A Second Solar System? The Discovery That Changed How We Look at Life in the Universe
On February 23, 2017, NASA announced a discovery that immediately captured the world’s attention. Using space-based telescopes, scientists had identified...
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Our Cosmic Home in a Vast Universe
Earth—our blue planet—is the third rocky world from the Sun.It is a place that feels familiar, yet remains deeply mysterious....
How Many Stars Are Out There? And Which One Is the Biggest of Them All
When we look up at the night sky, it’s easy to forget just how overwhelming the numbers really are. Inside...
From Ancient Stargazers to the Big Bang: How Our Universe Began
Humanity began observing the universe more than 5,000 years ago.When the ancient Greeks looked up at the night sky, they...
