In another space-filled week, we’ve got a lot of supernovae, one an ancient science mystery and the other an unexpected discovery.
About the institutional change at NASA Artemis has rearranged itself in producing a major push toward lunar travel — thanks in large part to the success of SpaceX.
This week it revealed the two oldest galaxies in the universe, covered behind a wall of nearly immobile cosmic dust, and their discovery that we know about the first moments of the universe’s existence.
Finally, a new study of Martian meteorites, in search of our life elsewhere in the galaxy, denounces the need for us to become a barren desert planet before the end of the formation of the Red Planet.
Mars will always die
Mars was destroyed from the start
Let’s spread the bad news first: Fees are collected from the beginning of Tuesday A dry, bony, dusty desert planet due to its size.
In a new study examining potassium deposits on Martian meteorites, a team from Washington University in St. Louis (WUSL) has found a strong correlation between a space object’s size and velocity. Water and other disturbances were lost over time.
“The fate of Mars has been decided from the beginning,” said Kun Wang, associate professor of Earth and Planetary Sciences at WUSL. “Rocky planets are likely to retain enough water to carry out threshold and plate tectonics for their size requirements. It weighs more than Mars.”
Wang and his fellow researchers believe that measuring a planet’s size should be an important factor because liquid water (which we consider) is essential to life on other planets in search of life on other planets.
NASA gives the green light to private space stations
NASA restructures its space mission directorate and gives the green light to private space stations
NASA released the news this week announced that it will give the green light Private space companies have begun building their own space stations in low orbit, which is expected to save NASA at least $1 billion annually.
The International Space Station is set to complete its mission by the end of the last decade, and with the success of SpaceX, NASA hopes that business initiatives can tackle the problem of managing Earth orbits. This will allow NASA to send its next challenges to the Moon, establish a permanent base there and focus on the bigger challenges afterward.
In this sense, NASA is splitting the team’s responsibility for space operations into two new directors to better manage its increased responsibilities.
The mystery of the Chinese guest star has finally been solved
The mystery of the 900-year-old Chinese guest star has finally been solved
In the year 1181 AD, Chinese and Japanese astronomers recorded the sudden appearance of a new star in the night sky, six months before its disappearance. Known as “Chinese guest star”Astronomers have long thought a supernova shining like Saturn on medieval astronomers, but unlike other known supernovae of the past millennium, the location of this supernova was avoided until this week.
A new study has now placed this supernova in the Pa30 molecular cloud, and using a wave of expanding material in the cloud — traveling at 1,100 kilometers per second or about 2,500,000 miles per second — as a guide, they worked backwards into its shape. Nearly a thousand years ago, the supernova was laid out just in time to be observed by astronomers.
“This is the only event where we can read both the remaining nebula and the connected star [that triggered the supernova]”There is an explanation for the explosion,” said Albert Gigstra, a professor at the University of Manchester who led the astronomical team that solved the mystery.
Ancient galaxies obscured by space dust
Two newly discovered galaxies show that the early universe was full of galaxies from the beginning
How many astronomers search for the oldest galaxies in the universe, and think they have a good idea where to find them, but Newly discovered pair of galaxies Whatever the symptoms, they feel misunderstood.
Two galaxies are the most distant – and therefore the oldest – galaxies ever discovered, but the most surprising thing is that they are completely invisible due to the cosmic dust that obscures our view of them.
“These new galaxies are not very rare, but only missed because they are completely obscured by dust,” said Yoshinobu Fudamoto, an astronomer at Waseda University and Japan’s National Astronomical Laboratory. vaccuum cleaner. “We may have lost one in five galaxies in the early universe.”
If this is true, then the early days of the universe were much more active and vibrant than we initially thought, which would have an impact on the development of astronomical models for our universe today.
A supernova digs a hole in the Milky Way
A hole 500 light-years wide may have been cut into a large supernova
Finally, in a new study released this week, researchers trying to create 3-D maps of Perseus and Taurus molecular clouds have found a gap near the named galaxies. The crater that is 500 light years old appears to have been extruded from the Milky Way.
“Hundreds of stars are forming, or are already forming, on the surface of this giant bubble,” said Shmul Bialy, lead author and graduate researcher at the Institute for Theory and Computation at the Harvard Astronomical Center. We have two theories – a supernova that went to the center of this bubble and expelled the gas, which we now call a “supersonic Perseus-Taurus,” or a series of supernovae that occur over millions of years over time. “
The spherical hole is located exactly between two molecular clouds, indicating that the two large star-forming structures were once a single cloud, which essentially splits in two.
“We’ve been able to see these clouds for decades,” said Kathryn Zucker, a graduate researcher at the Harvard Astronomical Center who led a separate study related to the 3D mapping process the researchers use. depth or thickness
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