Gianluca Masi from the Virtual Telescope Project captured asteroid 2023 BU when it less than 40,000 km (25,854 mi.) away from ...

Watch the moon phases and libration for 2024, as seen from Earth's Northern Hemisphere, in this time-lapsed animation that is ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the difference, showing that Mars clocks tick slightly faster—and fluctuate over the ...

Orbiting 250 miles above Earth, the views from the International Space Station (ISS) are second to none, and always make a huge impact on astronauts lucky enough to stay there. NASA’s Zena Cardman, ...