Alan Shepard
John Glenn was the first to ORBIT the earth, but not the first one in space from the USA
Jim Lovell was on Apollo 8 and 13
Michael Collins orbited the Moon in the Command Module for Apollo 11
Marc Garneau - Also our Minister of Transportation right now! Been a politician a while
Chris Hadfield - has spent more time in space than any other Canadian, but not the first.
Roberta Bondar - First Canadian Woman in space.
Pierre Poutine -
A link is best here. Not a real person is the short answer.
C) Chandrasekhar limit - Relates to White Dwarfs and Neutron stars, but not Black Holes directly.
A) Where God divided by Zero - Said by comedian
Stephen Wright in 1987 about Black Holes
B) Quantum Singularity - Einstein's name for black holes when he predicted them, but they hadn't been discovered yet. May not even be true
according to wikipedia.
D) Photon Sphere - Pulled right from
the wiki article.