Moons might not form around rocky planets much larger than Earth
https://www.newscientist.com/article/2306648-moons-might-not-form-around-rocky-planets-much-larger-than-earth/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
Moons might not form around rocky planets much larger than Earth