Olivia Johnson
Recent articles by Olivia Johnson
Autumn equinox explained
When is the equinox in 2023, and what does September equinox mean for stargazers?
How big is the Solar System?
The scale of our Solar System is gigantic. There’s more to our cosmic neighbourhood than eight planets and an asteroid belt.
What is the electromagnetic spectrum?
A guide to the light we can't see, and how it's used by astronomers to get a more complex view of the Universe.