User benrg

63 votes

Accepted

Could the observable universe be bigger than the universe?

answered Mar 15, 2021 at 1:35

51 votes

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What happens to an astronaut (with a long rope trailing behind him), when he crosses the event horizon of a black hole?

answered Aug 31, 2020 at 4:58

41 votes

Why can't the human eye focus to make blurry photos/video clear?

answered Dec 15, 2020 at 4:26

41 votes

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Space falling faster than light after it falls inside the event horizon of a black hole?

answered Nov 6, 2022 at 6:22

30 votes

Why doesn't planet Earth expand if I accelerate upwards when standing on its surface?

answered Oct 9, 2020 at 19:08

30 votes

Why do images not appear inverted when looking directly through a pinhole camera?

answered Apr 10, 2021 at 18:26

26 votes

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When an object crosses a black hole event horizon, does the entire object cross the event horizon "all at once?"

answered Jan 17, 2022 at 3:07

20 votes

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How realistic is the science behind the Buzz Lightyear movie?

answered Aug 23, 2022 at 4:06

19 votes

What is the relevance of the Lorentz factor in general relativity?

answered Jan 27 at 0:39

19 votes

Can the Hubble constant be measured locally?

answered Dec 17, 2020 at 19:33

18 votes

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Trouble reconciling these two views on gauge theory

answered Oct 5 at 7:14

17 votes

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Could a ship equipped with Alcubierre drive theoretically escape from a black hole?

answered Jul 29, 2014 at 2:53

17 votes

Is my understanding of the delayed choice quantum eraser correct?

answered Jun 27, 2016 at 20:20

16 votes

If particles are points, then aren't atoms empty space?

answered Jul 10, 2016 at 22:59

16 votes

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Why the ant on rubber rope paradox does not work in our universe or de Sitter universe?

answered Jul 24 at 7:50

15 votes

Is the Higgs boson an elementary particle? If so, why does it decay?

answered Jan 15, 2019 at 8:51

15 votes

Are some protons more massive than others due to spinning at a different rate or being in a more excited state?

answered Dec 5, 2021 at 21:58

14 votes

Does spin really have no classical analogue?

answered Nov 17, 2020 at 19:13

14 votes

Does the change in the signature of the metric have a physical meaning?

answered Aug 23, 2020 at 20:49

13 votes

Is it possible that antimatter has positive inertial mass but negative gravitational mass?

answered Oct 27, 2020 at 17:05

13 votes

Was Stephen Hawking's explanation of Hawking Radiation in "A Brief History of Time" not entirely accurate?

answered Apr 28 at 6:31

12 votes

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Is there a name for what Feynman called a fundamental constant i.e. "ratio of electrical repulsion to gravitational attraction between electrons"?

answered May 20, 2021 at 17:43

11 votes

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Galaxy getting closer faster than light

answered Sep 21, 2021 at 22:34

11 votes

Accepted

Does the expansion of spacetime add energy to matter?

answered Jan 1, 2022 at 20:08

11 votes

Why is a Kerr Black Hole outer event horizon represented sometimes as spherical (e.g., Forbes) and sometimes asymmetric (Wikipedia)?

answered Feb 14, 2022 at 20:08

11 votes

How realistic is the game "A slower speed of light"?

answered Oct 14, 2020 at 20:20

11 votes

How much of Earth's history can a spaceship traveling at near speed of light record in an astronaut's lifetime?

answered Dec 28, 2022 at 21:18

11 votes

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How massive objects affect distance measurements, or "But how far away is a black hole singularity, really?"

answered Aug 30, 2022 at 3:44

10 votes

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Eigenvalues of position operator in higher dimensions is vector, not scalar?

answered May 1 at 18:01

10 votes

Does the speed of light in vacuum define the universal speed limit?

answered Jul 13, 2016 at 16:25

Stack Exchange Network

751 Answers

Could the observable universe be bigger than the universe?

What happens to an astronaut (with a long rope trailing behind him), when he crosses the event horizon of a black hole?

Why can't the human eye focus to make blurry photos/video clear?

Space falling faster than light after it falls inside the event horizon of a black hole?

Why doesn't planet Earth expand if I accelerate upwards when standing on its surface?

Why do images not appear inverted when looking directly through a pinhole camera?

When an object crosses a black hole event horizon, does the entire object cross the event horizon "all at once?"

How realistic is the science behind the Buzz Lightyear movie?

What is the relevance of the Lorentz factor in general relativity?

Can the Hubble constant be measured locally?

Trouble reconciling these two views on gauge theory

Could a ship equipped with Alcubierre drive theoretically escape from a black hole?

Is my understanding of the delayed choice quantum eraser correct?

If particles are points, then aren't atoms empty space?

Why the ant on rubber rope paradox does not work in our universe or de Sitter universe?

Is the Higgs boson an elementary particle? If so, why does it decay?

Are some protons more massive than others due to spinning at a different rate or being in a more excited state?

Does spin really have no classical analogue?

Does the change in the signature of the metric have a physical meaning?

Is it possible that antimatter has positive inertial mass but negative gravitational mass?

Was Stephen Hawking's explanation of Hawking Radiation in "A Brief History of Time" not entirely accurate?

Is there a name for what Feynman called a fundamental constant i.e. "ratio of electrical repulsion to gravitational attraction between electrons"?

Galaxy getting closer faster than light

Does the expansion of spacetime add energy to matter?

Why is a Kerr Black Hole outer event horizon represented sometimes as spherical (e.g., Forbes) and sometimes asymmetric (Wikipedia)?

How realistic is the game "A slower speed of light"?

How much of Earth's history can a spaceship traveling at near speed of light record in an astronaut's lifetime?

How massive objects affect distance measurements, or "But how far away is a black hole singularity, really?"

Eigenvalues of position operator in higher dimensions is vector, not scalar?

Does the speed of light in vacuum define the universal speed limit?