Put a Ring on it
ALMA (ESO/NAOJ/NRAO)/Benisty et al.
Nearly 400 light-years from Earth, two new planets are forming inside this giant circumstellar disc.
Inside that, a smaller disc is circling one of the planets.
ESO/L. Calçada, ALMA (ESO/NAOJ/NRAO)/Benisty et al.
Astronomers have long hypothesized that these circumplanetary discs exist, but it wasn’t until recent years that they actually spotted one in the universe.