The leading explanation for all of these mysteries is known as the giant impact hypothesis. According to this story, when the ...

But when did this impact take place? Scientists believe the moon formed during a giant impact about 60-175 million years after the solar system was born. To arrive at this estimate, they can use rocks ...

From the stunning feathers of male peacocks to the vivid blooms of flowers, the story of how Earth became colourful is one of evolution. But how and why did this explosion of colour happen?