Ganymede – Page 6 – Astronomy Now

13 August 2026

Latest News

[ 7 August 2026 ] How to observe the 12 August 2026 solar eclipse Eclipse
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[ 25 July 2026 ] Euclid opens a new window on the first billion years of cosmic history News
[ 10 June 2026 ] Caught in the act: the wind that could kill a galaxy News
[ 4 June 2026 ] Europe’s Mars rover may land in the remains of a vast ancient water system News

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.

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!

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.