Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

On October 9, 2008, the State Space Agency of Ukraine sent a message towards Gliese 581c. Unlike the Voyager records, whose messages were chosen by a committee chaired by renowned physicist Carl Sagan ...

Dark matter remains one of science's deepest mysteries. It makes up about 25% of our universe, yet scientists only observe ...

The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

A sweeping new ICE operation shows how Donald Trump’s focus on immigration is reshaping federal law enforcement. Higher steel tariffs kick in. A potential new dwarf planet is identified. And ...

The five dwarf planets recognised by the International Astronomical Union are, in order of distance from the Sun: Ceres, which is the largest object in the asteroid belt between Mars and Jupiter ...

Scientists have identified an object about 700km wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a highly elongated ...

The five dwarf planets recognized by the International Astronomical Union are, in order of distance from the sun: Ceres, which is the largest object in the asteroid belt between Mars and Jupiter, then ...