How is the universe so big?

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

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

f you’ve ever read anything about cosmology, you’ll have come across an astonishing statistic: all the matter around us, everything we see and touch, every star and gas cloud and planet, makes up just

What would you say if intelligent aliens came calling?

On 29 July 2021, more than four centuries after the invention of the telescope, the man who initiated a revolution in astronomy was finally honoured with a life-sized bronze statue. In the herb garden

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