The largest star known to man is 1,700 times larger than the sun.
1.
If you put yours finger on a star in the sky, you are avoiding photons that have traveled the Earth without trouble for millions of years finally entering your eye.
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Photons are a basic unit of light. They are made in the center of a star and will travel for millions of years before reaching Earth. When you block a star in the sky with your finger, you are actually blocking the entry of millions of years of photons into your retina.
2.
You know colder place in the known universe is? What is there the hottest? Well, they’re both right here on Earth.
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Well, them they were. The coldest recorded temperature in the universe was created here in a laboratory on Earth (-273 degrees Celsius, or absolute zero) and the Large Hadron Collider has also managed to create the highest recorded temperature since l ‘universe began with the Big Bang (5.5 trillion kelvin).
4.
And in about 4.5 billion years, the The Milky Way is expected to collide the Andromeda galaxy, our nearest galactic neighbor, to form a giant elliptical galaxy.
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6.
And our big red neighbor, Jupiter, is twice as large like all the other planets in our solar system combined!
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Only one section of the planet’s surface – a giant 150-year-old storm called the “Great Red Spot” – is in itself twice the size of Earth.
7.
There is a planet in our galaxy where the temperature during the day can exceed 1,000 degrees Celsius and possibly it rains the molten glass horizontally at about 4,500 mph!
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The planet, known as HD 189733b, was seen with NASA’s Hubble Space Telescope and has a cobalt blue color.
8.
Scientists think they have found one parallel universe in a void measuring a billion light-years in diameter.
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It is a rather controversial hypothesis, but the void, which is empty of all matter, can be a test of a multiverse. Discovered in 2007, it is 40 times larger than the largest gap previously recorded.
9.
We know, then, that light takes a long time to travel through space, right? Well, there really are some parts of the universe we cannot see because the light from there has not yet come to us.
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The universe is so extraordinarily vast that the light from these galaxies, which formed during THE GREAT BANG, has not yet reached us.
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Although, soon the James Webb Space Telescope it will allow us to explore galaxies that formed at the beginning of the universe and observe stars forming planetary systems.
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12.
Did you know that there are loved ones? 500,000 pieces of space debris floating above the Earth and moving at speeds of up to 17,500 mph?
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Space debris is basically everything we let float in space carelessly: pieces of rockets, dead satellites, what do you have?
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Most larger satellites have survived the re-entry fire and, in fact, land more often in the ocean (uf) or in some remote area. There is a whole team of researchers dedicated to tracking space debris and controlling the risk of colliding with Earth; as far as we know, no one has died from being hit by an old satellite.
14.
But here’s the question, there is phenomenon such as The Kessler effect, in which a single destructive event in Earth’s low orbit could cause all satellites to break into smaller and smaller fragments until the planet is surrounded by a massive cloud of shrapnel.
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This would make having to leave Earth almost impossible.
15.
There is one supermassive black hole rascal accelerating through space at about five million miles per hour.
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Normally, all galaxies contain a black hole, but this has been ejected from their home galaxy, 3C 186. It is probably the result of the collision of two galaxies, which may have joined the two black holes. Astronomers predict that in 20 million years it will leave its galaxy and travel the universe forever.
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The spacecraft was launched in 1977 to study Jupiter and Saturn and is now on its second mission outside the solar system. It will now drift through interstellar space forever. The Earth will it is probably vaporized by the sun a few million years from now, meanwhile Voyager 1 will probably still move through space.
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Venus today is a living hell. It has a stifling atmosphere of carbon dioxide and virtually no water vapor; temperatures there reach 462 degrees Celsius! But climate modeling has suggested that ancient Venus might have oceans and a dry land pattern like ours. Several factors, including the water-land ratio, and the idea that clouds potentially protected Venus from strong sunlight, suggest that the planet may have been habitable once.
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This is known as “cold welding,” and it occurs because the atoms of both individual bits do not know that they belong to different pieces of metal, so they bond together. This does not happen on Earth because there is always air or water separating the pieces.
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These rogue planets do not orbit a star, so it is quite difficult to spot them, in fact we do not know if there are any nearby. Statistically speaking, however, they are not close enough to worry about and we are really a pretty small target given the size of the solar system.
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According to Neil deGrasse Tyson, dark matter is the oldest unsolved mystery of modern astrophysics. In fact, maybe not even to be it matters! Basically, the amount of gravity in the universe is not equal to the amount of observable mass: planets, stars, galaxies, comets, black holes, and dark clouds. So scientists propose that there is a lot of unobservable or “dark” mass in the universe, which is the source of all this gravity.
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This idea is based on a complicated theory known as vacuum decay – basically a self-destruct button for the universe. For now, it’s just speculative, but it’s about whether the universe is in a true or false void: a true void is stable, but a false void is not. If a random quantum fluctuation allowed a false vacuum to release its potential energy, it would create a bubble of true vacuum that would expand at the speed of light and suppress all the things it touched. Destruction would be instantaneous, and depending on where it happened in the universe, we may never see it coming. Remember, this is just a theory!
22.
And finally, this is not a fact per se, but have you thought about the possibility that we have already sent a message to an alien race in the distant past and it is still making its way to them?
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The space is huge, we have already established it and there is every chance we sent a message into space thousands of years ago and forget about it (think about how societies change over time) . We might still be waiting for this message to arrive, or wait for a response to reach us again. In this sense, we would constantly introduce ourselves to anyone else who was there …
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