Video content
Summer 2020 is a popular time for missions to Mars because of the way the planets align - but how long does it take to get there?
Summer 2020 is a popular time for missions to Mars because of the way the planets align - but how long does it take to get there?
The rocky planets Mercury, Venus, Earth, and Mars were born at the same time from the same material - yet have lived radically different lives. What immense forces are at play?
By Imran Rahman-Jones
Newsbeat reporter
By Caleb Spencer
BBC News
"Mad" Mike Hughes wants to prove thousands of years of human knowledge wrong.
How is our weather affecting the planet? Ben Rich looks at the latest data to help track our changing climate in the first of our new monthly series, Climate Check.
By Paul Rincon
Science editor, BBC News website, The Woodlands, Texas
By Roger Harrabin
BBC environment analyst, Geneva
By Roger Harrabin
BBC environment analyst
Many people who believe the Earth is not round first heard the idea on YouTube. But how important was the video-sharing website in helping the flat Earth movement grow?