12 November 2025
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NASA Science Briefing: Comet Siding Spring at Mars

13 October 2014 Astronomy Now

NASA holds a news conference to discuss the close encounter of Comet Siding Spring with Mars. On October 19, 2014, the comet will pass 139,500 kilometers (88,000 miles) from the red planet.

  • Briefing
  • Comet Siding Spring
  • Mars
  • Mars Express
  • Mars Odyssey
  • MAVEN
  • MRO
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Related Articles

News

NASA confirms evidence that liquid water flows on today’s Mars

28 September 2015 Astronomy Now

New findings from NASA’s Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars. Using an imaging spectrometer on MRO, researchers detected signatures of hydrated minerals on slopes where mysterious darkish streaks that appear to ebb and flow over time are seen on the Red Planet.

News

InSight selfie reveals drab, featureless plain – just what the doctor ordered

11 December 2018 Astronomy Now

NASA’s InSight Mars lander has snapped its first selfie on the surface of the red planet, revealing a level, almost featureless plain that’s exactlly the sort of landing site mission scientists wanted.

News

Mars has belts of glaciers composed of water ice

8 April 2015 Astronomy Now

Researchers at the University of Copenhagen have used data from NASA’s Mars Reconnaissance Orbiter combined with computer modelling to determine that Mars has thousands of dust-covered glacier-like formations on the planet’s northern and southern hemispheres.

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News Headlines

  • How to see Comet Lemmon
    29 October 2025
  • Hubble revisits a cosmic yardstick
    25 October 2025
  • Europe’s planet hunting spacecraft complete and ready for final testing
    21 October 2025
  • Nova outburst in Centaurus
    24 September 2025
  • Astronomy Now relaunches digital platform
    12 September 2025
  • Home
  • The Magazine
    • About
    • Current Issue
    • Subscribe
    • Renew Subscription
      • September last issue
      • August last issue
      • July last issue
  • AstroFest 2026
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    • 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
    • AstroListings

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