Orbiting radar instrument finds Martian analog to lake under Antarctic glaciers.

Scientists have spotted a 12 mile-wide stretch of water underneath a slab of ice at the Martian south pole.
Ian Sample Science editor.
NASA and partner Bradley University of Peoria, Illinois, have selected the top five teams to share a $100,000 prize in the latest stage of the agency’s 3D-Printed Habitat Centennial Challenge competition. Winning teams successfully created digital representations of the physical and functional characteristics of a house on Mars using specialized software tools. The teams earned prize money based on scores assigned by a panel of subject matter experts from NASA, academia and industry. The judges interviewed and evaluated submissions from 18 teams from all over the world and selected these teams:
In a recent paper published to arXiv, the physicists Roland Allen and Suzy Lidstrom, of Texas A&M and Uppsala University, respectively, tackled the question about the Question by describing what they believe to be the 42 ultimate questions of life, the universe, and everything.
In a homage to ‘Hitchhiker’s Guide to the Galaxy,’ two physicists explain the biggest unknowns in science. I’ve summed them up as a tweetstorm.