A glass bead retrieved by China's Chang'e-5 lunar mission is offering a glimpse into the moon's hidden interior and violent past. Witness live views of Earth from the International Space Station as it ...

Exoplanets—planets that orbit stars beyond our solar system—have transformed our understanding of the universe. Since the ...

Stars that pass close to the solar system could pull planets out of alignment, sending them hurtling into the sun or out into space ...