Astronomy

Revealed by the UA-led HiRISE camera, sheets of water ice beneath the surface on Mars hold clues to the planet's climate history — and might yield drinking water for future astronauts.

A four-year effort involving Kitt Peak's Bok Telescope and UA students helped a team of astronomers measure the masses of a large sample of supermassive black holes. Despite its modest size and advanced age of almost 50 years, the instrument keeps churning out big science.