3 October 2025
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  • [ 24 September 2025 ] Nova outburst in Centaurus News
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  • [ 18 August 2025 ] Ten-Year Lease Extension Confirmed at Herstmonceux Observatory News
  • [ 10 August 2025 ] Venus and Jupiter’s bright morning conjunction News
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Ganymede

Observing

New interactive website tools for observers

8 December 2014 Ade Ashford

Astronomy Now Online brings you a powerful interactive global Almanac and UK-based all-sky star maps — the first of a new suite of tools to help plan your observing sessions and travel.

Observing

Jupiter’s moon dance and shadow play to delight observers

3 December 2014 Ade Ashford

The orbits of Jupiter’s large Galilean moons Io, Europa, Ganymede and Callisto are presently almost edge-on to our line of sight, causing the moons to regularly eclipse and occult each other. Multiple shadow transits are also on view!

Picture This

Spooky shadow play gives Jupiter a giant eye

28 October 2014 Astronomy Now

Just in time for Halloween, the Hubble Space Telescope has revealed a spooky view of Jupiter’s Great Red Spot staring back at Earth.

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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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  • AstroFest 2026
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  • Reviews
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  • Spaceflight Now
  • Shop
  • Contact Us
    • Subscriptions
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    • Ask Astronomy Now
    • Editorial
    • Advertising

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