But in recent decades, astronomers have located 14 Tatooine-like planets in the universe. Technically known as circumbinary planets, these orbit pairs of stars.
Researchers have to watch for small changes in the amount of light a star emits to detect a planet passing in front of it.
Things get more complicated when there are two stars instead of one.
“Transits will not happen with the same interval over the same star. The planet may transit one star and then transit the other before transiting the first star again, and so on.”
For the first time, researchers were able to spot a planet by using roughly a month’s worth of data from TESS.
They saw that TIC 172900988 b passed in front of each of its stars in about five days.
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