Thanks to 26 teams of observers, spotting a star blink out showed that asteroid Polymele has a moon.
The Voyager missions are icons of cosmic exploration, and you can celebrate their 45th anniversary with a free webcast tonight (Aug. 18).
Auroras shone in many polar regions last night following a moderate-sized solar storm. And more might be coming after a more recent sun eruption.
Reference NASA's DART (Double Asteroid Redirection Test) mission is the first-ever space mission designed to test planetary defense technologies in asteroid deflection.
A moderate-sized aurora glowed eerily green within view of the International Space Station crew, following a burst of activity from the sun.
Reference NASA's twin probes, Voyager 1 and Voyager 2 have been exploring the cosmos for 45 years. Here, we take a look at some of their best images.
A 66 million-year-old impact crater has been discovered off the coast of West Africa, raising questions about just how many deadly space rocks the dinosaurs had to deal with.
NASA has already identified its top candidate panelists for the UFO study, which is expected to begin this fall and last about nine months.
With the increased activity of the sun over the past week, astronauts on the International Space Station get treated to spectacular views of polar light displays above the planet.
New research suggests that the expansion of the universe could be measured using colliding black holes as 'spectral sirens.'
The soil and water of Mars are normally too harsh for crops, but research led by a then-high schooler finds that alfalfa plants and photosynthetic bacteria might help make conditions fit for farming.
The golden glowing ring of matter seen in the first-ever image of a black hole has been remastered, revealing the action of gravity around such cosmic titans.
A strong geomagnetic storm may hit Earth on Thursday (Aug. 18), triggering stunning aurora displays farther away from the polar regions than usual.
NASA's coming megarocket launch isn't just going to the moon, it's going far beyond that — some of its secondary payloads far, far beyond.
Scientists will study the effects of radiation on yeast in preparation for long-duration crewed missions to deep space.
Ancient grains of dust that are older than the solar system itself have been found in samples from asteroid Ryugu brought to Earth by the Japanese Hayabusa2 spacecraft nearly two years ago.
A powerful and spectacular cosmic dance that began a billion years ago will lead to a collision and merger between two galaxies and the supermassive black holes at their hearts.
Scientists studied the trajectory and debris field of asteroid 2008 TC3 to determine which specific parts of the space rock made it down to the Earth's surface.