The Dawn spacecraft broke several records when it visited Vesta and Ceres in the asteroid belt.
Before their fiery demise, NASA's twin GRAIL spacecraft mapped the moon in a quest to learn more about our closest neighbor.
Astronomy may focus on the stars, but occasionally something happens to bring it back down to Earth — like a swarm of insects shorting out their telescope.
The atmosphere surrounding the largest TRAPPIST-1 planet makes a strong case for it being a rocky world.
The primary mission for NASA's Deep Space 1 was to test out a dozen new advanced technologies. During the spacecraft's ride through space, it also swung by an asteroid and a comet.
Hubble has captured the universe for nearly 30 years. A new report estimates that the telescope will continue to function for at least another five.
One of Earth's nearest exoplanet neighbors, the planet orbiting Barnard's Star, may still have a chance at hosting life, despite its frigid temperatures.
NASA's Phoenix Mars Lander was a recycled spacecraft that became the first spacecraft to sample water on Mars.
The newest snowman-like image of Ultima Thule (2014 MU69), a pristine object from the dawn of the solar system, is already revealing insights into how planets form.
Only moments before New Horizons flew by the most distant solar system object ever visited, astrophysicist and Queen guitarist Brian May released his new single based on the mission.
As 2018 draws to a close, one group of people plans to celebrate something far more unusual — a flyby of Ultima Thule, the most distant solar system object ever explored. Here's what to expect.
Gas and dust disks around young stars reveal features that suggest planets are off to an early start.
For hundreds of years the Small Magellanic Cloud has provided astronomers with a relatively close-up view of another galaxy.
A black dwarf is all that is left after a white dwarf star burns off all of its heat, but retains its mass.
A world tightly circling a pair of stars could cling to its moon, providing potential regions for life to evolve.
A spiral galaxy has a distinct winding shape. Most of the galaxies observed by astronomers are spiral galaxies.
A spacecraft orbiting the dwarf planet could use Pluto's moon Charon to make important orbital changes.
In less than 10 weeks, NASA's New Horizons spacecraft will explore the most distant target ever visited by a spacecraft. Mission team members don't know what to expect — and that's part of the fun.
The geological hotspots that surround geysers throughout the solar system are mysteriously absent on Jupiter's ocean-harboring moon Europa.