Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy F or centuries our solar system was the only planetary system known to humans. We had no proof other ...

Galaxies, planets, black holes: to most people, everything about our Universe sounds and feels enormous. But while it's true ...

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

The European Space Agency (ESA) is ready to guide the ESA/NASA Solar Orbiter spacecraft through its closest encounter with ...

The Public Library kick-started February vacation by venturing out to space with a brave group of young readers on Tuesday morning. The library hosted the event titled “Stories with Carole”, which ...

NASA's James Webb Space Telescope is providing the best look yet at the chaotic events unfolding around the supermassive ...

By combining the four giant telescopes of the Very Large Telescope, an international team has observed the exoplanet WASP-121b with unprecedented precision, revealing one of the most extreme climates ...

An asteroid that could level a city now has a 3.1-percent chance of striking Earth in 2032, according to NASA data released ...

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

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...