In 2009, the European Space Agency's orbiting X-ray telescope dubbed XMM-Newton discovered that the object is indeed a white dwarf, designating it RX J0648.0–4418. RX J0648.0–4418 has a mass ...
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 ...
The observations made using the European Space Agency's XMM-Newton orbiting X-ray telescope appear to show a white dwarf nearing the point of no return — called the event horizon — as it ...