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The NASA telescope discovers three fascinating planets hiding around a nearby star



  tess-30

TESS before the start.


NASA

NASA's Transiting Exoplanet Survey Satellite (TESS) has achieved another scientific triumph with the discovery of three fascinating planets hanging from a nearby star. One is a super-earth, slightly bigger than our own planet. The other two are Neptune-like exoplanets not found in our own solar system.

The star is known as "TESS Object of Interest 270" or TOI 270 for short. His more formal name is "UCAC4 1

91-004642", but that's a mouthful. The star is 40% smaller than our Sun and is also about a third cooler. It hangs 73 light years away, which qualifies it as a neighbor.

TESS found the fascinating planet of the TOI 270, looking for a dimming of the host star, pointing to a planet passing around it.

The closest planet to the star is about 25% larger than Earth and probably rocky. This "super earth" is called TOI 270 b. Do not expect to send colonists there. NASA described it as "oven hot" due to its proximity to the star.

The other planets TOI 270 c and TOI 270 d may be closer to the gas giant Neptune. "Planet c and d are best described as mini-neptune, a type of planet that is not found in our own solar system," NASA said.

This NASA infographic shows how the planets of the TOI 70 are compared to the Earth Space Center / Scott Wiessinger

The discovery of the exoplanets is only the beginning. "TOI-270 will soon enable us to investigate this" missing link "between Earth-like planets and gas-dominated mini-Neptunes, since all of these types were formed in the same system," said Maximilian Günther, lead author of a paper published in the journal Nature Astronomy on Monday.

TESS was launched in 2018 and was on a series of exoplanet discoveries, including the observation of a three-sun planet TOI 270 after the launch of NASA's next generation James Webb Space Telescope (19459015) (2021) liquid water and could possibly sustain life. Do not count TOI 270 on this front. Other planets in the system may be waiting to be discovered.






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Originally posted on July 29, 10:39, PT


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