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

NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.

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 Solar System remains a unique natural laboratory for exploring the processes that govern planetary formation, evolution and dynamics. Contemporary research continues to refine our ...

ScientiFix, our weekly feature, offers you a summary of the top global science stories of the week, with links to their ...

Its orbit is extremely elongated and takes 25,000 years to complete. 2017 OF201's size challenges ideas about a ninth planet in our solar system.

A possible cousin of Pluto seems to be circling the far reaches of the solar system. The dwarf planet candidate 2017 OF201 travels in a superwide orbit, with the sun relatively near one end of its ...

Solar flares can affect us on Earth, and radiation from this flare caused a shortwave radio blackout. A map released by the ...

Scientists may have found evidence of a ninth planet hiding out beyond Pluto, but is it actually Planet Nine?

A new Tatooine-like planet outside the solar system may orbit two failed stars, scientists reported Wednesday. Located about 120 light years away, the exoplanet appears to take an unusual path ...

This process, called accretion, is how everything in the solar system – planets, moons, comets and asteroids – came into being. Telescopes can see young solar systems being born.

This new dwarf planet may exist at the edge of the solar system, possibly disproving Planet Nine's existence. This is the story of that newly encountered planet.