How Long Is One Second, Really? Do we really know how long a second is? The science behind how time is actually measured may prove you wrong. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts The Cost of Living on Mars Gallium Element – Beating Heart Reaction How Do We Measure Alien Intelligence? Compilation of UFO Sightings – 2009 to 2011 Did You Know They Are Storing DNA in Space? New study shows that the polar vortex is shifting