On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just ...

Pluto's days, though they drag on a bit at around 153 hours, are nothing compared to its years. Pluto's orbit takes 248 Earth ...

The James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's atmosphere, while at the same time giving methane and other organic ...

The discovery of another moon around Pluto is exciting news for planetary science, but it's also likely causing some anxiety for the team in charge of New Horizons, a spacecraft set to be the first ...

If you've ever wondered what it'd be like to land on a distant world, you have to watch this video of the New Horizons spacecraft's approach to Pluto. NASA released the captivating video, starting off ...

For the first time since Pluto was demoted, the idea of a true ninth planet is edging from speculation toward something ...

MOUNTAIN VIEW, Calif. -- NASA just received a signal back from New Horizons, confirming a successful first flyby of Pluto. Euphoria broke out at NASA as Pluto is now the most distant object reached by ...

Take a mind-expanding tour across our solar system, from Earth to Pluto, learning the staggering distances, travel times, and ...

It's showtime for Pluto. NASA's New Horizons spacecraft has traveled 3 billion miles and is nearing the end of its nine-year journey to Pluto. Sunday, it begins photographing the mysterious, ...

New Horizons sends back best photos yet as probe closes in on Pluto. New color images from NASA’s New Horizons spacecraft show two very different faces of the mysterious dwarf planet, one with a ...

The space telescope is peering into our own solar system's future. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Anyone hungry for the icy ...