Alastair Gunn

Astronomer

Dr Alastair Gunn is a radio astronomer at the Jodrell Bank Centre for Astrophysics at the University of Manchester.

Recent articles by Alastair Gunn

Galaxy Cluster Abel 1351 Hubble Space Telescope, 20 June 2022 Credit: ESA/Hubble & NASA, H. Ebeling. Acknowledgement: L. Shatz

How many galaxies are there in the universe?

A coronal mass ejection captured by NASA's Solar Dynamics Observatory (SDO).

What do stars look like up close?

Cosmic rays permeate the Solar System. Credit: ESA

The 5 fastest things in the Universe

An illustration conceptualising the edge of the observable Universe. Credit: Mark Garlic / Science Photo Library / Getty Images

8 of the biggest questions about the Universe