Monday, June 8, 2015

Black Holes

A black hole is a star that has collapsed so that all of its mass is compressed into a small region. Near a black hole the force of gravity is much stronger than the force of gravity near Earth. Research and post some of the unusual phenomena that occur near black holes.  

45 comments:

Maddi T. said...

Getting near a black hole can kill you in horrible ways.

Although it seems obvious that a black hole is incompatible with life, most people think they would just get crushed. This isn’t necessarily the case. You would most likely get stretched to death because whatever part of your body reaches the even horizon horizon first will experience significantly more gravity.

http://list25.com/25-crazy-facts-black-holes/3/

Xx_Faze_Braedon_Cows_xX said...

You can’t directly see a black hole. Look out! Our Milky Way likely has a black hole.
Dying stars create stellar black holes.Black holes come in a range of sizes.Weird time stuff happens around black holes. The first black hole wasn’t discovered until X-ray astronomy was used.The nearest black hole is likely not 1,600 light-years away.We aren’t sure if wormholes exist.Black holes are only dangerous if you get too close.Black holes are used all the time in science fiction.

Olivia M said...

If you threw the rock hard enough, though, you could make it escape the planet's gravity entirely. It would keep on rising forever. The speed with which you need to throw the rock in order that it just barely escapes the planet's gravity is called the "escape velocity."

http://cosmology.berkeley.edu/Education/BHfaq.html

dominic L said...

a black hole might send you to different dimension since most life near a black hole dies.

yvette C said...

Black holes are the cold remnants of former stars, so dense that no matter—not even light—is able to escape their powerful gravitational pull.
Black Holes - National Geographic
science.nationalgeographic.com/.../black-holes...National Geographic Society

Jade S/ Alexis B said...

A black hole is a mathematically defined region of spacetime exhibiting such a strong gravitational pull that no particle or electromagnetic radiation can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

allexius t said...

Some of the unusual phenomena that occur near black holes.

Anonymous said...

It is thought that the matter that goes into a black hole gets crushed into a tiny point at the center called a "singularity". That's the only place that matter is, so if you were to fall into a black hole you wouldn't hit a surface as you would with a normal star. Once it's there, it's there. As far as we know, nothing would survive going into a black hole. People sometimes talk about "wormholes" as portals to other universes, but it is now thought to be very likely that these can't exist.

A black hole can't suck itself in, but it can suck in other black holes (as well as sucking in gas, dust and stars). When a black hole swallows another black hole (or anything else) it grows larger, and this is one of the ways to grow super-massive black holes that are millions of times more massive than our sun, and often found in the centers of galaxies. In addition, black hole mergers create "gravity waves" or ripples in space that spread out from the black hole and can be observed on earth (in principle, at least -- experiments sensitive enough to measure them are only just being built).

http://www.astro.umd.edu/~miller/teaching/questions/blackholes.html

Chloe Owen ❤️ said...

The average density of a supermassive black hole can be less than the density of water.

Anonymous said...

A black hole is a mathematically defined region of spacetime exhibiting such a strong gravitational pull that no particle or electromagnetic radiation can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

Anonymous chicken said...

A black hole is a mathematically defined region of spacetime exhibiting such a strong gravitational pull that no particle or electromagnetic radiation can escape from it.

Anonymous Cows said...

A black hole is a cow

Xx_cOWS_ 21_ mLG_ fAZE_jAKOB _xX said...

Black holes suck up everything

Anonymous Pigeon said...
This comment has been removed by a blog administrator.
Brooke Carman said...

One Weird thing that happens near Black Holes: Cannabalism. Black Holes often "eat" each other. Larger Black Holes suck in Smaller black holes! :D

Cameron M. said...

The first black hole was discovered with x-ray astronomy.

http://www.universetoday.com/46687/black-hole-facts/

darren said...

Imagine matter packed so densely that nothing can escape. Not a moon, not a planet and not even light. That’s what black holes are — a spot where gravity’s pull is huge, ending up being dangerous for anything that accidentally strays by.
But how did black holes come to be, and why are they important? Below we have 10 facts about black holes — just a few tidbits about these fascinating objects.
You can’t directly see a black hole.
Because a black hole is indeed “black” — no light can escape from it — it’s impossible for us to sense the hole directly through our instruments, no matter what kind of electromagnetic radiation you use (light, X-rays, whatever.) The key is to look at the hole’s effects on the nearby environment, points out NASA. Say a star happens to get too close to the black hole, for example. The black hole naturally pulls on the star and rips it to shreds. When the matter from the star begins to bleed toward the black hole, it gets faster, gets hotter and glows brightly in X-rays.
Look out! Our Milky Way likely has a black hole.
A natural next question is given how dangerous a black hole is, is Earth in any imminent danger of getting swallowed? The answer is no, astronomers say, although there is probably a huge supermassive black hole lurking in the middle of our galaxy. Luckily, we’re nowhere near this monster — we are about two-thirds of the way out from the center, relative to the rest of our galaxy — but we can certainly observe its effects from afar. For example: the European Space Agency says it’s four million times more massive than our Sun, and that it’s surrounded by surprisingly hot gas.

http://www.universetoday.com/46687/black-hole-facts/

haley marsico said...

A black hole never ends, it just keep destroying planets.

Chris said...

A black hole is a fat planet on top of fabric of alonzo.

Jacob Varney said...

Black holes are some of the strangest and most fascinating objects found in outer space. They are objects of extreme density, with such strong gravitational attraction that even light cannot escape from their grasp if it comes near enough. http://www.space.com/15421-black-holes-facts-formation-discovery-sdcmp.html

Hannah Perkins said...

Black holes absorb all surrounding matter and energy within a certain proximity.

Kiara M. said...

You can’t directly see a black hole.

Because a black hole is indeed “black” — no light can escape from it — it’s impossible for us to sense the hole directly through our instruments, no matter what kind of electromagnetic radiation you use (light, X-rays, whatever.) The key is to look at the hole’s effects on the nearby environment, points out NASA. Say a star happens to get too close to the black hole, for example. The black hole naturally pulls on the star and rips it to shreds. When the matter from the star begins to bleed toward the black hole, it gets faster, gets hotter and glows brightly in X-rays.

http://www.universetoday.com/46687/black-hole-facts/

Brooke DeCapua said...

Black holes suck everything in that comes near them. Even light. Thats why they are called black holes.

DYLAN N said...

You can’t directly see a black hole.

http://www.universetoday.com/46687/black-hole-facts/

Anonymous said...

There are theories that whole universe are found inside a black hole, and a universe in that ones black hole, and paradox time!!!

Aidan Farris and Dakota Sanborn said...

A fact is you cannot directly see black whole.

Leah LaFrance said...

Black holes are the only objects in the universe that can trap light by sheer gravitational force.

Anonymous said...

Universes*

Sameena F. said...

Black holes suck in everything that is even near them, even light. Nothing can escape a black hole.

Ian R. said...

Black holes are the cold remnants of former stars, so dense that no matter—not even light—is able to escape their powerful gravitational pull.

http://science.nationalgeographic.com/science/space/universe/black-holes-article/

Abi.D said...

Nothing can escape a black hole.

Anonymous said...

Well, a black hole sucks in everything, nothing can escape, not even light.

Lewin P. said...

A black hole is a mathematically defined region of spacetime exhibiting such a strong gravitational pull that no particle or electromagnetic radiation can escape from it.


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Anthony B said...

You can't directly see a black hole.

Anonymous said...

Black holes warp time.

Logan H. said...

Not even light is able to escape their powerful gravitational pull. -(O.0)-

KOBE DIXON said...

A black hole is a mathematically defined region of spacetime exhibiting such a strong gravitational pull that no particle or electromagnetic radiation can escape from it. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

David Ross said...

A black hole is a mathematically defined region of spacetime exhibiting such a strong gravitational pull that no particle or electromagnetic radiation can escape from it.

Zeke Sturgeon said...

Time seems to almost stop because of the amount of mass because time gets slower around objects with more mass.

Anthony M. said...

They Have a Suction, that is Powerful enough to pull in other stars, and even planets! OH NO! RUN AWAY!

Anonymous said...

Light can't escape a black hole.

tanya .m said...

A black whole is a sphere.

Jack B said...

There is a special critical initial strength such that the field cannot decide whether to evaporate away or collapse to form a black hole.

Nicole Printy said...

Black holes are so dense in matter nothing can escape.

Anonymous said...

black holes... YA!