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Space Exploration : Recent Questions and Answers (Page 9)

Find answers to your questions about Space Exploration or help others by answering their Space Exploration questions.

Why soviet didn't bring back "laika" to earth & how re-entry logic works?

Was technology not developed that time to do reentry ? When was the first attempt made to re-enter orbit ? How did Soviet successfully did re-entry for Gagarin but not...

Asked on 09/28/2021

1 answer

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

Today I saw movie "Gagarin" and in the bus scene towards the first flight; there were two cosmonauts. If Gagarin was chosen to fly first then why was the second...

Asked on 09/28/2021

1 answer

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

In movie "Gagarin"; towards end there is something called "DTH" which initially doesn't gets activated and it was feared spacecraft will draft away 100 km. what exactly is this system...

Asked on 09/28/2021

1 answer

How to design heatshield bluntness?

How is the bluntness or curvature of a heat shield of a reentry spacecraft designed? If the answer depends on size and mass, consider a deep space sample return "mini...

Asked on 09/28/2021 by Andrew The Great

1 answer

Constructing a non-rotating skyhook with a rotating one

There are two proposed versions of the skyhook concept: rotating (also known as a rotovator) and non-rotating. They're both meant to reduce the speed a launch vehicle...

Asked on 09/28/2021 by Pitto

1 answer

How many people have witnessed Earthrise?

How many astronauts orbited or went around the moon and saw Earthrise? Am I correct in the conclusion that nine missions orbited the moon or used a free-return trajectory around...

Asked on 09/28/2021

2 answer

How did the first manned flight re-entry happened?

How was Yuri Gagarin brought back to the Earth? Did he do entry himself, by ground control, or by software?...

Asked on 09/28/2021 by vikramvi

1 answer

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

In an answer to Why does the government still fund SLS while SpaceX is cheaper and has the same capabilities if not better?, Barry Jenekuns said:Dragon isn't comparable in...

Asked on 09/28/2021 by Fred Larson

1 answer

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

In the video of Los Angeles station KTLA's Frank Buckley interviewing astronaut & Apollo 11 CAPCOM Charlie Duke a communication problem and antenna selection is described:BUCKLEY: Many of...

Asked on 09/28/2021

1 answer

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