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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.
The Regents' Professor of Astronomy and Optical Sciences founded what is today the Richard F. Caris Mirror Lab, where he has pushed the frontiers of large mirror making.
Astronomers have found the most massive galaxy ever seen in the early universe, and it’s about to get bigger. The researchers involved include the UA's Dan Marrone.
For the first time, scientists including the UA's David Sand have directly detected gravitational waves — ripples in space and time — in addition to light from the spectacular collision of two neutron stars. The implications are profound for our understanding of the cosmos.
Tabby's Star has attracted attention from astronomers and invited speculation about whether it could be surrounded by a vast structure built by an alien civilization.
Produced in collaboration with NASA and NOVA, the show will take audiences on a simulated flight to a super-massive black hole that lurks at the center of the Milky Way.
Electromagnetic radiation streaming from the Crab Nebula has its origin in one population of electrons and must be produced differently than scientists have thought. UA scientist Federico Fraschetti calls it "a significant advance in our understanding of particle acceleration at shock waves."
Astronomers have caught the fleeting explosion of a Type Ia supernova in detail. Understanding how they form could have implications for dark energy measurements.
"Synthetic observations" simulating nascent planetary systems could help explain a puzzle — how planets form — that has vexed astronomers for a long time.