Mini-Neptunes can Lose gas and Turn Into Super-Earths

An artist's illustration of the mini-Neptune TOI 560.01 losing its atmosphere and transitioning to a super-Earth. Image Credit: Image Credit: Adam Makarenko (Keck Observatory)

Can one type of planet become another? Can a mini-Neptune lose its atmosphere and become a super-Earth? Astronomers have found two examples of mini-Neptunes transitioning to super-Earths, and the discovery might help explain a noted “gap” in the size distribution of exoplanets.

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