An exomoon or extrasolar moon is a natural satellite that orbits an exoplanet or other non-stellar extrasolar body. Exomoons are difficult to detect and...

have been no positive confirmations of satellites of extra-solar planets (exomoons); however, some evidence in favour of their existence has been produced...

yet be ruled out; deep exploration would be required for confirmation. Exomoons are not yet confirmed to exist and their detection may be limited to transit-timing...

Tidally detached exomoons, also known as orphaned exomoons or ploonets, are hypothetical exoplanets that were formerly exomoons of another planet, before...

identified as a candidate planet until 2019. In 2021, a candidate Neptune-sized exomoon in orbit around Kepler-1708b was found by astronomer David Kipping and...

and orbits its star every 287.4 days. In 2017, hints of a Neptune-sized exomoon in orbit of the planet was found using photometric observations collected...

Kepler-1625b I, a possible moon of exoplanet Kepler-1625b, may be the first exomoon ever discovered (pending confirmation), and was first indicated after preliminary...

method was performed by the Kepler space telescope. In 2020, a possible exomoon was discovered from transit timing variations. Follow-up observations deemed...

a somewhat smaller scale, a planetary-mass object, planetesimal, moon, exomoon or asteroid that has been disrupted or destroyed by a nearby or passing...

The Hunt for Exomoons with Kepler (HEK) is a project whose aim is to search for exomoons, natural satellites of exoplanets, using data collected by the...