Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Pluto, which infamously lost its status as the ninth planet in 2006, is less than four billion miles away from the sun, sitting in the Kuiper Belt - a region in our solar system beyond Neptune ...

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home. The solar system is our cosmic neighborhood, made up of ...

open image in gallery Is there a possible ninth planet in our solar system? Researchers say they ... a region of icy debris far beyond Neptune’s orbit. The hypothetical planet would explain ...

The James Webb Space Telescope spotted possible signatures for life in an exoplanet's atmosphere. Still, researchers caution it’s far too early to call the findings definitive ...

Probing these wacky celestial bodies can help us understand how conditions beyond our solar system may yield planets vastly different from our own, said study author Thomas Baycroft with the ...

Probing these wacky celestial bodies can help us understand how conditions beyond our solar system may yield planets vastly different from our own, said study author Thomas Baycroft with the ...

Scientists say they have found the strongest evidence yet of life on another planet beyond Earth's ... this study that found proof of life beyond our solar system. This segment aired on April ...

Researchers have found a candidate for the hypothetical Planet Nine, which could be an undiscovered giant planet way out in our solar system. However, as with all ninth planet research, the new ...

This event allows viewers to check out the various worlds in the solar system and the ferocity of ... and still further out, beyond the Milky Way, to countless galaxies. Relive the discoveries ...