All questions asked by Ricky Pang

List all solved & unsolved questions asked by Ricky Pang

$SU(2)$ Symmetry of Hubbard Model

1 Physics Asked on 07/12/2021

angular momentum condensed matter operators quantum mechanics solid state physics

Why were there two cosmonauts shown in the movie "Gagarin"?

1 Space Exploration Asked on 09/28/2021

history vostok program

Movie "Gagarin" what is the meaning of "DTH" which gets activated during re-entry?

1 Space Exploration Asked on 09/28/2021

How to design heatshield bluntness?

1 Space Exploration Asked on 09/28/2021

design heat shield reentry spacecraft thermal

Constructing a non-rotating skyhook with a rotating one

1 Space Exploration Asked on 09/28/2021

How many people have witnessed Earthrise?

2 Space Exploration Asked on 09/28/2021

apollo program astronauts free return lunar orbit

How did the first manned flight re-entry happened?

1 Space Exploration Asked on 09/28/2021

crewed spaceflight history reentry soviet union spaceflight firsts

Were these Apollo 14 and 15 recovery images taken (by a Navy frogman) using an underwater camera?

1 Space Exploration Asked on 09/28/2021

apollo 14 apollo 15 apollo program photography recovery

What capabilities does Orion have that Dragon-V2 does not?

1 Space Exploration Asked on 09/28/2021

dragon v2 orion spacecraft

What was the nature of the communication problems during Apollo 11's Eagle's descent? How were other antennas selected?

1 Space Exploration Asked on 09/28/2021

apollo 11 apollo program history lunar landing nasa

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