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Confusing observations of distant galaxies change what cosmologists know about the universe every day. The strange substance called dark matter may never have existed. Here are all the details.

That’s one of the possible conclusions of a new study published June 20 in The Astrophysical Journal Letters. The finding “raises questions of an extraordinarily fundamental nature,” said astronomer Richard Brent Tully of the University of Hawaii at Manoa, who was not involved in the study. Astronomers suspected dark matter existed because of the way stars and other visible material at the visible edge of the galaxy rotate. The rotation speeds of objects far from the galactic center are the bright stars seen in telescopes. article much higher than it should be considering the amount. According to physicists’ current understanding of gravity, this means that a huge reservoir of invisible matter must be tugging on these stars.

Strange galaxy observations challenge ideas about dark matter

The new results are based on the fact that massive objects distort the fabric of space and time. Galaxies consist of enormous amounts of visible stars, gas and dust, as well as – according to theory – a huge halo of invisible dark matter. This means that light will be bent and distorted as it passes by a galaxy; This is an effect known as gravitational lensing. Knowing this, astronomer Tobias Mistele and his colleagues from Case Western Reserve University in Cleveland revealed through their research that dark matter, which was thought to exist from the beginning, may not actually exist. So we could be wrong about everything we know.

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Wearable Technology

Scientists designed spacesuit that can turn urine into drinking water

A spacesuit inspired by science fiction movies that turns urine into drinking water, designed by scientists, could enable astronauts to take long spacewalks in their explorations. Here are all the details.

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A spacesuit inspired by science fiction movies that turns urine into drinking water, designed by scientists, could enable astronauts to take long spacewalks in their explorations. Here are all the details.

Modeled on the “stillsuits” from the sci-fi classic Dune, the prototype can collect urine, purify it, and return it to the astronaut via a drinking tube within five minutes. The suit’s creators hope that later this decade the suit could be used in NASA’s Artemis program, which focuses on learning how to live and work on another world for long periods of time. “The design incorporates a vacuum-based external catheter that provides a continuous supply of drinking water with multiple safety mechanisms to ensure the astronaut’s well-being,” said researcher Sofia Etlin of Weill Cornell Medicine and Cornell University.

Scientists design spacesuit that can turn urine into drinking water

NASA is preparing for the Artemis III mission in 2026, which aims to land a crew on the south pole of the Moon, stating that it aims to launch crewed missions to Mars by the 2030s. Pee And Sweat is already routinely recycled on the International Space Station (ISS). “Astronauts’ beverage bags in their suits currently contain only one liter of water,” Etlin said. “This is insufficient for planned longer-duration Moon spacewalks, which could last 10 hours or even up to 24 hours in emergency situations.”

Other garments used so far are reportedly prone to leakage, uncomfortable and unhygienic; This causes some astronauts to limit their food and drink intake before spacewalks and others to complain of urinary tract infections (UTIs). “It is normal for old clothes to leak,” say scientists. “Astronauts tell us that at a certain point they could no longer tell whether it was urine or sweat.

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Science and Space

NASA’s search for habitable planets continues

While the James Webb Space Telescope’s search for habitable extraterrestrial planets continues, NASA is on its way to finding evidence of alien life with a new space telescope.

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While the James Webb Space Telescope’s search for habitable extraterrestrial planets continues, NASA is on its way to finding evidence of alien life with a new space telescope.

An astrophysicist working at NASA stated that the Habitable Worlds Observatory (HWO) project will contribute to new developments in space life by 2050. NASA’s Habitable Worlds Observatory (HWO) will launch in 2040 and will be a telescope specifically designed to find signs of extraterrestrial life. Astrophysicist Jessie Christiansen believes HWO could find evidence of alien life within our lifetime. “I believe that within our lifetime, HWO will see a signal of what we think is life in the atmosphere of a rocky planet in the habitable zone of a Sun-like star,” Christiansen said.

NASA

Three NASA contracts worth a total of $17.5 million will go into effect this summer and will build HWO’s next-generation hardware and the code needed to collect nearby exoplanet data in rich new detail. This new hardware and software will allow HWO to more effectively search for signs of life on Earth-like planets.

Christiansen notes that HWO’s potential discoveries could launch not only a scientific but also a philosophical, religious and social revolution. The discovery of extraterrestrial life could have a profound impact on human history. Christiansen, “In life, in religion, in philosophy and could start a revolution in science,” he said. But he added that the public reaction may be more muted than expected: “It might make headlines for a day, then everyone goes back to what they were doing.”

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NASA’s Habitable Worlds Observatory (HWO) is a promising step towards finding signs of extraterrestrial life. HWO is scheduled to launch in 2040, and this new telescope could help humanity understand its place in the universe. As Jessie Christiansen notes, HWO’s discoveries could find evidence for the existence of life in space within our lifetime, and this discovery could be a major turning point in human history.

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Science and Space

Large meteorites are constantly hitting Mars!

Earthquakes on Mars revealed that large meteorites hit the planet. Here are all the details.

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Earthquakes on Mars revealed that large meteorites hit the planet. Here are all the details.

For some planets, the meteor bombardment never stops. New analysis of data collected by a seismometer on Mars has revealed that space rocks are hitting the red planet much more frequently than we ever suspected. In fact, we’d say Mars handles absolute shocks pretty well. A team of scientists said they estimate the planet gets hit by rocks almost every day. “This rate is about five times higher than the number predicted from orbital images alone,” says planetary scientist and co-lead author Géraldine Zenhäusern of ETH Zurich in Switzerland. “According to our findings, which are consistent with orbital images, Mars is under constant attack.”

Large meteorites are constantly hitting Mars!

Mars InSight revolutionized our understanding of the red planet during the four years it spent observing the planet’s interior until it abandoned the project at the end of 2022. We had previously thought that the planet was probably pretty boring; While InSight reveals numerous tectonic and magmatic activities that previously escaped our attention, of the planet It also revealed its internal structure. The other important thing the sensitive laboratory detected was the slight tremors of rocks hitting the planet’s crust. This has given scientists a new tool to estimate the rate of collisions on the planet, which could help calibrate our understanding of the planet’s geological history. There is so much more to know about space.

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