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in dotstorming. Description for the timeline is ok by Dorra. Vote in this padlet among the 3 photos that Athanasia has commented as ok so that we have your final choice for the timeline
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Anonymous 8d
Aimilia.petr I VOTE FOR MY FIRST PHOTO OF BLACK HOLE WITH BLACK BACKGROUND(lol BUT SERIOUSLY)


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padlet among the 3 photos
 padlet among the 3 photos that Athanasia has commented as ok so that we have your final choice for the timeline
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Анонимный 2 дня
Aimilia.petr I VOTE FOR MY FIRST PHOTO OF BLACK HOLE WITH BLACK BACKGROUND(lol BUT SERIOUSLY)


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padlet among the 3 photos that Athanasia has commented as ok so that we have your final choice for the timeline
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Анонимный 2 дня
Aimilia.petr I VOTE FOR MY FIRST PHOTO OF BLACK HOLE WITH BLACK BACKGROUND(lol BUT SERIOUSLY)


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Admins (08-02-2018) 3 photos from your team are ok and are posted in dotstorming. Description for the timeline is ok by Dorra. Vote in this padlet among the 3 photos that Athanasia has commented as ok so that we have your final choice for the timeline

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Admins (08-02-2018) 3 photos from your team are ok and are posted in dotstorming. Description for the timeline is ok by Dorra. Vote in this padlet among the 3 photos that Athanasia has commented as ok so that we have your final choice for the timeline

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The term "black hole" was coined in 1967 by American astronomer John Wheeler, and the first one was discovered in 1971. A Black hole is a region of space where the gravitational pull is so strong that nothing--not even light--can escape.

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We checked how we resize photos and i uplaod this with the inventor of the term black holes (a square 600x600)

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the black hole is a region of space-time with a intense gravitational field.The speed of escape is superior to the speed of the light,any particle of subject can get further from black hole.The "black" adjective   call this way because it cannot send forth light.

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the black hole is a region of space-time with a intense gravitational field.The speed of escape is superior to the speed of the light,any particle of subject can get further from black hole.The "black" adjective   call this way because it cannot send forth light.

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irene faggion,merlara

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and this is a photo of a black hole.

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A black hole is a region of space from which nothing, including light, can escape. According to the general theory of relativity. It is the result of the curving of space time caused by a very dense mass. It was discovered in 11 December 1972.

Around a black hole there is a position of no return, called the event horizon. It is called "black" because it absorbs all the light that hits it, reflecting nothing, just like a perfect black body in thermodynamics. Under the theory of quantum mechanics black holes have a temperature and emit Hawking radiation, which makes them slowly get smaller.

A black hole is found by its interaction with matter. The presence of a black hole can be inferred by tracking the movement of a group of stars that orbit a region in space. Alternatively, when gas falls into a black hole caused by a companion star or nebula, the gas spirals inward, heating to very high temperatures and emitting large amounts of radiation. This radiation can be detected from earthbound and Earth-orbiting telescopes.

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I found a photo where you can learn about the parts of the black hole. The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole. The boundary of the region from which no escape is possible is called the event horizon. Although the event horizon has an enormous effect on the fate and circumstances of an object crossing it, no locally detectable features appear to be observed. In many ways a black hole acts like an ideal black body, as it reflects no light.

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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 a sphere approximately the diameter of New York City. The result is a gravitational field so strong that nothing, not even light, can escape. In recent years, NASA instruments have painted a new picture of these objects that are, to many, the most fascinating objects in Space.

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Black holes have seized people’s imaginations ever since Tom Bolton published observational proof of their existence in Nature Physical Science 240, 124–127 (11 December 1972)]; they have spawned science-fiction plots about time travel and secret passageways to other dimensions, and they have fascinated anyone who ponders what the heavens might hold; a black hole occurs when a gigantic star implodes to become extremely small and dense, resulting in an immensely powerful gravitational pull; “Things can go in, but they can’t go out,” Bolton explains; even light cannot escape from a black hole, making it invisible from the outside. He grew interested in a possible binary system involving a giant blue star called HDE226868 and something else that was emitting powerful X-ray signals. He thought this invisible X-ray source, dubbed Cygnus X-1 (because it was in the constellation of Cygnus, the Swan), was likely a neutron star.

Source: http://magazine.utoronto.ca/feature/astrophysics-tom-bolton-black-holes-research/