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Space Exploration : Recent Questions and Answers

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

Neutralization of ions in the ion thruster

I have a question about neutralizing the ion thruster, why simply does not put a positive potential on the satellite to prevent the emitted ions from returning to the satellite?...

Asked on 12/04/2021

2 answer

Why aren't superconductors used more in space?

The worst obstacle and the primary roadblock to using superconductors on Earth is the ambient temperature which necessitates a coolant like LN2 or even liquid Helium (and a lot of...

Asked on 11/30/2021

1 answer

Why Mars instead of a space station?

Elon Musk has made very clear that his goal is a colony on Mars. That doesn't seem ideal to me at all. Certainly some people will be happy to live...

Asked on 11/27/2021 by Gene McCulley

10 answer

Does Kepler's Method for Determining Time of flight between two True Anomalies break down with eccentricities approaching 1?

Pretty simple question here. I'm calculating time of flight between two true anomalies by converting those true anomalies to mean anomalies and using the following equation: $Delta t...

Asked on 11/27/2021 by D. Hodge

1 answer

Will uncovering the ice deposit in Utopia Planitia improve the climate on Mars?

In 2016 a large ice deposit has been found within the Utopia Planitia region on Mars by the SHARAD instrument on board of the Mars Reconnaissance Orbiter....

Asked on 11/25/2021

3 answer

How do Falcon 9 fairings survive the reentry?

SpaceX recently tried to recover fairings from falcon 9, which landed intact in the ocean. How come do these not burn up during reentry?...

Asked on 11/25/2021 by Kamil Aliyev

3 answer

How will Sherpa and Formosat-5 be configured as payload and launched?

I was reading the comments in this Reddit and I'm confused. How will Sherpa and Formosat-5 be configured inside the Fairing, and then deployed. One comment seems to...

Asked on 11/20/2021

1 answer

Where did the floatation collar and sea anchor attach to the command module?

When the recovery helicopters arrived after an Apollo splashdown, one of the first tasks was for Navy divers to attach a flotation collar and sea anchor to the spacecraft. ...

Asked on 11/20/2021

2 answer

Finned heatsinks in space

Most heat radiators in space are flat surfaces. In a sense they are single fin radiators. Has anyone studied the used of multi-finned radiators in space (the vacuum of...

Asked on 11/20/2021 by martin's

11 answer

Would a higher air pressure on the ISS or elsewhere make it easier to "swim" in microgravity?

What if the atmospheric pressure onboard the ISS was 5 atm, 5 times the pressure on Earth and currently on the ISS, while maintaining the breathable oxygen level, e.g. if...

Asked on 11/17/2021 by LoveForChrist

6 answer

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