Liked on YouTube: Dark Matter and Dark Energy: The Frontier of Astronomy

Dark Matter and Dark Energy: The Frontier of Astronomy
For a while now, we've been discussing all of things we know about the universe. What about some of the things we don't know? If we look to the current frontier of astronomy, we find two mystifying concepts, dark matter and dark energy. What are these things? How do we know they exist? Do we have any guesses as to what they are? Find out here! Subscribe: http://bit.ly/ProfDaveSubscribe ProfessorDaveExplains@gmail.com https://ift.tt/2CuLIR1 https://ift.tt/1Tzkfjh https://ift.tt/1rDs3Yy... http://twitter.com/DaveExplains Mathematics Tutorials: http://bit.ly/ProfDaveMaths Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 General Chemistry Tutorials: http://bit.ly/ProfDaveGenChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Biology Tutorials: http://bit.ly/ProfDaveBio American History Tutorials: http://bit.ly/ProfDaveAmericanHistory
via YouTube https://www.youtube.com/watch?v=thxknsmN9yk