Neil deGrasse Tyson Quotes:
Ocupation: Astrophysicist
Life: b. October 5, 1958
Birthday: October 5
Dark matter and dark energy are two things we measure in the universe that are making things happen, and we have no idea what the cause is.
source: Source: www.interviewmagazine.com
topic: Dark, Ideas, Two, Dark Matter, Dark Energy
