The solar system's most distant planet, Neptune, is at opposition this morning at 9 A.M. EDT. Like Saturn, it is visible all ...

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 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 ...

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

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered two new exoplanets around a young ...

Of all the potential super-Earths—terrestrial exoplanets more massive than Earth—out there, an exoplanet orbiting a star only 40 light-years away from us in the constellation Cetus might be the most ...

Scientists have seen one of the mysterious “dark spots” on Neptune from Earth for the first ever time. Researchers spotted the feature using the European Southern Observatory’s Very Large Telescope, ...

It’s been nearly 2 centuries since a planet was discovered in the solar system. But now scientists think they’ve uncovered ...