Even the best telescopes can’t see exoplanets. It’s all about watching for jiggly stars, blue shifts, and transits.

Legend has it that somewhere beyond Neptune and Pluto, there is a ninth planet, with a mass that is five times greater than ...

Mercury will sextile Pluto on Dec. 13, adding a layer of both intensity and enlightenment to our exchanges. Here's what the ...

If future missions confirm sustained heat flow at both poles, Enceladus would strengthen its position as one of the more accessible environments for detecting extraterrestrial life within the Solar ...

Dubbed HD 143811 AB b, the interstellar entity is a gas giant that’s located some 446 light-years away from Earth in a galaxy ...

A rocky exoplanet outside the Earth's solar system may have an atmosphere, according to new evidence gathered by NASA ...

Located 446 light-years from Earth, this planet, dubbed 'HD 143811 b', orbits a 'binary system' where two stars swirl around ...

The two outermost planets in the solar system are generally considered ice giants, yet we know little about their interiors.

Uranus and Neptune may not be the icy worlds we’ve long imagined. A new Swiss-led study uses innovative hybrid modeling to ...

A team of researchers from the University of Zurich and the NCCR PlanetS is challenging our understanding of the solar system ...

Scientists studying the interstellar object ‘Oumuamua have proposed that it may be a fragment from a Pluto-like planet beyond ...

For decades, Pluto was our solar system's ninth planet. This video explains the scientific journey that led to its ...