Today I learned about Redshift &amp; Blueshift. 
Apparently redshift is when a wave gets bigger as an object moves away and blueshift is when a wave gets smaller as an object gets closer. <br /><br /><a href="http://schoolblogs.cuip.net/2013studentallstarsone/wp-content/uploads/sites/17/2013/07/20130717-154048.jpg"><img src="http://schoolblogs.cuip.net/2013studentallstarsone/wp-content/uploads/sites/17/2013/07/20130717-154048.jpg" alt="20130717-154048.jpg" class="alignnone size-full" /></a>