Ordinary matter makes up just 4% of the observable universe. 🤯
What’s the rest made out of? Drop your guesses in the comments, and watch the video to learn the answer!
The full episode, Astro-Investigates: The Big Bang, is out on YouTube now: https://t.co/xsU04m97Ge
Source: @NASAUniverse
@EverythingScience