Create an account
Scientistd who study the motions of stars and planets,invented better tools for looking at the universe.
A new approach to studying the world
-Oserve some aspect of the universe.
-Hypothesize about what you oberved.
-Predict something based on your hypothesis.
-Test your predictions through experiments and observation.
-Modify hypothesis in light of results.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together