Close up on exoplanets

On 23 July 1999, Space Shuttle Columbia launched its heaviest-ever payload: the Chandra X-ray Observatory, a new flagship telescope for NASA. It is the world’s most powerful X-ray telescope, capable o

The world’s biggest digital camera telescope has started ...

Galaxies come in all sorts of shapes and sizes. They can be broadly classified as spiral, elliptical or irregular, but each of these still leaves plenty of scope for variety. Take, for instance, the s

The Sky-Watcher Heliostar 76Ha refractor is a fresh new addition to the well-known manufacturer’s telescope line-up and its first venture into dedicated hydrogen-alpha instruments. The spec is highly

I’m responding to an article by Pete Lawrence in the April 2025 issue, titled ‘Flora crosses the Leo Triplet’ (Big Three, in the Sky Guide), which spurred me to have a look for this minor planet. I al

Ten years ago, Pluto emerged from the gloom at the Solar System’s ragged edge – and a new world came in from the cold. Five billion kilometres (3 billion miles) from Earth, on 14 July 2015, NASA’s pia