You could drown in your spacesuit
Spacesuits usually store water for cooling purposes and to allow astronauts to recover quickly if they become thirsty during spacewalks. exist. But spacesuit accidents can happen, too. In the event of a spacesuit accident, anyone is likely to drown in their spacesuit.
For Italian astronaut Luca Pamirno, this is a frightening fact. While Pamirno was doing his engineering work, he suddenly felt a pool of water begin to swell behind his neck. Gradually, the water reached his nose. Fortunately, his colleagues helped guide him back to the safety of the airlock. At one point, Pamirno even considered taking the desperate measure of releasing a safety valve near his ear—a step that would have killed him moments later.
The birth and death of stars
Although the birth and death of stars do not happen suddenly, this process does Evolving quite frequently. By taking advantage of observed star formation and supernova events in the Milky Way, astronomers estimate that 275 million stars are born and die every day throughout the visible universe. Over the course of a year, this amount totaled over a hundred billion.
Meteorites may hit the earth without warning
We forgot one thing, if one is big enough Meteorites are rushing towards our earth, and we will step into the footsteps of the dinosaurs at any time. Fortunately, science has a technology that can give the world some early warning when comets and meteors are detected in our atmosphere. Oh, great science, I thank you!
But that hasn’t stopped smaller meteors from doing incredible damage to us over the years. Like in 2013, Russian citizens felt the shock and hundreds were injured when a meteor shattered into pieces over the Ural Mountains and formed a meteor shower near the ground. Any larger meteorite could turn these injury statistics into a death toll.
Amazing Neutron Stars
A pulsar is a magnetized neutron star that spins incredibly fast. And it can also emit a beam of radiation somewhat similar to a lighthouse. The fastest known pulsar is PSR J1748-2446ad, located about 18,000 light-years away in the constellation Sagittarius. Although it is an average size for a neutron star, it can reach an astonishing 716 revolutions per second. That's almost a quarter of the speed of light, exceeding what's theoretically possible.
Pulsar (Source: bkimg)
A guide neutrino
2017 The single high-energy neutrino that struck the Earth on September 22 was itself not that ordinary. Physicists at the IceCube Neutrino Observatory in Antarctica see neutrinos of similar energy levels at least once a month. But this one was special because it was the first neutrino to reach Earth with enough information about its origin. It points the direction of its origin to astronomers' telescopes. Astronomers discovered that it was thrown towards Earth 4 billion years ago by Frarinbrazal, a supermassive black hole at the center of a galaxy that has been consuming surrounding matter.
Neutrinos (Source: bkimg)
A super appliance
In the center of a galaxy called 3C303 , has a supermassive black hole, like most galaxies. But what makes this black hole so special is the magnetic field surrounding it, which generates the largest electrical current ever recorded.
This current was discovered at the University of Toronto, and the measured current was an absolutely astonishing 10^18 amperes. SI unit of electric current. To put this into perspective, this means that this current is equivalent to more than a trillion lightning bolts on Earth combined.
In other words, this electric current is much more powerful than making your hair stand up.
Lightning itself can be a pretty scary thing, especially at close range. Anyone who has ever been in the middle of a severe storm can say that this is true. With this in mind, even the most violent storms on Earth would be child's play to this massive power that transcends the stars.
A giant black hole is wandering through space (at a speed of three million miles per hour)
Apparently, A supermassive black hole a million times more massive than the sun is hurtling through space at three million miles an hour. Not a big shot? According to reports, the black hole is named B31715425 (I guess this black hole may sound a little less apocalyptic) and is currently 2 billion light-years away from us.
Researchers believe that due to the unconstrained nature of the black hole, it may have collided with another galaxy, rather than connecting the galaxies around it to the galaxy it collided with. Merge together, but tear apart and go your own way. These are all known naked or rogue black holes, and there may be more like them, ready to start a galactic turf war!
Our galaxy is gradually being squeezed Pressure
It sounds like something out of a George Lucas script, the "undercurrent" (as scientists describe it) could be our galaxy's slow (but likely) The mysterious power behind death. Beyond the limits of our known universe, where light cannot yet reach—there appears to be a powerful vacuum of space that sucks in galaxies one at a time.
NASA research scientists in Maryland have discovered a series of galaxy clusters moving across the sky at alarming speeds. Experts reasoned, "Unless they are experiencing strong pulls from something beyond the boundaries of the universe, there should be no reason for galaxy clusters to move at such alarming speeds." Hopefully NASA can give us a hint when we run out of time , because some of us still have unfinished boxes...
Milky Way (Source: bkimg)
Shocking!
The Sun accounts for 99.86% of the mass of the solar system. It's so big that you could squeeze 1.3 million Earths inside.
The horror of pressure relief
In June 1971, the three astronauts of Soyuz 11 returned to Unfortunately, Shi died due to pressure relief due to valve failure. But what is a decompression, and what makes astronauts die so pessimistically? This story is told by a man who survived a pressure release.
He is a technician working in a vacuum chamber at the Hughes Johnson Space Center. He accidentally deflated his spacesuit and lost consciousness within seconds. The man later reported that his last memory before losing consciousness was water starting to boil on his tongue. So disgusting!
The symptoms of pressure relief can vary greatly, depending on how long you have been exposed to extremely low pressure. If you're exposed for too long, your lungs will become inflated (and will explode if you hold your breath), and the blood will begin to boil in the main veins and cause blockages. But if you're really lucky, the lack of oxygen will cause you to black out and die before you know what's hurting you or causing you pain. Wow.
A rogue planet wants to play pinball with Earth
If you have ever seen a movie called Melancholy movie, then you will know what this sentence means. Most planets do what they want and stay in their own little orbits (like the eight peaceful planets in our solar system). Unfortunately, some may be pushed out of their orbit, and perhaps, they want to come into our orbit.
What is extremely scary is that there are many rogue planets like this in our galaxy, and their size is said to be equal to the size of Jupiter. Oh, by the way, there are about 400 billion stars in our galaxy. Four hundred billion Jupiter-sized balls, searching for their galactic territory. Alas!
Super solar storm could leave us completely in the dark
Predictions for future weather? With the possibility of global blackouts, maybe it's sunny. Solar storms caused by random solar flares from the sun can happen at any time, and if they did, the damage could plunge us all into darkness.
Back in July 2012, the most powerful solar monster in more than 150 years narrowly missed us. A scientific study published later that year described how coronal mass injections (CMEs) tear apart our orbit. If this eruption had happened a week ago, the Earth would actually be in the emission line and particles would be flying towards us, cutting off our power.
Sun (Image source: bkimg)
Moon dust is deadly
Future lunar tourists visiting Earth faithfully Satellites face several dangers. That's the lack of oxygen and the risk of your body exploding if your suit is punctured. However, one of NASA's biggest headaches is lunar dust.
Dust particles cling to everything from space suits to shoes. In 1972, when Apollo 17 astronaut Harrison Schmidt was walking on the moon, he inadvertently breathed in some lunar dust. His symptoms were later nicknamed "lunar hay fever."
In 2018, scientists determined that inhaling lunar dust would be terrible in reality; saying "dust" is a bit inappropriate when talking about the moon, it's not on Earth Powdered substance found. Lunar dust is sharp, never eroded, and is mostly composed of meteorite fragments.
Real lunar soil isn't easy to come by, but NASA has a fake dust sample that's close to the real thing. When exposed to human cells in the laboratory, the easily inhaled dust can cut and destroy up to 90% of lung and brain tissue within twenty-four hours.
What is frightening is that the surviving cells have such severe DNA damage that they may develop into cancer and neurodegenerative diseases
Moon surface (Source: bkimg)
Black holes wandering around
Black holes have always been bad news; But here's a way to make them even worse: send them flying through space. This is happening to an extremely large black hole, and scientists can't quite figure out why.
In 2012, NASA discovered that it was very possible that a black hole was being kicked out of its galaxy. It was observed speeding away at "seven million miles per hour." It's very strange to have a black hole thrown like an unruly bar owner. But think about how big a black hole is. As Francesca Swano, an astronaut who led research into the discovery of a black hole, explained, the black hole was millions of times more massive than the sun, but the galaxy was sending it away as if nothing existed. It's like lifting an elephant with your pinky finger and throwing it to the next state.
There are some theories as to how this phenomenon occurs, although none of these theories have been proven. Silvano and her team theorized that the two galaxies (and the black holes in both galaxies) merged; the resulting gravitational waves gave the now single black hole a huge boost, causing it to escape. Meanwhile, another theory involves a clash of three supermassive black holes, with the lightest being kicked out of the party.
There is also a theory that there are two supermassive black holes, and the black hole that seems to be leaving is actually arriving, but it is attracted by the second black hole. Current data supports the gravitational wave theory, but nothing has been proven beyond the nightmare scenario of how a massive, invisible sucker of matter could accelerate through space.
Black hole (Source: ivsky)
Dark energy
In 1998, Hubble Telescopes have discovered that the universe is expanding much faster than before. Since then, NASA and other colleagues and friends have been trying to figure out the cause, but to no avail. They have some theories, such as what NASA calls "some kind of strange energy fluid filling space." Although this "energy fluid" has not been confirmed or denied, they still call this "energy fluid" dark energy, just like a couple naming their child before giving birth.
So, what exactly is "dark energy"? We really don't know. Really, what we do know today is that there is a lot more energy than light. NASA estimates that there is about sixty-eight percent dark energy in the universe, roughly the amount of energy that Darth Vader had when he began to question his loyalty to the Emperor. Dark energy’s close relative, the almost completely mysterious “dark matter” accounts for another 27 percent of the universe. The remaining five percent is "light" energy, or the stuff we can see. Yes, 95% of the universe is invisible to us, so go to sleep!
Part of Einstein's theory of gravity involves a "cosmological constant," the idea that seemingly empty space is filled with its own energy. This energy will be generated by space, so as the universe expands and creates more space, the extra energy will make the universe move faster. But since we don't know how space generates its own energy (interstellar photosynthesis?), this is just one of many unproven theories.
Author: quora
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