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Olivia Johnson

Olivia Johnson

Recent articles by Olivia Johnson

Equinoxes occur when the Sun crosses the celestial equator. For Earth, this is the point that the planet’s axis points neither towards nor away from the Sun. Credit: BBC Sky at Night Magazine

Autumn equinox: when it is and what it means

The region at the centre of the Milky Way, captured in X-ray by the Chandra X-ray Observatory and radio by the MeerKAT telescope. (Credit: X-Ray: NASA/CXC/UMass/D. Wang et al.; Radio: SARAO/MeerKAT)

What is the electromagnetic spectrum?

How big is our Solar System? credit: MARK GARLICK/SCIENCE PHOTO LIBRARY

How big is the Solar System?

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BBC Sky At Night Magazine is published by Immediate Media Company Limited under licence from BBC Studios, which helps fund new BBC programmes. © Immediate Media Company Ltd 2020.