From the February 2008 issue

Why are neutron stars constrained to a diameter of 10 to 12 miles?

Jack Whitman, Philadelphia
By | Published: February 1, 2008 | Last updated on May 18, 2023
Neutron stars form from stars with masses above roughly 1.4 times our Sun’s mass. Below that mass, stars will end their lives as white dwarfs, which are larger than neutron stars.