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An exoplanet is any planet beyond our solar system. Most of them orbit other stars, but some free-floating exoplanets, called rogue planets, are untethered to any star. We’ve confirmed more than 5,600 exoplanets out of the billions that we believe exist.
Researchers confirmed an exoplanet, a planet that orbits another star, using NASA’s James Webb Space Telescope for the first time. Formally classified as LHS 475 b, the planet is almost exactly the same size as our own, clocking in at 99% of Earth’s diameter.
Scientists have discovered six new exoplanets — HD 36384 b, TOI-198 b, TOI-2095 b, TOI-2095 c, TOI-4860 b, and MWC 758 c — this has pushed the total number of confirmed exoplanets discovered to 5,502.
In a system with two known planets, astronomers spotted something new: a small object transiting across the Sun-sized star. This turned out to be another planet: extra hot and Earth-sized.
TOI 700 e, which may also be tidally locked, takes 28 days to orbit its star, placing planet e between planets c and d in the so-called optimistic habitable zone. Newly discovered Earth-size planet TOI 700 e orbits within the habitable zone of its star in this illustration.
EXOPLANETS. No results. NASA explores the unknown in air and space, innovates for the benefit of humanity, and inspires the world through discovery.
NASA's Spitzer Space Telescope has revealed a new exoplanet discovery: the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water.
TESS finished its primary mission by imaging about 75% of the starry sky as part of a two-year-long survey. In capturing this giant mosaic, TESS found 66 new exoplanets, or worlds beyond our solar system, as well as nearly 2,100 candidates astronomers are working to confirm.
The discovery: Two giant planets comparable to our own system’s Saturn orbit a star not unlike our Sun some 700 light-years away. The outer planet has the longest year – 483 days – of any found so far by NASA’s TESS (the Transiting Exoplanet Survey Satellite). It’s also among the coldest.
In a system with two known planets, astronomers spotted something new: a small object transiting across the Sun-sized star. This turned out to be another planet: extra hot and Earth-sized.