Physical Constants Astro Constants Particle Data Unit Conversion Periodic Tables Materials Safety Nobel Info Exact Time Fund. All great discoveries have involved such a leap. The important thing is not to stop questioning. My science data book says that the mass of a photon is zero.
Someone kindly explain,please.
They traveled at a relatively slow rate compared to the speed of light.therefore,would not the light generated at BIG BANG time have passed me by and been long forgotten. We do know it could be bent by the gravity of a star. All rights reserved. Please, read our legal info before using this site.