White Dwarf Star's Mass Measured Using Hubble And Gravitational Microlensing

The Hubble Space Telescope has been used to determine the mass of white dwarf star LAWD 37. It is "56 percent the mass of our Sun," according to NASA/ESA.

Credit: NASA, ESA, P. McGill (Univ. of California, Santa Cruz and University of Cambridge), K. Sahu (STScI), J. Depasquale (STScI), N. Bartmann (ESA/Webb) / K. Bacon (STScI) | edited by Space.com's Steve Spaleta