To mark the 25th anniversary of Microsoft Windows, we've put together this through the years guide to all the key dates in the history of the operating system. You can also read our handy 25 facts about Windows.
Saturn's rings only formed in the past 100 million years, suggests analysis of Cassini space probe data
New findings contradict conventional belief that Saturn's rings were formed along with the planet about 4.5 billion years ago
Such an earthquake would lead to a complete stress release in this segment of the fault system
Four types of test were performed to assess the performance of parachutes that could be used in missions to Mars
Warming was most pronounced in Siberia region