Universe
The Universe is defined as all forms of matter, energy, space and time in its entirety. The universe is estimated to be around 13.7 billion years old, and having an observable diameter of at least 93 billion light years containing more than 100 billion galaxies. Currently, the Big Bang theory is the accepted explanation of the beginning of the universe. It states that the universe started with a cosmic explosive event, called big bang, and it has been expanding at an accelerated rate since then.
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Science Videos & Lessons: (Reviewed by K-12 teachers) The Big Bang - Beginning of Everything Grade: 5 - 12 Learn about the beginning of our universe - the big bang theory. 5:55 |
The Big Bang Theory Grade: 5 - 12 A video explaining the big bang theory, the expansion of the universe, the dark matter, and what we know and don't know about the universe. 7:25 |
How Big is the Universe? Grade: 5 - 12 We know the universe is big. But how big is it? 4:15 |
What is the Universe? Grade: 5 - 12 A quick look at various theories about what exactly is our universe. 4:10 |
What is the Universe Made Of? Grade: 5 - 12 The observable universe is made up of atoms. The video explains the atoms' long journeys from the Big Bang to the molecules they form today. 4:05 |
The Biggest Stars in the Universe Grade: 5 - 12 A comparison of the biggest and largest known stars in the Universe. 4:25 |
Black Holes - From Birth to Death Grade: 5 - 12 Learn about black holes - one of the strangest things in our Universe. 5:55 |
Quasars Grade: 5 - 12 The mystery of quasars is revealed in this presentation. 7:45 |
What are Black Holes? Grade: 5 - 12 A video presentation about Stephen Hawking's theory of black holes and Richard Gott's theory of cosmic strings. It includes a discussion about time travel. 5:25 |
Do We Expand With the Universe? Grade: 8 - 12 We all know that our universe is rapidly expanding since the Big Bang. So, is everything expanding with it? Find out. 2:15 |
What is a Supernova and Where Can I Spot One? Grade: 5 - 12 When a star explodes, it dazzles the whole galaxy, and beyond. Watch this video to learn about a star exploding in the nearby galaxy M82. 3:15 |
How Can We Time Travel? Grade: 5 - 12 Explore the concept of time travel. So, next time you're late for school? Or, a meeting? Just take a wormhole - you'll be there before you know it! 4:10 |
Before Time and Space Grade: 5 - 12 Learn about the grandest of all explosions - the Big Bang - that gave rise to space and time. 3:30 |
Size Does Matter Grade: 5 - 12 How big is our universe? Well, the universe is really, really, really, really, really, really, really, really, really, really, really, really, REALLY big. 2:15 |
3 Questions: Hubble's Universe Grade: 5 - 12 Learn about the Hubble Space Telescope. It has profoundly changed what we know about our universe. 1:40 |
Galaxies: A Cosmic Journey Through the Universe Grade: 5 - 12 Go on a cosmic journey through the universe. 5:35 |
A Universe Full Of Galaxies Grade: 5 - 12 Lesson on galaxies - Learn what galaxies are and how they make up our universe. 6:00 |
Chandra X-Ray Observatory - Exploring the Invisible Universe Grade: 5 - 12 Learn about the Chandra X-Ray Observatory that was placed in the Earth's orbit to capture images of the x-rays emissions from very hot and violent regions of the Universe. Scientists use those images to learn about our universe. 4:45 |
Beyond Einstein: part I Grade: 5 - 12 The documentary explores three incredible predictions made by Einstein and his successors that have turned out to be true. First, that space is expanding from a Big Bang. Second, that black holes exist - these extremely dense places where time itself stops. And third, that there is some kind of energy pulling the universe apart. 7:45 |
Beyond Einstein: part II Grade: 5 - 12 6:00 |
Stunning Portrait of our Milky Way Galaxy Grade: 5 - 12 A presentation on our Milky Way galaxy. 3:10 |
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