 1-100.

When matter falls into or comes closer than the event horizon of a black hole, it becomes isolated from the rest of space-time. It can never leave that region. For all practical purposes the matter has disappeared from the universe.

As supermassive black holes gobble up gas and dust, the material gets heated up just before it falls in, creating incredible light shows — sometimes brighter than an entire galaxy full of stars. When the material is consumed in clumps of different sizes, the brightness of the black hole fluctuates.

Is our universe in a black hole? ›

In the version as originally proposed by Pathria and Good, and studied more recently by, among others, Nikodem Popławski, the observable universe is the interior of a black hole existing as one of possibly many inside a larger parent universe, or multiverse.

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. Inside a black hole is where the real mystery lies. According to Einstein's theory, time and space, in a way, trade places inside the hole.

White holes are the opposite of black holes, in that they spit out light and matter, rather than trapping it. So far, white holes are purely hypothetical objects, but astronomers are contemplating how they could form in reality.

Eventually, in theory, black holes will evaporate through Hawking radiation. But it would take much longer than the entire age of the universe for most black holes we know about to significantly evaporate. Black holes, even the ones around a few times the mass of the Sun, will be around for a really, really long time!

A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole's “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos.

What is a black hole? A black hole is a relatively small hole that is very dense and can be found within our universe. They have a very strong gravitational pull that nothing can escape, it even has the strength to trap light.

Stellar black holes form when the center of a very massive star collapses in upon itself. This collapse also causes a supernova, or an exploding star, that blasts part of the star into space. Scientists think supermassive black holes formed at the same time as the galaxy they are in.