Exploring the red planet

A new wave of missions aim to unlock the secrets of Mars

Mars taken on 24 February 2007
Mars: an exciting new tourist destination?

Why do we explore Mars at all?

To search for life. Mars has long been considered the most hospitable place in the solar system beyond Earth, for both alien life and future human habitation. The second closest planet to ours after Venus, it is visible to the naked eye; its red-tinged terrain has been more closely observed via telescope since Galileo’s time. Over the centuries we’ve learnt that it is similar to Earth in many ways: it has clouds, winds, a roughly 24-hour day, seasons, polar ice caps, volcanoes and canyons. In the 19th century, scientists thought there were oceans and vegetation on its surface, even canals. We know now that it is a frozen desert (temperatures range from -140ºC to +30ºC in the equatorial summer), but in the past it seems to have had a warmer, denser atmosphere, with rainstorms, rivers and lakes. Even today it has all the ingredients necessary for life: water, organic carbon and energy.

Subscribe to The Week

Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

SUBSCRIBE & SAVE
https://cdn.mos.cms.futurecdn.net/flexiimages/jacafc5zvs1692883516.jpg

Sign up for The Week's Free Newsletters

From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.

From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.

Sign up
Explore More