How a medieval Oxford friar used light and colour to find out what stars and planets are made of

Richard Fishacre challenged the scientific orthodoxy of his day, and contemporary astrophysics has vindicated his position.

When will comet 3I/ATLAS get close to the sun? Latest on interstellar visitor

Comet 3I/ATLAS, which made a close approach to the sun, has prompted lots of public interest. Kim Kardashian asked NASA's ...