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
Until 3 billion years ago, Mars was a wet planet much like Earth. It had land, an extensive atmosphere and an ocean that covered two thirds of the northern hemisphere as well as smaller bodies of water. But significant climate change caused the water and atmosphere to boil away, leaving Mars a dry and arid planet. Or so we thought… then came the news from Nasa – Water found on Mars!