How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

A possible dwarf planet, like Pluto, has been observed in our solar system, according to a preprint published in arXiv. The area of space where this planet was found was previously thought empty.

The Sun, our life-giving star, is slowly dying. In about 5 billion years, it will exhaust its fuel and transform into a red giant, altering the solar system forever. But long before that, the Sun’s ...

The double star system is called HD 135344 AB and it's about 440 light-years away from Earth. A and B are both young stars, ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Sedna, a distant dwarf planet three-quarters the size of Pluto, is inching toward the brightest star in our sky — and in 2076 ...

The James Webb Space Telescope has discovered an exoplanet using the direct-imaging technique. The host star's light was blocked using a coronagraph to reveal a planet to its right. The light at the ...

Astronomy’s latest trophy planet, TOI-4465 b, is a lumbering gas giant six times heavier than Jupiter. Its existence came to ...

“This pioneering interstellar navigation demonstration and its accompanying publication show that a deep-space mission can ...