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

42 votes

Accepted

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

answered Nov 6, 2022 at 6:22

41 votes

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

answered Dec 15, 2020 at 4:26

33 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

21 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, 2023 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, 2023 at 7:14

17 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, 2023 at 7:50

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

Does spin really have no classical analogue?

answered Nov 17, 2020 at 19:13

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

answered Aug 23, 2020 at 20:49

14 votes

Using Thin Lens Equation to find how far 1972 Blue Marble photo was taken

answered Aug 29 at 0:17

13 votes

How can coordinates be meaningless in General Relativity?

answered Sep 3 at 7:53

13 votes

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

answered Apr 28, 2023 at 6:31

13 votes

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

answered Oct 27, 2020 at 17:05

12 votes

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

answered Oct 14, 2020 at 20:20

12 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

12 votes

Accepted

Galaxy getting closer faster than light

answered Sep 21, 2021 at 22:34

12 votes

Accepted

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

12 votes

Why does white light appear white?

answered Feb 18 at 1:20

11 votes

What mistake did Einstein make in 1911 when he miscalculated the light deviation?

answered May 22 at 6:59

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

Stack Exchange Network

811 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?

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

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

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

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

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?

Does spin really have no classical analogue?

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

Using Thin Lens Equation to find how far 1972 Blue Marble photo was taken

How can coordinates be meaningless in General Relativity?

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

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

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

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

Galaxy getting closer faster than light

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

Why does white light appear white?

What mistake did Einstein make in 1911 when he miscalculated the light deviation?

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