NASA’s Satellite Survey Transiting Exoplanet (TESS) has proven three so-called ‘hot worlds’ that could be useful examples to teach humanity how an atmosphere shapes and evolves over time.
The three hot worlds, each slightly larger than our own, were found orbiting a much younger version of our sun called the TOI 451, located about 400 light-years away in the constellation Eridanus. .
The star boasts 95 percent of our solar mass, despite being 12 percent smaller and emitting 35 percent less energy. It also orbits five times faster than our sun, making for a much more intense environment for its advanced star system.
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The farthest planet revolves around three times closer than Mercury ever came to our Sun, so each of these worlds is incredibly hot and almost certainly uninhabitable. as we know it, with atmospheric temperatures ranging from highs of 2,200 degrees Fahrenheit (1,200 degrees Celsius) to ‘lows’ of 840 F (450 C) in the outside world.
Scientists believe that despite the intensity of the heat and the star’s orbit near them, these planets still retain the atmosphere and could be useful examples for study. in the shape and development of atmosphere over time, although in real conditions.
The planets ’signatures were first discovered in December 2018 and were re-verified by several studies, using some of the most powerful telescopes and observatories on Earth.
The hot worlds were discovered in a stream of Pisces-Eridanus stars, which are less than three percent of the age of our solar system, spanning a third of the sky visible from Earth.
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NASA researchers suspect the system holds a cool disk of dust and rocky debris, and two stellar companions may be dancing around each other in an orbit far beyond the planets. This makes it a useful example for the study of the evolution of nascent star systems, which may include visions for ourselves.
“It’s only 120 million years old and just 400 light-years away, allowing us to take a closer look at this young planetary system,” said Elisabeth Newton, associate professor of physics and astronomy. experience at Dartmouth College in New Hampshire, USA, which led the research.
“And with three planets between two and four times the size of the Earth, they make very promising targets for testing theories about how a planet’s atmosphere grows,” she said.
This discovery is expected to provide additional insights into how atmospheres form around nascent planets in the universe, which could help improve human research for both worlds. cultivate for settlement and sensible outdoor life.
“TESS data will continue to allow us to push the boundaries of what we know about exoplanets and their systems for years to come,” said Jessie Christiansen, deputy director of science at NASA’s Exoplanet Archive.
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