In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

Giant radio galaxies (GRGs) are massive, with plasma jets powered by supermassive black holes at their centers, stretching ...

was nearly a million light years away—too remote to be a part of the Milky Way. Hubble's work opened the door to the study of ...

In the heart of our Milky Way galaxy, two gigantic "bubbles" extend roughly 50,000 light-years above and below the galactic ...

Explore HubbleHubble HomeOverviewAbout HubbleThe History of HubbleHubble TimelineWhy Have a Telescope in Space?Hubble by the ...

The full image includes some 2.5 billion pixels compiled from observations spanning more than 1,000 orbits around Earth ...

Recent studies challenge the long-held belief that the Milky Way is a standard model for understanding galaxy formation, ...

which looks markedly different from our own galaxy's history, according to NASA. It is one of over 1 trillion galaxies in the ...

Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

New James Webb Space Telescope observations of a star cluster called NGC 346 are shedding light on how, when and where ...