Stargazers will be treated to a dazzling six-planet "alignment" this January.

Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered two ...

A Neptune-sized planet ... TESS (the Transiting Exoplanet Survey Satellite), to discover the exoplanet (a planet outside our solar system), then made further observations with ground-based ...

In case anyone missed the January planetary alignment, two more are expected to be seen in the night sky in February, with ...

HELENA — The planets are aligned. Six planets, Mars, Jupiter, Uranus, Neptune, Venus and Saturn can be seen in the night sky.

Six planets are lining up in a row from our Earthly view of the cosmos, in a spectacle that'll be visible in January through ...

Starting at 12:30 p.m. ET (1730 GMT) on Saturday (Jan. 25), astrophysicist Gianluca Masi of the Virtual Telescope Project ...

The arrival of this planetoid is also thought to have caused a shakeup with Neptune's natural satellites, causing them to break up and coalesce to form new moons. It's also theorized that Triton ...

Referred to as a planetary parade or alignment, this celestial event occurs when multiple planets in our solar system appear ...