For decades, we believed there were nine planets in our solar system—until Pluto was reclassified in 2006. But what if ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

A planetary alignment, or a "planet parade" according to the internet, will grace our night sky just after dusk, according to ...

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

February brings a rare planetary parade, with five bright planets in clear view and a special alignment of Mercury and Saturn ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

Mars, Jupiter, Uranus, Venus, Neptune, Mercury and Saturn will appear in a row on the evening of 28 February, marking the last time for 15 years that all of the planets will be visible at the same ...

DWPhoto/Getty Throughout January, planets Venus, Mars, Jupiter, Saturn, Neptune and Uranus will all be visible in the night sky. However, the best time to catch a glimpse of the planets will be on ...