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Astronomers have observed the explosion of a white dwarf for the first time
In July 2020, a group of European scientists using the German eROSITA X—ray telescope recorded an unusually bright explosion of a white dwarf – it generated a huge fireball with a temperature 60 times higher than the temperature of the Sun. White dwarfs are extremely dense stars that have lost a significant part of the…
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Moon dust
In 1972, Jack Schmitt and Gene Cernan were so carried away by the role of the last people on the moon in history that they forgot to “wipe their feet” before entering their lander. Which, in general, is quite surprising, because they already knew how terrible this moon dust is. During the mission, she had…
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How to defeat weightlessness in a spaceship? Is it possible to implement this?
If we discard all sorts of fantastic artificial gravity generators, then there is one way – to use centrifugal force, realizing the rotation of a segment of the ship, or even the entire ship. However, the gravity there will be somewhat strange – local at each point, i.e. crew members will be able to walk…
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Mars Probe InSight mission to end this year due to power problems
The mission of the InSight Mars probe will end this year due to power problems, said Thomas Zurbuchen, head of NASA’s Directorate for Scientific Missions. “NASA’s InSight Mars lander is gradually losing power. It is expected that he will finish conducting scientific research this summer. By December, experts expect that the device will stop working,…
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The winds emitted by supermassive black holes in the first billions of years of the universe’s existence were much stronger than modern ones
They were so powerful that they actually slowed down the growth of the black holes from which they emanated. Using the X-shooter receiver mounted on the ESO Very Large Telescope, astronomers studied 30 quasars observed in an era when the age of the Universe was from 500 million to 1 billion years. It turned out…
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If the Earth was turned to the Sun with only one side, would we be able to exist?
If the Earth were under the action of tidal capture, then there would be intense heat on one side, and intense cold on the other. In either case, the existence of higher forms of protein life would be impossible. Nevertheless, in the twilight zone, as shown in another answer, the temperature would be average, i.e.…
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The danger of space debris
Space debris falls to Earth from time to time. Large objects that move in sufficiently low orbits may eventually enter the atmosphere. Their speed slows down, they fall and partially burn up. And already individual fragments reach the surface of our planet. So Lottie Williams suffered from the wreckage of one of the stages of…
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Astronomers have discovered four new brown dwarfs
Despite the fact that brown dwarfs emit very little energy compared to ordinary stars, astronomers have managed to identify quite a few such objects to date. However, their findings in star systems are still rare. The more interesting is the recent discovery made by a team of European astronomers. They managed to find four previously…
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What alternative theories of the origin of the universe do you know?
In fact, there is only one alternative theory of the Big Bang – this is the theory of an eternal and infinite Universe in eternal cycles: gas-stars-gas-…, stars- white dwarfs, neutron stars – gas – …, hydrogen – helium – heavy elements – hydrogen-… . The theory of the divine creation of the Universe is…
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A magnitude 5 earthquake has occurred on Mars
On May 5, the most powerful Mars earthquake was recorded on Mars for all the years of observations. Its magnitude reached 5 points on the Richter scale, which became a record after a push in August last year with an amplitude of 4.2 points. A little later we will post an audio recording of the…
