One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate.’
In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...
NASA’s new telescope will create the ‘most colourful’ map of the cosmos ever made
The SPHEREx mission will image 1 billion galaxies, 100 million stars, and 10,000 asteroids – and help to answer some of the biggest scientific mysteries.
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Hubble Telescope sets its eyes on cosmic cotton candy near the Tarantula Nebula (photo)
Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.
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Great Mysteries of Outer Space: Dark Energy and the Hubble Tension
Around 13.7 billion years ago, something collapsed. It fell outward into the nothingness that stretched in every direction, ...
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One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s ‘Great Debate’
Hubble makes his mark Edwin Hubble was young and ambitious. At the of age 30, he arrived at Mount Wilson Observatory in Southern California just in time to use the new Hooker 100-inch telescope ...