Rods and cones can only detect visible light wavelengths
<br /><br /><a href="http://schoolblogs.cuip.net/2013studentallstarsone/wp-content/uploads/sites/17/2013/07/20130723-194504.jpg"><img src="http://schoolblogs.cuip.net/2013studentallstarsone/wp-content/uploads/sites/17/2013/07/20130723-194504.jpg" alt="20130723-194504.jpg" class="alignnone size-full" /></a>

Is something is moving in a circle it is accelerating, even if it keeps a constant speed, because it is changing direction

Supernova shocks go as fast as several million times the speed of sound

These shock waves are natural particle accelerators that have much more potential than any human made practicle accelerator 

Thirty years can waste your life <br /><br /><a href="http://schoolblogs.cuip.net/2013studentallstarsone/wp-content/uploads/sites/17/2013/07/20130723-194724.jpg"><img src="http://schoolblogs.cuip.net/2013studentallstarsone/wp-content/uploads/sites/17/2013/07/20130723-194724.jpg" alt="20130723-194724.jpg" class="alignnone size-full" /></a>