epic, epoch

Epic or epic means of monumental proportions, as in the heroic deeds described in an epic poem--
He described learning to use the new program as if it were an epic tale of heroic adventures.
The story has been made into a twelve-part epic, with a new episode each week.

Epoch or epoch ( almost rhymes with epic ) means a period of time, most commonly a particular period of history--
Many people consider the personal computer as the start of a new epoch in communications.
To historians, the voyages of Columbus mark the beginning of the modern epoch.

Now that you know that, you can say--
"The epic voyage into space marked the beginning of a new epoch--the space age."

Note--you may encounter "e-pic" ( ee pick ) online, an uncommon abbreviation of "electronic picture"--
She posted an e-pic of the new baby on Facebook.