The hunt is on for exomoons around alien planets and scientists may have just found one

It’s time for another tantalizing glimpse of what alien solar systems might look like.

Astronomers have announced the possible detection of an exomoon, or a moon in another stellar system from our own, the second such candidate observation to date. The signal comes from a star studied by NASA’s now-retired Kepler space telescope, and scientists behind the new research say that their analysis points to a mini-Neptune moon orbiting a planet about the size of Jupiter. If the strange signal does turn out to represent an exomoon, the discovery would give scientists a new understanding of not just this stellar system, but of how such systems work across the galaxy more generally.