Astronomers Find the First Moon Orbiting an Exoplanet in PDS 70 System!

The PDS 70 star system is home to at least one moon, the first exomoon conclusively found in another solar system.

ALMA observations of the first moon definitely found in another solar system. Image credit: ALMA (ESO/NAOJ/NRAO)/Benisty et al.

Astronomers using the Atacama Large Millimetre/submillimeter Array (ALMA) report finding disks of dust and gas surrounding an exoplanet for the first time. This finding provides the first clear evidence for a moon forming around a…