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Cover Story

Digging in to Mars

By Amanda Miller

March 2019

Every square meter of Mars has been photographed from orbit; its dirt has been scooped up and heated to reveal its constituent chemicals; rovers have driven for kilometers. The surface of Mars, though, has never been dug so deep. That is set to change. Cracking the surface of Mars could deliver readings that will upend tenets about planetary evolution.
News

NASA chief upbeat despite tighter budget

By Amanda Miller

March 11, 2019

Feature

Talking (space) trash

By Adam Hadhazy

March 2019

An easily overlooked, yet critical element of long-duration lunar or Martian missions will be dealing with all of the garbage we humans inevitably produce.

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Opinion

Imaging a habitable world

January 2019

Scientists are detecting exoplanets daily by the slight decrease in light from a host star as a planet transits in front of it. Photos of such a planet could tell us whether or not we are alone in the universe. Louis D. Friedman and Slava G. Turyshev think they have a solution for delivering this photographic evidence, one that will require a 900 trillion-kilometer journey and applying a phenomenon discovered by Einstein.

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