This scorching ‘super-Earth’ exoplanet is one of the most massive ever discovered

As astronomers add to their known population of distant planets — called exoplanets — they expand their understanding of how Earth’s rocky relatives appear around other stars. And their surveys often come across oddballs, like one newly-discovered planet coated in molten magma with a “year” that only lasts half a day.

The discovery, called TOI-1075 b, was spotted in observations from NASA’s Transiting Exoplanet Survey Satellite (TESS) spacecraft. Data from this four-yearold mission revealed that TOI-1075 b has a superheated surface of about 1,922 degrees Fahrenheit (1,050 Celsius). These extreme conditions occur because of the planet’s proximity to its parent star, a small, red-orange star about 200 light-years away from Earth. But in addition to the planet’s scorching climate and ultra-short orbit — which takes just 14.5 hours — it’s fascinating for another big reason: TOI-1075 b is one of the most massive of its exoplanet class.

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