22 September 2023
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Latest News
  • [ 11 September 2023 ] The Great Square of Pegasus: heralding autumn News
  • [ 18 August 2023 ] New comet predicted to brighten rapidly as it sprints Sunwards News
  • [ 2 August 2023 ] NASA picks up faint carrier signal from Voyager 2 News
  • [ 31 July 2023 ] Razor-sharp test images show Euclid’s instruments performing as expected News
  • [ 31 July 2023 ] NASA loses touch with Voyager 2; waits for craft to ‘phone home’ News
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Geronimo Villanueva

News

Mars lost an ocean’s worth of water

6 March 2015 Astronomy Now

NASA scientists have determined that a primitive ocean occupying almost half of Mars’ northern hemisphere once held more water than Earth’s Arctic Ocean and that the Red Planet has lost 87% of that water to space.

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News Headlines

  • The Great Square of Pegasus: heralding autumn
    11 September 2023
  • New comet predicted to brighten rapidly as it sprints Sunwards
    18 August 2023
  • NASA picks up faint carrier signal from Voyager 2
    2 August 2023
  • Razor-sharp test images show Euclid’s instruments performing as expected
    31 July 2023
  • NASA loses touch with Voyager 2; waits for craft to ‘phone home’
    31 July 2023
  • Home
  • The Magazine
    • About
    • Current Issue
    • Subscribe
    • Renew Subscription
      • September last issue
      • October last issue
      • November last issue
  • AstroFest 2023
  • News
  • Observing
    • UK Sky Chart
    • Almanac
    • Scope Calc
    • DSLR Calc
  • Reviews
    • Equipment
    • Book Reviews
  • Spaceflight Now
  • Shop
  • Contact Us
    • Subscriptions
    • Your Views
    • Ask Astronomy Now
    • Editorial
    • Advertising

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