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    1. Home
    2. 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
    Science

    Autumn equinox 2021: 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)
    Science

    What is the electromagnetic spectrum?

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

    How big is the Solar System?

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    BBC Sky At Night Magazine is published by Our Media Ltd (an Immediate Group Company) under licence from BBC Studios, which helps fund new BBC programmes.© Immediate Media Company Ltd. 2022