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universe

How the Universe Works: Nothing Becomes Everything!
Image: NASA/ESA

How the Universe Works: Nothing Becomes Everything!

Thanks to Galileo, Hubble, Einstein, and other great scientists, we’ve come a long way in our understanding of the cosmos. And modern technology allows us to explore space like never before.

Discover what we know about the universe — and ponder the many mysteries we have yet to unravel.

Discovery
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How Big Is The Universe?

How Big Is The Universe?

You already know the answer is "big!" But find out more about how the universe has been growing during a 13.8 billion year period. More...

Video
Royal Observatory Greenwich/Beakus
Robot Astronomy Talk Show: Back in Time

Robot Astronomy Talk Show: Back in Time

It takes time for light to travel through space. So, when we gaze at the stars, we’re looking “back in time.” Explore this phenomenon with "super genius" Dean Stockwell. More...

Video
Jet Propulsion Laboratory
Slyder: The Infrared Universe

Slyder: The Infrared Universe

Thanks to NASA’s Spitzer Space Telescope, which views the universe in infrared light, we can see spectacular space imagery normally invisible to human eyes. Check out photos and solve puzzles. More...

Interactive
NASA SpacePlace
Space: Cosmos

Space: Cosmos

See how the difficult and tedious work of Hubble and Humason led to the amazing discovery that the universe is expanding, supporting the Big Bang theory of how the universe originated. More...

Video
Science Channel
Stephen Hawking: Questioning the Universe

Stephen Hawking: Questioning the Universe

There is nothing bigger or older than the universe. But how did it begin? How did life begin? And are we alone? These are the questions Hawking has spent a lifetime investigating. More...

Profile
TED
The Energy Distribution of the Universe

The Energy Distribution of the Universe

About 96 percent of the universe is made up of dark matter and dark energy. X-ray astrophysics is crucial to understanding the dark, mysterious parts of the universe. Take a look. More...

Interactive
Chandra X-Ray Observatory
The Evolving Universe

The Evolving Universe

The universe was an incredibly hot and dense ball of fire 13 billion years ago. Find out what happened after the Big Bang — and how we're all connected to the universe. More...

Video
Smithsonian
The History and Structure of the Universe

The History and Structure of the Universe

Our journey toward understanding the universe began thousands of years ago. Take a look at the biggest milestones. More...

Interactive
Space.com
The Secret Life of Scientists and Engineers: Neil deGrasse Tyson

The Secret Life of Scientists and Engineers: Neil deGrasse Tyson

Meet this astrophysicist and director of the Hayden Planetarium in NYC. Find out his "secret" along with what he loves most about the universe. More...

Profile
NOVA/PBS
Universe 101

Universe 101

What is the universe made of? How fast is it expanding — and will it ever stop? Explore these and other unanswered questions cosmologists are investigating. More...

Article
NASA
Universe Timeline

Universe Timeline

After the explosion that created the universe's matter and energy, gravity and other forces of nature emerged. Find out how our universe has evolved and what may happen after our sun has burned out. More...

Interactive
NOVA/PBS

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