neptune size planets

Microlensing Study Suggests Most Common Outer Planets Likely Neptune-mass

Microlensing Study Suggests Most Common Outer Planets Likely Neptune-mass

A new statistical study of planets found by a technique called gravitational microlensing suggests that Neptune-mass worlds are likely the most common type of planet to form in the icy outer realms of planetary systems. The study provides the first indication of the types of planets waiting to be found far from a host star, where scientists suspect planets form most efficiently.