A White Dwarf Star’s Unusual Atmosphere Uncovered | Hubble Space Telescope

A White Dwarf Star’s Unusual Atmosphere Uncovered | Hubble Space Telescope

Astronomers using NASA’s Hubble Space Telescope have found a rare ultra massive white dwarf formed from a stellar merger. The discovery was made possible by Hubble’s sensitive ultraviolet observations and suggests these unusual white dwarfs may be more common than once thought.

The white dwarf is 128 light-years away and 20 percent more massive than the Sun. In visible light it looked like a typical white dwarf, but Hubble’s ultraviolet data revealed something unusual . . . 

For more information, visit science.nasa.gov/mission/hubble

Credit: NASA's Goddard Space Flight Center 
Paul Morris: Lead Producer
Duration: 2 minutes, 37 seconds
Release Date: Aug. 13, 2025

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