spiral arms

The study of giant stars has confirmed that the Milky Way has up to 4 spiral arms, ending the long-held argument that our galaxy has only two branches.

A research team developed the first complete map of the Milky Way galaxy's spiral arms.

The Square Kilometer Array (SKA) is an international program to build the world's largest radio telescope, to detect, detect dark objects, black holes, stars and galaxies. It is