NASA's TESS Discovers Third New Planet With Longest Orbit Yet

NASA found what is likely a water planet not too far from our solar system.

The new planet, which is called HD 21749b, was announced on January 7.

“We think this planet wouldn’t be as gaseous as Neptune or Uranus, which are mostly hydrogen and really puffy,” MIT researcher Diana Dragomir explained.

“The planet likely has a density of water, or a thick atmosphere.”

HD21749b likely has a surface temperature of approximately 300°F, which is a surprisingly cool temperature for how close the planet is to its star, which scientists say is comparable to our sun.

It orbits its star every 36 days, compared to the other two exoplanets that TESS has identified.

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