technology

Astronomers Solve Cosmic Cold Case with NASA Hubble Data

Fonte: NASAClicca qui per aprire l'originale in una nuova finestra ↗
Di HQ Web Team06/10/2026 às 16:0934 visualizzazioni
A gaseous planet in the right foreground, seen mostly in silhouette, orbits a small, white star in the background at left. The star is surrounded by a thin, bright white disk tilted from lower left to upper right. A semi-transparent tail of material comes off the planet toward upper right. Distant stars dot the black background of space.
A gaseous planet in the right foreground, seen mostly in silhouette, orbits a small, white star in the background at left. The star is surrounded by a thin, bright white disk tilted from lower left to upper right. A semi-transparent tail of material comes off the planet toward upper right. Distant stars dot the black background of space.
NASA
NASA, ESA, Leah Hustak (STScI)
NASA, ESA, Leah Hustak (STScI)
NASA, ESA, Leah Hustak (STScI)

Diligent sleuthing by astronomers uncovered a surprising chemical clue that indicates the white dwarf star HS 0209+0832 may host a second-generation planet. This artist’s concept released on Oct. 5, 2026, depicts that possible explanation.

The white dwarf is the “dead” core of a star that burned through all of its nuclear fuel and lost its outer envelope of gas and dust to space. The second-generation planet formed from that cast-off gas and dust, which is why its chemical content is very different from a planet that formed as its host star was forming.

Learn more about this scientific discovery.

Image credit: NASA, ESA, Leah Hustak (STScI)

Fonte
NASA
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