New answers tagged

4 votes
Accepted

Will a human mission to Mars require artificial gravity?

Micro-gravity is Probably Not a Show Stopper I'm highly skeptical of Musk's claims at this point, especially regarding any kind of timeline, but I don't think a micro-gravity only trip to Mars is out ...
codeMonkey's user avatar
  • 1,603
1 vote

How can you warm up Mars?

The easiest way to warm Mars is by adding artificial greenhouse gases to the atmosphere. These would be manufactured in-situ. They could potentially trigger a runaway greenhouse effect, increasing CO2 ...
Galerita's user avatar
  • 902
2 votes

How realistic are the required fluorine mining quantities for terraforming Mars compared to the real mining practices on Earth?

There is little I can add to this superb answer, so please vote it up! I wanted to add a slightly different perspective, which hopefully will contribute to the discussion. To me the answer can be ...
Galerita's user avatar
  • 902
0 votes

How does time work on other planets?

Very prescient question! In April of 2024, the US White House directed NASA to answer this question for the Moon, and define a workable definition and operational plan for LTC: Coordinated Lunar Time. ...
nealmcb's user avatar
  • 711
6 votes
Accepted

On what calculations is Robert Zubrin's assertion that Mars could be warmed by 10 ⁰ C in 50 years with fluorocarbon gases based?

I find Zubrin frustrating because he doesn't reference the material he includes in The Case for Mars, even though the science is almost entirely other people's work. (I was an acolyte and have an ...
Galerita's user avatar
  • 902
1 vote

Asteroid orbiting between Earth and Mars as ferry?

One would most likely want to lasso a water-ice comet like 238P. The H2-O2 fueled rockets would carry nuclear reactors, water mining equipment, and H2O splitter. They would plug into the "gas ...
SublimeDelusion's user avatar
-6 votes

Asteroid orbiting between Earth and Mars as ferry?

It's certainly feasible once we get adequate space infrastructure to convert an asteroid or two into a ferry between Earth and Mars. Such a ferry could be a mobile spacestead (a spacestead is ...
Aristocratic Jack's user avatar
2 votes

Can I move Hyperion to Mars with fusion rockets?

Yes it's possible, but there are some shattering implications - quite literally - that would make great plot elements. Let's see how Dr Verina von Braun will enable humankind to make its next great ...
Galerita's user avatar
  • 902
3 votes

How feasible is dragging a 1 km asteroid into Mars orbit? (For All Mankind Spoiler Alert)

These are some of my thoughts. Feel free to correct me! There's almost no chance of perturbing a Jupiter Trojan into an Mars crossing orbit. That requires a Jupiter-Mars transfer orbit (delta-V ~ 2.7 ...
Galerita's user avatar
  • 902
11 votes

Could we make space roads? Like a space elevator between planets?

The trouble you're going to run into there is that the planets spin and move, which makes it hard to have a road or whatever in place. It's a little like trying to build a tower to reach an airplane ...
Darth Pseudonym's user avatar
4 votes

Has there ever been an attempt or serious consideration for spacecraft to land on Mars without an ablative-type heat shield?

All successful and attempted landings on Mars to date have used ablative heat shields. NASA shields have all been variants of phenolic impregnated carbon, sometimes with and oxide coating. The ESA ...
Galerita's user avatar
  • 902

Top 50 recent answers are included