Back to Glossary

Milky Way

The galaxy that contains our Solar System, characterized by its barred spiral structure with multiple spiral arms extending from a central bar.

Source: esa.int

APODs including "Milky Way"

A Cerro Tololo Sky

14/05/2001

A Cerro Tololo Sky
Image Credit: Roger Smith / NASA APOD

High atop a Chilean mountain lies one of the premier observatories of the southern sky: Cerro Tololo. Pictured above is one of the premier telescopes of the Cerro Tololo Inter-American Observatory (CTIO) and of the past quarter-century: the 4-meter Blanco Telescope. Far behind the telescope are thousands of individual stars and diffuse light from three galaxies: the Small Magellanic Cloud (upper left), the Large Magellanic Cloud (lower left), and our Milky Way Galaxy (right). Visible just to Blanco's right is the famous superposition of four bright stars known as the Southern Cross. The observatory structures are lit solely by starlight.