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E.g., 06/18/2019
E.g., 06/18/2019
Your search has returned 47 images:
  • Mars ice caps
  • Green Bank Telescope
  • Hayabusa2 and OSIRIS-REx
Your search has returned 103 articles:
  • News

    Mars’ lake may need an underground volcano to exist

    If Mars conceals a lake beneath its south polar ice cap, the planet must also have a hidden chamber of magma to keep the water liquid, a new analysis suggests.

    Signs of a 20-kilometer-wide lake, buried beneath about a kilometer and a half of ice near Mars’ south pole, were first reported in 2018 by a team led by planetary scientist Roberto Orosei (SN: 8/18/18, p. 6). The discovery kicked...

    02/19/2019 - 13:04 Planetary Science, Astrobiology
  • Soapbox

    It’s time to start taking the search for E.T. seriously, astronomers say

    Long an underfunded, fringe field of science, the search for extraterrestrial intelligence may be ready to go mainstream.

    Astronomer Jason Wright is determined to see that happen. At a meeting in Seattle of the American Astronomical Society in January, Wright convened “a little ragtag group in a tiny room” to plot a course for putting the scientific field, known as SETI, on NASA’s agenda...

    01/28/2019 - 06:00 Astrobiology, Astronomy, Science & Society
  • Feature

    Two daring spacecraft aim to bring asteroid dust back to Earth

    Shogo Tachibana greeted asteroid Ryugu with dread.

    The cosmochemist with the University of Tokyo had spent 10 years helping to design a mission to Ryugu’s surface. To touch down safely, the spacecraft, Hayabusa2, needs to find broad, flat stretches of fine-grained dust on the asteroid. But on June 27, when Hayabusa2 finally reached its target after a three-and-a-half-year journey (SN...

    01/15/2019 - 14:42 Planetary Science, Astrobiology
  • News in Brief

    The sugar that makes up DNA could be made in space

    Parts of DNA can form in space.

    For the first time, scientists have made 2-deoxyribose, the sugar that makes up the backbone of DNA, under cosmic conditions in the lab by blasting ice with radiation. The result, reported December 18 in Nature Communications, suggests that there are several ways for prebiotic chemistry to take place in space, and supports the idea that the stuff of life...

    12/19/2018 - 08:00 Astrobiology, Planetary Science
  • News in Brief

    NASA’s Mars 2020 rover will look for ancient life in a former river delta

    The next NASA Mars rover will hunt for signs of ancient life in what used to be a river delta, the agency announced on November 19.

    The rover is expected to launch in July 2020 and to land on Mars around February 18, 2021. It will seek out signs of past life in the sediments and sands of Jezero crater, which was once home to a 250-meter-deep lake and a river delta that flowed into the...

    11/19/2018 - 15:36 Planetary Science, Astrobiology
  • Rethink

    We may not have found aliens yet because we’ve barely begun looking

    With no luck so far in a six-decade search for signals from aliens, you’d be forgiven for thinking, “Where is everyone?”

    A new calculation shows that if space is an ocean, we’ve barely dipped in a toe. The volume of observable space combed so far for E.T. is comparable to searching the volume of a large hot tub for evidence of fish in Earth’s oceans, astronomer Jason Wright at Penn State...

    09/30/2018 - 08:00 Astronomy, Astrobiology