One large Milky Way galaxy or many galaxies? 100 years ago, Edwin Hubble settled astronomy's 'Great Debate'
A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...
The Star That Proved the Universe Is Bigger Than We Imagined
Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...
Stunning photo mosaic of neighbouring Andromeda Galaxy captures the glow of 200 million stars
To celebrate the 100-year Edwin Hubble discovery that Andromeda was a galaxy outside our own, astronomers release the most ...
'13.8 billion years unraveled': Hubble's discovery set the stage for the biggest mystery yet
Hubble's discovery of expanding galaxies confirmed the universe's vastness, laying the foundation for the Big Bang theory and ...
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Hubble Settled Milky Way Debate 100 Years Ago
A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...
200 Million-Star Tapestry: Hubble’s Astonishing New Portrait of Andromeda
The Hubble Space Telescope has provided the most detailed survey of the Andromeda galaxy, revealing new clues about its ...
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A cosmic 'CT scan' shows the universe is far more complex than expected
"This process is like a cosmic CT scan, where we can look through different slices of cosmic history and track how matter clumped together at different epochs." ...