US military picks 3 companies to test nuclear propulsion in cislunar space

Russia's space agency said Tuesday it hoped to launch its own orbital station in 2025 as Moscow considers withdrawing from the International Space Station program to go it alone.

"Molecular Tomographer" algorithm maps gene expression in space

World's Largest Map of Space Offers Clues on Dark Energy. A new chart of millions of galaxies across 11 billion years of cosmic history helps to answer some of the biggest cosmological questions.