If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

The presence of another planet in the solar system could explain the odd movements of some of the bodies in the Kuiper Belt.

Using two infrared space telescopes and a 23-year gap, scientists may have spotted a mysterious, slow-moving object beyond ...

Vedic astrology intertwines Lord Vishnu's avatars with the nine planets, revealing profound influences on life's aspects.

A new look through decades-old data has unveiled some of the most compelling evidence yet of a hidden ninth planet in the far ...

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

Jupiter and Mars shine in the evening, more planets gather in the morning, and the Eta Aquariid meteors join in.

A Soviet-era spacecraft meant to land on Venus in the 1970s is expected to soon plunge uncontrolled back to Earth.

A half-ton Russian satellite that was built to land on Venus but never left Earth’s orbit could fall out of the sky intact in ...

Mars starts May not far from the Beehive star cluster, Venus is unmistakable in the predawn sky, and Mercury looks best early ...

Sir David Attenborough is reflecting on his life in a new documentary about the health of the world’s ocean. Attenborough ...

Tariffs weren't on the agenda of this week's Robotics Summit, where thousands of tech industry workers mingled with humanoid ...