NASA Found Three New Planets Around A Neighboring Star

NASA Found Three New Planets Around A Neighboring Star

Nasa's new planet hunter discovered 3 new exoplanets (those outside the Solar system).

"This technique is precisely what TESS was created to search out - small, temperate planets that go, or transit, in front of an inactive host star, one missing excessive stellar exercise, akin to flares", mentioned the research's lead author, Maximilian Günther, in a statement on NASA's website. "With extended follow-up observations, we'll soon be able to determine the make-up of these worlds, establish if atmospheres are present and what gases they contain, and more".

TOI 270 b is the closest planet to its host star, and it's thought to be a bit larger than Earth. Studying Earth's near neighbors could help scientists understand how planets of intermediate diameter form-and the newly uncovered system, named TESS Object of Interest (TOI) 270, might just be the ideal laboratory for the job, study author Maximilian Günther of MIT's Kavli Institute for Astrophysics and Space Research said in a statement. Both celestial bodies like Neptune, but approximately two times smaller than this planet. While the orbit of TOI-270's outer sub-Neptune just barely grazes the edge of the system's habitable zone, where it's theoretically possible for life to exist, new data on the planet's atmosphere suggest it isn't hospitable, reports Dennis Overbye at The New York Times. Since its launch in April 2018, TESS has definitively identified more than 20 exoplanets orbiting stars within about 300 light-years of Earth, with hundreds more awaiting confirmation-and the satellite is only at the midpoint of its mission.

They are some of the smallest and closest exoplanets ever discovered, but it's unlikely any of them are habitable, despite their relatively warm temperatures: their atmospheres are probably too thick and dense.

The scientists noted that the conditions within these planets vary depending on their distance from TOI 270.

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Right now, it's called GJ 357 d and is also being referred to as a super Earth. The system is located 31 light-years away in the constellation Hydra. Insets show information about the planets, including their relative sizes, and how they compare to Earth. "TOI 270 is an excellent laboratory for studying the margins of this gap and will help us better understand how planetary systems form and evolve".

That world is GJ 357 b, a "hot Earth" that orbits 11 times closer to its host star than Mercury does to the sun and likely has a surface temperature of around 490 degrees Fahrenheit (254 degrees Celsius).

TESS is a NASA Astrophysics Explorer mission led and operated by MIT in Cambridge, Massachusetts, and managed by NASA's Goddard Space Flight Center.

"It would be observable by Webb for over half a year, which could allow for really interesting comparison studies between the atmospheres of TOI 270 C and D", she added.

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