Question Red Shift

[Artistscientist]

Dr. Pesce,
How do we know the Red Shift that we view isn't caused by some unknown physical property of the universe that we cannot see or detect? I feel that the ancient textbook answer of the Doppler effect was too easy, especially considering how much Dark Matter mass we are not taking into account very well, and the unknown quantum effects at great distance. Who are the astrophysicists that are writing about another reason for the Red Shift? Thank you.
Best, Doug Czor

 

[Wolfshadw]

Please post any further questions to Dr Pesce in the AMA thread. I have copied and pasted your question there.

Ask Me Anything - AMA with Astrophysicist Dr. Joe Pesce!

Hey Astronomy Fans! I’m happy to be here again on this AMA! Your questions and enthusiasm are great, and I look forward to hanging out with you this week. To recap my background: I'm an astrophysicist primarily interested in the environments of the galaxies hosting supermassive black holes...

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Wolfshadw
Moderator

 

[Catastrophe]

AMA link.