Attendee: Neil deGrasse Tyson

Observational Evidence for the Universe's Existence

As we all know, Neil deGrasse Tyson has an answer for every question.

• Gravity warps space and time
• The universe is, in fact, quite large
• Cosmic rays are not just for scientists
• The universe is 13.8 billion years old, plus or minus 0.00001 billion years

Learn more about his cosmological views Watch his TV shows Discover cosmic rhymes in space