To calibrate telescopes on earth, nasa is launching an ‘artificial star’ into orbit

New model suggests Hawking radiation is speeding cosmic decay Scientists have long predicted that the Universe’s lifetime is effectively forever – specifically, 101100 years. But now scientists from R

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

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

This groundbreaking astronomer helped us discover our place in the universe

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 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