Mathematicians calculated where the planet might be based on its effects on Uranus, and astronomers searched for less than an hour before they found the Neptune. That was in 1846.

When Neptune is positioned 180 degrees from the Sun's ecliptic longitude, meaning Neptune, Earth, and the Sun are nearly aligned in a straight line, this is referred to as Neptune's opposition. The ...

When Neptune is positioned 180 degrees from the Sun in ecliptic longitude, meaning that Neptune, Earth, and the Sun are aligned in a near-straight line, it is referred to as Neptune's opposition. The ...

What can sub-Neptunes, exoplanets whose sizes are between Earth and Neptune, and which are between the known for their water-rich compositions, teach astronomers about both where and how to find life ...

But those claims were quickly met with pushback. Independent analyses of the same JWST data suggested the team's evidence for ...

A new program has discovered chaos in a nearby planetary system, which could explain the existence of a phenomenon ...

Earth is the only planet in our solar system with a single moon, making it a rare phenomenon for a planet of its kind.

Several planets, including Mercury, Mars, Venus, Uranus, Neptune, Saturn, and Jupiter, are visible this month. Saturn's moon Titan will cast its shadow on Saturn twice during July. Neptune will be ...

Lovelorn, elusive, and psychic planet Neptune is moonwalking in Aries and Pisces for the next several months. From July 4 until December 10, Neptune is going to be back splashing against the waves and ...