Subscribe now

Columnist and Physics

How does astronomy fit into astrophysics – and does it matter?

We need to think more carefully about how we categorise the universe, says Chanda Prescod-Weinstein

By Chanda Prescod-Weinstein

19 February 2025

New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

NASA’s James Webb Space Telescope has captured a tightly bound pair of actively forming stars, known as Herbig-Haro 46/47

NASA, ESA, CSA

With some regularity, I get asked the difference between astronomy and astrophysics. I suppose I’m a good person to ask: Of my three degrees, two of them are in “astronomy and astrophysics”. But what this merger means is that even we “astronomers and astrophysicists” have given up telling the difference between the two. How does astronomy fit into physics? Well, my position is that astronomy is now essentially an area of physics, but I know some people…

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox. We'll also keep you up to date with New Scientist events and special offers.

Sign up

To continue reading, subscribe today with our introductory offers

Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop