2015-01-28 BBC:星光七纪元-4（在线收听）

This cluster the Pleiades mentioned by Homer in the Odyssey, they appear in the Bible and in some of the goddess by the Aztecs and the Maya, but the interesting thing is that the Pleiades are so young, that early dinosaur never saw them, because at that time the Pleiades hadn't been formed yet, at 100 million years old, they are like baby stars, very very young stars, some of the youngest stars that we can see in the sky.A star is being born somewhere everyday, each time it's one of the most magical events in the cosmos, one that requires mighty forces of nature, and to set the process going, just an element of chance, the tale starts in the cold dark clouds of dust and gas that lurking in deep space, and that it filled the mind of imagination of professor S throughout her career studying the birth of stars.

These clouds are really vast, they can be up to 300 light years across, and that many stars are formed there which is why we call sometimes these clouds stellar nurseries.