"We want it both ways: We want love to feel like madness, and we want it to last an entire lifetime. That sounds terrible." Watch Mandy Len Catron's full TED Talk here: http://t.ted.com/9EEoa1Z | TED

On Edwin Hubble's birthday, here's what we can learn about the immense scale of our universe from the Hubble Deep Field images: | TED-Ed