What's the coldest, windiest place in the solar system? No, it's not Duluth, Minn. It's Neptune, which is also the farthest planet. Today the Earth and Neptune are 2.7 billion miles (4.3 billion km) ...

Perhaps the most intriguing exoplanets found so far are those bigger than our rocky, oceanic Earth but smaller than cold, gas-shrouded Uranus and Neptune. This mysterious class of in-between planets ...

The planet Neptune shines a serene blue in this image assembled from two photos by NASA's Voyager 2 probe during its historic flyby of the planet in August 1989. Neptune reaches an orbital milestone ...

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

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

While Mercury is the innermost planet in the Solar System, on average it spends more time closer to Earth than Venus does.

The presence of an enormous Neptune-sized exoplanet 90 light-years from Earth has been confirmed after it was first spotted in 2019. The study, published in The Astronomical Journal, confirms the ...

A new study suggests that Uranus and Neptune may have more rock in their interiors than previous estimates. The study ...

The findings provide an answer to a planetary mystery that has bewildered scientists for nearly four decades.

Using ESO's Very Large Telescope (VLT), astronomers have observed a large dark spot in Neptune's atmosphere, with an unexpected smaller bright spot adjacent to it. This is the first time a dark spot ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A planet’s opposition occurs when Earth passes between it ...

Three newly discovered worlds are among the smallest and nearest we've ever detected. NASA's Transiting Exoplanet Survey Satellite, or TESS — a super-powerful orbiting telescope designed to hunt for ...