Even if two celestial objects are completely relative to each other and do not accelerate toward each other due to gravity, they still feel each other's gravitational effects. This is because each object distorts space-time around it, and even if they are stationary with respect to one another, they still feel the distortions. The only way for them to not feel each other's gravity is if they had no gravity at all. Mass influences the curvature of space-time, which in turn affects the motion of mass, as explained by John Archibald Wheeler.
Are black holes places or objects? Neil deGrasse Tyson and cohosts Chuck Nice and Gary O’Reilly answer grab-bag questions about distorting spacetime, Olbers’ Paradox, singularities, the shape of the universe, and more with astrophysicist Charles Liu.
NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here:
https://startalkmedia.com/show/cosmic-queries-black-hole-time-cloak-with-charles-liu/
Thanks to our Patrons Logan Kent, James in 3d, Renee Skrip, Maarten Spruijt, Alan Domonoske, Liam Predergast, sparkman, Cecil J Taylor, abhinav yadav, and Markus Gustafsson for supporting us this week.
Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to new episodes ad-free and a whole week early.