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Astronomy
John Davies's user avatar
John Davies's user avatar
John Davies's user avatar
John Davies
  • Member for 5 years, 5 months
  • Last seen more than a month ago
  • Manchester, UK
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Top posts
16
Infalling observer could never cross Black Hole event horizon? [duplicate]
Jan 29, 2019
6
What is the Inner Horizon of a rotating black hole?
Apr 30, 2021
3
Conditions in the Early Universe
Mar 9, 2023
1
Does the twin paradox work in an almost empty universe?
Feb 1, 2021
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Equation for Velocity and distance from Sun of a solar sail powered spacecraft