Astrophysicist and 'StarTalk' host Neil deGrasse Tyson uses the power of Twitter to answer some common questions about our universe. What is a quark? Is there a limit to the expansion of the universe?
What are some questions science can never answer? originally appeared on Quora - the place to gain and share knowledge, empowering people to learn from others and better understand the world. Answer ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results