The NASA-funded Sungrazer Project has detected its 5,000th comet, the latest milestone in what has become one of the most successful programs of its kind.
In this International Asteroid Day edition of the Intelligence Brief, we look at what NASA and others are doing to mitigate the threats of potential asteroid impacts in the future.
An International team of scientists say they have found the key building block of organic molecules in meteorites, providing clues to the origins of life on Earth.