“My first reaction was, there’s no way this can be true.”
Using the Subaru Telescope atop Mauna Kea, Currie and colleagues observed AB Aurigae periodically from 2016 to 2020. NASA’s Hubble Space Telescope also observed the star repeatedly over 13 years. Looking at all these images, the team saw a bright spot next to the star. The bright clump was a clear protoplanet, named AB Aur b, orbiting nearly 14 billion kilometers from its star — roughly 3 times as far as Neptune is from the sun.
In a 2021 false-color image from the Hubble Space Telescope, a disk of gas and dust encircles the star AB Aurigae . Zooming in , a still-forming planet, AB Aur b, appears as a bright spot in the disk, right where a similar spot appeared in 2007 .“For the longest time, I never believed that planet formation by disk instability could actually work,” he says.
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