The controversy endures over Pluto's true status, but the solar system underdog continues to capture hearts across the globe.

Astronomers use planetary alignment to describe the phenomenon when planets gather closely on one side of the Sun at the same ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

The year 2025 has already been a spectacular time for stargazers and skywatchers. Last month, Venus, Mars, Jupiter, Saturn, ...

The solar system is portrayed as a dynamic, gossip-fueled family, with each planet offering snide comments about one another, ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

Six planets are part of the alignment, which will last until Feb. 18. Mercury will join the alignment later in the month.