Heidelberg University – Astronomy Now

4 April 2026

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Dwarf galaxy found in deadly gravitational embrace of Sculptor spiral

9 February 2016 Astronomy Now

A dwarf galaxy discovered close to the famous Sculptor Galaxy (NGC 253) by Australian astrophotographer Michael Sidonio has been studied in detail by the 8-metre Subaru Telescope in Hawaii. This fruitful collaboration between amateur and professional astronomers has revealed that the dwarf galaxy, now known as NGC 253-dw2, is being disrupted by the nearby giant spiral.

Hydrothermal activity in subsurface ocean of Saturn’s moon Enceladus

12 March 2015 Astronomy Now

NASA’s Cassini spacecraft finds the first evidence of active hot-water chemistry beyond planet Earth on Saturn’s ocean moon Enceladus — results that have important implications for the habitability of icy worlds.