A six-month stay on the International Space Station can be a pain in the back for astronauts. While they may gain up to 2 inches in height temporarily, that effect is accompanied by a weakening of the muscles supporting the spine, according to a new study.

„Attention! Attention!“ blares the Russian voice from a loudspeaker. „The nuclear bombs will be launched in one hour.“

From a remote valley in Northern California, Jill Tarter is listening to the universe.