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Science History
Edwin Hubble: The Astronomer Who Expanded the Universe
135 years since the birth of Edwin Hubble, who revealed other galaxies, demonstrated the universe's expansion, and paved the way for the Big Bang theory.
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Ask the expert
Why is the Night Sky Dark?
If the universe is infinite and filled with shining stars, we might expect a continuously bright sky. Why then is it dark at night?
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Science news
Amidst the Stars, an Invisible Wave
New findings reveal that the "Radcliffe Wave," a huge galactic formation, moves in a wave-like manner
