This is roughly half the time since the Big Bang.

A problem is that these structures appear to be far too vast to have formed since the Big Bang.

The gas had been cooling since the Big Bang.

This is the number of years that have elapsed since the Big Bang.

Since the Big Bang, light has been traveling for about ten to fifteen billion years.

It seeks to discover repeating patterns during the 13.8 billion years since the Big Bang.

However, until now, no black hole is known to have come into spontaneous existence since the Big Bang.

"You're looking at an energy density not seen in the universe since the Big Bang."

Most galaxies have been moving away ever since the Big Bang, as explained by the metric expansion of space.

And here I was, being offered a key role in the greatest thing since the Big Bang!