Two studies cast doubt on existence of exomoon

Two teams working independently have looked at the possibility of an exomoon circling the exoplanet Kepler-1625b, which orbits the star Kepler-1625. They report little to no evidence supporting its existence. One team, led by Laura Kreidberg, has written a paper describing their work, which is posted on the arXiv preprint server. Another team led by René Heller published a paper in the journal Astronomy Astrophysics. The team that announced possible evidence of the exomoon last year, led by Ale...