Kate Humble: 'As close to the Sun as I'll ever be'


On a day in early January, the Earth is closer to the Sun than at any other time during the year.

That day is known as perihelion. Despite the Sun being 3.1 million miles (5 million km) closer to the Earth on perihelion than in July, the Earth's tilt means it is still winter in the northern hemisphere.

See Orbit: Earth's Extraordinary Journey on BBC2 at 21:00 on Sunday March 11 and afterwards on the BBC iPlayer.

Read more about the Earth's atmosphere and climate.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.