Hubble Space Telescope observations of white dwarf star G238-44 has shown that it is "consuming both rocky-metallic and icy ...

NASA’s Habitable Worlds Observatory "will draw on technologies proven by the agency’s Hubble, Webb and upcoming Roman Space ...

I/ATLAS, a mysterious interstellar object racing toward the Sun, is baffling scientists with its speed and origin. Some ...

The mysterious interstellar object soaring through our Solar System is set to slip behind the sun starting tomorrow. A ...

New images of the 33-million ton interstellar object confirmed it is releasing a nickel alloy commonly used in the aerospace ...

For instance, the Hubble data show more variations in brightness than you'd expect from a ring that circles the planet, he said. Whatever Fomalhaut b's true identity, it's an exciting time to study ...

Astronomers are watching a new comet pass through our solar system with great interest. Based on its glow, the 33-billion-ton ...

Data from the James Webb Space Telescope and other observatories suggests a supervolcanic exomoon may lurk around the giant ...

Astronomers have yet to find irrefutable proof for any natural satellites of exoplanets—so-called exomoons—but as ...

HD 140283, better known as the Methuselah star, is around 200 light-years from Earth, in the constellation of Libra. It is ...

Uranus and Neptune have been called the “ice giants” for decades. But in new research, that nickname might be more a misnomer ...

NASA's Voyager 2 spacecraft captured dark streaks produced by geysers visible on the icy surface of Triton's south polar ...