A wreaking ball of dark matter (5 million times the mass of the Sun) may have plowed through a line of stars streaming around the Milky Way, finds new study. If confirmed, the discovery would suggest dark matter is “cold,” meaning it’s heavy, relatively slow moving, and effectively clumps together.

See the source article by following the link below:
A wreaking ball of dark matter (5 million times the mass of the Sun) may have plowed through a line of stars streaming around the Milky Way, finds new study. If confirmed, the discovery would suggest dark matter is “cold,” meaning it’s heavy, relatively slow moving, and effectively clumps together.