Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Mars, Venus, Jupiter, Saturn, Uranus and Neptune will all be visible at the same time, splayed out across the night sky in a huge arc. Venus, Mars, Jupiter and Saturn are four of the five "naked ...

In a celestial event known as a great alignment the five planets will be discernible with the naked eye, but to see Neptune ...

This is where multiple planets line up next to each other. On January 21, six planets—Venus, Mars, Jupiter, Saturn, Uranus, and Neptune—will be visible simultaneously in the sky, and their ...

As this lunar cycle progresses, other planets will also make notable appearances in the night sky. Venus and Saturn will align closely on January 18, while Mars reaches its brightest point on ...

MORE: Museums and culture centers are offering discounts on tickets and memberships during winter Venus, Mars, Jupiter and Saturn will be the easiest to spot. Uranus and Neptune also are part of ...