Fragments from the asteroid US space agency Nasa has described as the most dangerous rock in the Solar System have arrived in the UK for study.
The tiny pieces of rock and dust from the object known as Bennu will be subjected to a battery of tests at the Natural History Museum, and the Open, Manchester and Oxford universities.
It is a small donation but ample, says the NHM's Prof Sara Russell.
"One hundred milligrams of beautiful" was how she described it to BBC News.