At a frigid -125 degrees Fahrenheit (-87 degrees Celsius), WD 1856+534 b is the coldest planet ever directly observed, ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Caroline Delbert is a writer, avid reader, and contributing editor at Pop Mech. She's also an enthusiast of just about ...

Pointed away from Earth about 404 miles overhead, the orbital observatory will circle the planet from north to south about 14 ...

Astronomers have found new evidence that a mysterious ninth planet may be hiding at the edge of the solar system - rewriting what we know about the cosmos again. An international team from Taiwan ...

All products featured on Wired are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. Two years ago ...

Saturn orbits the Sun at roughly 9.69 km/s, maintaining its grand system of rings as it cruises through space. Uranus moves at about 6.81 km/s, spinning on its unique sideways axis as it orbits ...

Astronomers have detected a promising sign of a ninth planet lurking at the the farthest reaches of the Solar System.

That initial project had the eventual goal of also using the microscope in space exploration ... how life might persist on distant moons and planets. The knowledge gained can also advance the ...

While observing a section of space using Nasa’s exoplanet surveying satellite, scientists found a peculiar periodic dip in starlight that tipped them off about the presence of a rocky planet ...