This video introduces the Sun and planets of the solar system. This video looks at galaxies ,identifies the location of the solar system in the Milky Way galaxy and discusses the role of nuclear fusion in the sun.

Learn about the largest star in the universe with the Universe Size Comparison with Stephenson 2-18

Learn the sizes and shapes of different Galaxies with this 3D Universe Size Comparisons video by KLT!

Learn about our Milky Way Galaxy with this fun educational music video and parents. Brought to you by KLT. Don't forget to sing along.

Learn about the star at the center of our solar system -- the Sun!

This video explains the formation of the universe as described by the Big Bang theory.

The Solar System identifies the solar system including the sun and all celestial bodies that orbit the sun.

Cosmic Galaxies identifies all objects within a galaxy by describing a galaxy, including gas, dust, stars, and any object that orbits the stars, and identifies the Milky Way as our home galaxy.

Learn about M51 ULS 1b -- the first extragalactic planet candidate in the M51 Whirlpool Galaxy -- with this space science & planet song by KLT.

Theoretical physicist and Nobel Laureate Roger Penrose (Oxford) describes why he thinks Stephen Hawking was wrong to change his mind about information loss in black holes.

Astrophysicist Scott Tremaine (Institute for Advanced Study) describes why we believe that dark matter exists.

Astrophysicist Scott Tremaine (Institute for Advanced Study) describes the intriguing relationship between galaxies and the enormous black holes at their cores.

Astronomer Jill Tarter, Director of the Search for Extraterrestrial Intelligence Institute, discusses the so-called "Fermi Paradox" about extraterrestrial life developed by famous physicist Enrico Fermi.

University of Chicago cosmologist Rocky Kolb describes the history of dark matter: how it was overlooked by most physicists for decades together with current hypotheses of what it might be and experiments to determine which one is valid.

Learn about Universe Size Comparison with this facts about the universe video. Brought to you by KLT!

The Spitzer mission ended this week after more than a decade of operation. When it first launched, in order to eliminate all sources of infrared radiation, the telescope had a store of liquid helium on board that kept it just two degrees...

This video is answering the question of how many stars are in galaxy.

Humans have been to the moon, and we will almost certainly set foot on Mars very soon. But then what? Can we colonize other places in the solar system? What about beyond our solar system? How will we get there? What kinds of energy will...

The video explains the concept of redshift and blueshift in the context of galaxy movement and how it relates to the shift in wavelength of light emitted by a galaxy. The video then shows how to use an equation to calculate the shift in...

What are the different wavelengths of the electromagnetic spectrum? When seen, what can invisible light reveal? What discovers has the VLA found so far? How do astronomers spend their time?<br/>
The Very Large Array Telescope, Part 2

This video explains the basics of one-dimensional motion, including distance, displacement, speed, and velocity. It also introduces the concept of acceleration and provides equations to calculate these values. These concepts are...

Okay, we've all dreamed about exploring the universe and finding our own little cosmic vacation bungalow. But these places are really far, so how can we get there? Not the way we go through space now, that's just too slow. Are there...

Looking forward to the James Webb Space Telescope? Just wait until ESO's Extremely Large Telescope (ELT) is completed.

We've learned a lot about stars! We know how they form, and we know that most of them exist in galaxies. But how are they arranged within galaxies? And are there different types of galaxies or are they all the same? There is a lot to...