Astronomers have spotted the most massive known stellar black hole in the Milky Way galaxy after detecting an unusual…
A lack of air defenses meant Ukraine was powerless to prevent a Russian airstrike last week that destroyed the…
Ukrainian President Volodymyr Zelensky has signed into law a key piece of legislation overhauling the country’s mobilization rules. The…
A piece of garbage jettisoned from the International Space Station unexpectedly survived a fiery reentry from orbit last month…