Science: (Astronomy) How much does Thor's Hammer weigh?

I have to admit that I would have never though about how much Thor's hammer weighed, until you this video got into the hypothetical science behind it.  After all Thor's hammer was made in a dying star.  This video isn't so much about Thor's hammer as it is about the density of dying stars.  I am only assuming that Vsauce, the video creator, did the research, but this video would make a great conversation starter when talking about density and specifically about the density of collapsed stars.

 Subject:  Astronomy/Physical Science
Time:  3:29
Grade Level:  6-12

Science (Astronomy): What is the possibility of the existence of aliens?

When you are teaching a unit on Astronomy, inevitably you are going to get into a discussion with students on the possibility of life outside of our own solar system.  In this Veritasium video, Veritasium asks people on the street whether or not they believe in aliens.  The responses are great to listen to.  The discussion of the video is more about the knowledge of how vast a galaxy really is.  If people understood how far a light year actually is, it would be less likely that anybody would believe in the alien types that visit the Earth.  In the video they show a scientist who has discovered 8 exo-planets himself and his ideas on the concept of extraterrestrial life.  Also part of the video they discuss a few methods of how scientists are discovering these exo-planets.

Subject:  Science (Astronomy)
Grade Level: 7-12
Time:  6:36

Science (Astronomy): Is it possible to stop an asteroid?

Bill Nye the Science Guy describes how scientists and physicists might be able to stop an asteroid as it comes closer to Earth.  He discusses the possibilities and potential methods of "shifting" an asteroids course.  One thing I liked in the science video is that he discusses some math and units of conversion dealing with weight.  He explains the science and possibilities in a manner that is very easy to understand.  This video might help you as a science teacher visually introduce asteroids to your students.

Subject:  Science (Astronomy)
Grade Level:  4-12
Time:  7:08

Science (Astronomy and Physics): Is there Gravity in Space?

Veritasium delivers another great video about science.  In this video the question as to whether there is actually gravity in space is answered.  The video discusses that astronauts are not actually floating in space but in reality they are falling as well as the International Space Station.  They never hit the Earth though because they are also moving forward at an incredible speed.  Gravity does affect objects in space but because of motion, objects can maintain an orbit.  Veritasium does a great job explaining this through visual connections that might help you as a teacher get rid of some of the scientific misconceptions out there.

Subject:  Science (Astronomy and Physics)
Grade Level:  4-12
Time:  2:22

Science: What is the Sun and how does it generate energy?

This NASA video describes what the sun is and what it is made out of.  Part of the discussion is about sun spots and solar flares.  They do a great job showing actual video and talk on a younger grade level.

Subject:  Astronomy
Grade Level:  3-12
Length:  3:27

Science: What are the Northern Lights?

This NASA educational video discusses the Aurora Borealis/Northern Lights.

Subject:  Astronomy
Grade Level:  5-12
Length:  4:39

Science: What are Astronomical Units or AU when measuring distances?

This NASA video demonstrates how scientists compare distances between the planets and the sun using the measurement system, Astronomical Units.  They do a great job discussing scaling and why we use AU's as the measurement system when talking about our solar system.

Subject:  Science/Math-Measurement
Grade Level:  7-12
Length:  4:44

Science: What about Mars?

In this educational video, scientists from Arizona State University, discuss a little bit about the red planet, what we know about it, and how we go about studying it.  Great introductory video for those studying Mars.

Subject:  Astronomy
Grade Level:  5-12
Length:  4:49

Science: How big is our Earth compared to the sun and other stars?

You have probably all seen the images out there on Google that show how small the Earth is compared to different planets and suns.  This is a video that kind of takes you through that picture.  It is very well done.

Subject:  Astronomy
Grade Level:  k-12
Length:  3:00

Science: What causes seasons?

This educational video discusses how seasons occur by using some pretty good animations and graphics.  In this video you will learn about the rotation and revolution of the earth.

Grade Level:  3-12
Subject:  Earth Science
Length:  6 Minutes