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Space Exploration : Recent Questions and Answers (Page 8)

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

Are there microclimates with better weather conditions on Mars?

On Earth, a microclimate mostly refers to an area which differs from the surrounding areas in temperature or humidity. And what about Mars ? Are there places...

Asked on 09/28/2021 by Cornelis

1 answer

Why is a corner of InSight's selfie cropped like this?

A couple days ago, InSight took a selfie from the surface of Mars: Image credit: NASA/JPL-Caltech Most articles...

Asked on 09/28/2021

1 answer

Are there any related groups of satellites that are in a line of 6 or more in a row?

02/03/20 0450hrs, in Bradford, West Yorkshire, Uk. I saw a satellite going across the sky, it was not too bright and was followed by another and then 4 more they...

Asked on 09/28/2021 by DEAD_MAN_ WALKING

3 answer

Was there a backup plan in case the Shuttle toilet malfunctioned?

What was the plan in case the Space Shuttle toilet malfunctioned? How were the astronauts expected to then handle their waste? Did they carry Apollo-style fecal collection...

Asked on 09/28/2021

1 answer

Is it impossible to prevent the combustion instability by injecting the reactants at the choking condition for the liquid rocket engine?

For the liquid rocket engine like LOX/LH2, LOX/methane or LOX/kerosene, the injection velocity fluctuation of fuel and oxidizer (u') can cause the combustion instability sometimes. However, isn't it possible to...

Asked on 09/28/2021 by Mr.Kim

2 answer

Why is the supply of RTG's running short?

I always hear that NASA has only a limited amount of radioisotope thermoelectric generators (RTGs) remaining.I did some superficial research on how they work and what is needed to...

Asked on 09/28/2021 by Zaibis

3 answer

Why are spin-stabilized rockets stable?

Spinning rigid bodies are stable about their axes of smallest and largest moments of inertia. When there are energy dissipation modes, such as bending and propellant slosh, only the largest...

Asked on 09/28/2021 by space_voyager

3 answer

Why does the government still fund SLS while SpaceX is cheaper and has the same capabilities if not better?

Due to SpaceX's recent advancements in now proven rocket tech, why does the government still fund (what some would argue to be bloated) cost-plus contracts with Boeing and Lockheed? Am...

Asked on 09/28/2021

6 answer

How many US states receive large amounts of money due to SLS?

That NASA is spread out over so many locations across the US is history and discussed elsewhere in this site. Briefly, Congress approves funding and the funding ends up in...

Asked on 09/28/2021

1 answer

What is a K-bottle?

This answer has pictures of the Enterprise shuttle, which was used for gliding and landing tests. One picture (included below) shows oxygen, hydrogen, and ammonia stored in "K-bottles"....

Asked on 09/28/2021

1 answer

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