New observations seem to settle the question of where cosmic rays come from.
Dr Tony Padilla discusses the research. See the paper at: http://arxiv.org/pdf/1302.3307v1.pdf
COMMENT FROM TONY: "My comments at 1.30 were a bit hasty. Cosmic rays do not pass through the earth. Most collide in the upper atmosphere. I was actually thinking of the LHC safety debate. If they exist, mini blackholes produced by cosmic ray collisions on earth would slip straight through because the earth isn't dense enough. But not the protons themselves."
Tony tweets at https://twitter.com/DrTonyPadilla (lots of good science news, links and jokes mixed with some over emotional football commentary)
Nasa write-up at: http://www.nasa.gov/home/hqnews/2013/feb/HQ_13-052_FERMI_Supernova.html
Visit our website at http://www.sixtysymbols.com/
We're on Facebook at http://www.facebook.com/sixtysymbols
And Twitter at http://twitter.com/#!/periodicvideos
This project features scientists from The University of Nottingham
Sixty Symbols videos by Brady Haran
A run-down of Brady's channels:
Tagged under: sixtysymbols,cosmic rays,supernova
Find more lesson plans like this:0.2 miles in Feet: How-to & Steps
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip
Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans
1. Students enter a simple code
2. You play the video
3. The students comment
4. You review and reflect
* Whiteboard required for teacher-paced activities
With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.
Carry out a quickfire formative assessment to see what the whole class is thinking
Create interactive presentations to spark creativity in class
Student teams can create and share collaborative presentations from linked devices
Turn any public video into a live chat with questions and quizzes