By Euronews
The universe was born 13.7 billion years ago with the Big Bang. But what was there before? Scientists are starting to get an answer thanks to the time-travelling Planck mission.
What was there before the Big Bang?
The universe was born 13.7 billion years ago with the Big Bang. But what was there before? Scientists are starting to get an answer thanks to the time-travelling Planck mission.
