Explore big discoveries that have revolutionized our understanding of the universe. How big is the universe? Will it ever end? Why is so much of it made of mysterious dark matter and energy? See how ...

How big is the universe? If it began with the Big Bang, will it also have an end? Is there life beyond our planet? Questions like these inspired the launch of Voyager I in 1977 and have driven ...

How big is the universe? What is it made of? Are we alone? Questions like these have inspired amazing discoveries that have transformed our understanding of the universe since the 1970s, shedding ...

When we look at the world at the tiniest scales, things get very weird. Take a wild ride through the quantum world, from the discoveries that reveal its strange rules to the amazing technologies it ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American This essay is adapted from the book Cosmology ...