A rare planetary alignment featuring Mercury, Mars, Saturn, and Neptune will be visible this week. Here's when and how to watch the early-morning sky show from India.

Planetary alignments occur when multiple planets from our solar system appear together in the night sky. There are four major categories of planetary alignments: mini (3 planets), small (4), large ...

Add Yahoo as a preferred source to see more of our stories on Google. February will be closing out with a "great evening alignment" on Friday, Feb. 28 when seven planets will align in the sky.

A rare planetary alignment will take place on Friday, Feb. 28. Seven planets will be visible, with most of them being visible to the naked eye. February will be closing out with a "great evening ...

A rare celestial occasion will light up the Saturday evening skyline across California and the rest of the nation, featuring a bright six-planet parade in a special planetary alignment visible to ...