A newly discovered exoplanet HD 131399Ab has 3 Suns. The planet allegedly is believed to be a relatively young 16 million years old. It’s about 340 light-years from Earth in the constellation Centaurus, according to NASA. A study detailing the exoplanet was published this week in the journal Science.
Exoplanets are planets that orbit a star other than our sun. With an orbit that takes 550 years, HD 131399Ab’s seasons last longer than a human lifetime. The exoplanet orbits the largest of its three suns, and the two smaller stars form a binary system also in orbit around the largest sun. READ MORE