Neil deGrasse Tyson

I want to know what dark matter and dark energy are comprised of. They remain a mystery, a complete mystery. No one is any closer to solving the problem than when these two things were discovered.
I want to know what dark matter and dark energy are comprised of. They remain a mystery, a complete mystery. No one is any closer to solving the problem than when these two things were discovered.
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These are some quotes by American author Neil deGrasse Tyson Scientist, who was born on October 5, 1958.