“Jupiter’s younger sibling’

The movement of the extrasolar planet AF Lep b (white spot at about 10 o’clock) around its host star (center) can be seen in these two images taken in Dec. 2021 and Feb. 2023. Images were collected using the W. M. Keck Observatory’s 10-meter telescope in Hawaiʻi. (KyleFranson/University of Texas at Austin)

Maunakea, Hawaii – Astronomers using W. M. Keck Observatory on Maunakea, Hawaii Island have discovered one of the lowest-mass planets whose images have been directly captured. Not only were they able to measure its mass, but they were alsoable to determine that its orbit is similar to the giant planets in our own solar system.