Our galaxy is a spiral galaxy that comprises a disc of stars, dust, and gas, and its spiral arms are delimited. Initially, scientists believed that the disc was just flat. Later on, they figured out something else. Apparently, the Milky ...

There are still many mysteries that Milky Way challenges us to discover and solve. One of them includes some odd yet fascinating stellar streams, some river-like structures made up of stars. These cosmic features puzzle astronomers’ work, especially when it ...