Astronomers discover 87 stellar stream candidates in the Milky Way

Stellar streams are trails of stars that astronomers can study to solve mysteries about the history of our Milky Way galaxy and, potentially, the dark matter that helps shape the cosmos despite eluding direct observation. These streams have largely been left behind by small dwarf galaxies and globular clusters, which have since petered out of existence. But there is a rare and important third type of stellar stream: streams from globular clusters that still survive.