On January 6, NASA announced that it had detected an Earth-sized planet, TOI 700 d, 100 light-years away from Earth that could be capable of hosting life. The same mission also led to the discovery of a rare planet with twin suns courtesy of a 17-year-old intern.
As CNN reports, high school student Wolf Cukier was combing through data collected by NASA's Transiting Exoplanet Survey Satellite, or TESS, when he noticed something strange about one binary star system. The system TOI 1338 consists of two stars that orbit each other once every 15 days. When the smaller of the two stars passes across the larger one, it's known as a stellar eclipse. But one signal that had been flagged as a stellar eclipse wasn't an eclipse at all; just three days into his internship at NASA's Goddard Space Flight Center, Cukier had found a planet orbiting the two stars.
The planet, since dubbed TOI 1338 b, is like a real-life version of Luke Skywalker's home planet Tatooine from the Star Wars movies. It's located roughly 1300 light-years away in the Pictor constellation and is somewhere between Neptune and Saturn in size. Twin-starred planets are rare, and this marks this first one detected through NASA's planet-hunting TESS mission.
TESS launched in 2018 with the goal of finding new planets outside our own solar system. Planets are typically discovered by recording stars over time and looking for dips in their brightness that indicate passing planets. This system becomes complicated when dealing with binary star systems, as dips in light caused by a planet in transit can get confused with an eclipsing star and vice versa. Without Cukier's keen eye, this latest discovery may have gone undetected.
It may have the same number of stars as Tatooine, but the similarities TOI 1338 b shares with the planet from Star Wars end there. So far, TOI 700 d is the only planet discovered by TESS that has a chance of being habitable.