The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are ...

Importantly, the 6,000 figure is continuously updated as astronomers around the world confirm new planets, meaning no single planet is officially the 6,000th.

This brings us to the complexity of NASA's announcement. "Confirmed planets are added to the count on a rolling basis by ...

An asteroid the size of a skyscraper is approaching Earth at 24,136 miles per hour. The giant asteroid will be at its closest ...

Stargazers can tune in to the Virtual Telescope Project's YouTube stream beginning at 11 p.m. EDT on Sept. 17 (3:00 GMT Sept. 18) to see live views from the organization's robotic telescopes located ...