Planet Nurseries Are Smaller Than We Thought

A study reveals that many protoplanetary disks are smaller than previously believed. Researchers found that about two-thirds of 73 observed disks in the Lupus constellation had an average radius of only six times the Earth-Sun distance. This discovery challenges assumptions about planet formation and may explain the abundance of super-Earths around distant stars. The findings suggest that Earth's solar system, with its large protoplanetary disk, may be atypical compared to other planetary systems.