Baby Jupiters Must Gain Weight Fast
Jet Propulsion Laboratory https://www.jpl.nasa.gov/ Jan. 6, 2009
This photograph from NASA's Spitzer Space Telescope shows the young star cluster NGC 2362. By studying it, astronomers found that gas giant planet formation happens very rapidly and efficiently, within less than 5 million years, meaning that Jupiter-like worlds experience a growth spurt in their infancy.