3 October 2025
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Hellas basin

News

New study favours cold, icy — not warm, wet — early Mars

16 June 2015 Astronomy Now

The high seas of Mars may never have existed, according to a new study that looks at two opposite climate scenarios of early Mars and suggests that a cold and icy planet billions of years ago better explains water drainage and erosion features seen on the planet today.

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News Headlines

  • Nova outburst in Centaurus
    24 September 2025
  • Astronomy Now relaunches digital platform
    12 September 2025
  • Potentially habitable planet TRAPPIST-1e displays tentative evidence for an atmosphere
    8 September 2025
  • Ten-Year Lease Extension Confirmed at Herstmonceux Observatory
    18 August 2025
  • Graphic showing the close conjunction of Jupiter and Venus with other stars and contellations marked on a dark sky, above a horizon with trees in silhouette.
    Venus and Jupiter’s bright morning conjunction
    10 August 2025
  • Home
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      • September last issue
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  • AstroFest 2026
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    • DSLR Calc
  • Reviews
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  • Spaceflight Now
  • Shop
  • Contact Us
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    • Ask Astronomy Now
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