Astronomers have re-observed the protoplanet named AB Aurigae b, about 500 light-years away. Active growth of baby planetProtoplanets are baby planets still in the process of forming in stars’ protoplanetary disks of dust and gas. And here we are … our paper reporting the detection of the AB Aurigae b protoplanet with VLT/MUSE spectroscopy!arxiv.org/abs/2508.18351 — Thayne Currie ? AB Aurigae b and planetary formationAlthough AB Aurigae b is still a baby planet, it is huge, about four to nine times the mass of Jupiter. Bottom line: Using the Very Large Telescope, astronomers have seen the growth of baby planet AB Aurigae b.