and a red giant, a star in its final death throes. White dwarfs are some of the densest objects in the universe. According to ...

This artist’s impression shows the red supergiant star Antares in the constellation ... took their data mostly from observations made by NASA’s Webb Space Telescope, NASA’s Hubble Space ...

Recently, however, astronomers have been keeping track of starspot activity on a red giant star called XX Trianguli ... and the HUN-REN Research Center for Astronomy and Earth Sciences (HUN ...

Wolf 359’s extreme radiation and frequent X-ray flares make life-sustaining atmospheres on nearby planets highly unlikely, ...

NASA shares an iconic image of carbon dioxide ice erupting in geysers when Martian winter turns to spring.

A Hubble Space Telescope image of the symbiotic star Mira HM Sge. Located 3,400 light-years away in the constellation Sagitta, it consists of a red giant and a white dwarf companion. This NASA/ESA ...

around a hundred red giant stars—some of the oldest ... some of the most baffling even to modern astronomy. Knowing the precise ages of the stars also holds the key to discovering exactly ...