Search the Dictionary:

 
A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z
 
Big Bang

Big Bang:

In the beginning, there was no space and no time. Everything was squeezed together under incredibly high pressure and temperature. Then, more than ten billion years ago, the universe suddenly exploded into being. Scientists call this the Big Bang. Matter formed and was carried outward by the blast, and time as we know it began.