Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.
Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...
For humans, the most important star in the universe is our sun. The second-most important star is nestled inside the ...
Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...
A century ago, Edwin Hubble unveiled a groundbreaking discovery that revolutionized humanity’s understanding of the cosmos.