Hubble

Astronomers have confirmed four white dwarf stars previously hidden in binary systems within 65 light-years of Earth. One system, located just 25 light-years away, ranks as the ninth closest known white dwarf to the Sun.

10 gennaio 2026 Riportato dall'IA

Astronomers have identified a small companion star, named Siwarha, that is disturbing the atmosphere of the red supergiant Betelgeuse, explaining its unusual brightness changes. Using eight years of data from NASA's Hubble Space Telescope and ground observatories, researchers confirmed the companion's presence through a visible wake of dense gas. The discovery, announced at the American Astronomical Society meeting, sheds light on the evolution of massive stars.