Astronomers have discovered a planetary system that appears to flip one of astronomy's most reliable rules on its head.

According to these calculations, Earth's total lifespan will be about 9.5 billion years.

NASA's Hubble Space Telescope detected material from a Pluto-like body spiraling into a white dwarf star 260 light-years away from Earth. Credit: NASA / JPL-Caltech / Tim Pyle illustration For the ...

HONOLULU A newly discovered dwarf planet in the solar system has been given a Hawaiian name: Haumea, after the Hawaiian goddess of earth and fertility. Haumea's name was approved Wednesday by the ...

One of the longest stellar dimming events ever observed was likely caused by the gigantic saucer-like rings of either an ...

Our solar system is much like a trail of microcosmic breadcrumbs: Follow the molecular bits as far back as they go, and you'll learn a thing or two about where many of our planets and other celestial ...

WASHINGTON (Reuters) -Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it ...