Milky Way's Ancient Building Blocks: Meet Shakti and Shiva

Keyword-rich point: Astronomers have discovered two ancient star streams, named Shakti and Shiva, that are believed to be the Milky Way's ancient building blocks from 12-13 billion years ago.

Shakti and Shiva are comprised of stars with similar chemical compositions, suggesting they formed around the same time in the early universe.

The two star streams may be relics of distinct galaxies that merged with the Milky Way's primordial pieces during its infancy, offering insight into the galaxy's formation.

The stars in Shakti and Shiva have lower amounts of heavy elements compared to most other stars in the Milky Way, indicating their ancient origins.

The discovery of these ancient building blocks helps astronomers understand the Milky Way's turbulent earliest stages and how galaxies form in the universe.

The study utilized data from the European Space Agency's Gaia space telescope, which is creating the most precise three-dimensional map of the Milky Way.

The identification of Shakti and Shiva, along with the previously discovered "poor old heart" of the Milky Way.