How Big is the Universe - Result from Wolfram Alpha (computational knowledge engine) Answer -> 93 billion ly (light years) Wolfram Alpha -> http://www.wolframalpha.com/

A Prime number (or a prime) is a natural number that only has two factors which are itself and 1 and ... the only even prime number is 2. !!!

What vitamin is also called Ascorbic Acid ? Answer is: VITAMIN C