Hubble Identifies 4 Hidden White Dwarfs Within 65 Light-Years of the Sun
Updated
Updated · Techno-Science · Jul 21
Hubble Identifies 4 Hidden White Dwarfs Within 65 Light-Years of the Sun
3 articles · Updated · Techno-Science · Jul 21
Summary
Four white dwarfs concealed by brighter red-dwarf companions were confirmed less than 65 light-years from Earth, including one system about 25 light-years away that now ranks among the Sun’s nearest known white dwarfs.
Subtle speed changes in the red dwarfs first revealed the pull of unseen compact objects, and Hubble’s ultraviolet observations then separated the hot white dwarfs from their companions’ visible light.
All four objects sit in binary systems, offering nearby laboratories to test how paired stars exchanged matter and how their orbits changed over time.
The find suggests the solar neighborhood’s stellar census is still incomplete, with more white dwarfs likely hidden around active or luminous stars.