Sam blogs about all kinds of science at www.samanthagouldson.com.
Latest posts by Sam (see all)
- Have you ever wondered…why leaves change colour in autumn? - October 18, 2017
- What is the Orionid Meteor Shower? - October 22, 2016
- How to Stay Safe at the Beach - August 27, 2016
This October Earth will be passing through the tail of Halley’s comet, which will mean a shower of meteors flashing across the night sky. Our science editor Sam Gouldson explains.
What is Halley’s Comet?
A comet is a lump of rocky particles, ice and dust all bound together like a dirty snowball. When the comet nears a star, its surface transforms from a solid to a gas. The star’s light shines through these gases and makes them visible to observers as a fuzzy cloud around the comet’s centre, and a tail streaming out behind.