A comet from another star system is putting on a show that looks uncannily like a heartbeat, with bright jets of gas and dust ...

Saturn’s icy moon Enceladus has quietly moved from curiosity to prime suspect in the search for alien biology. A decade of ...

As the new year approaches, many people have decided to embark on new adventures. Perhaps you’ve decided that this is finally the year you’ll learn Spanish or figure out how to start sewing your own ...