Linked Questions

18 votes
3 answers
3k views

If one Starship can transport 100 people to Mars, how many could it safely land near Mercury's north pole after one Hohmann-like transfer?

Personally, I would rather live near Mercury's north pole than anywhere on Mars mainly because: The permanently shadowed craters harbor abundant water ice and other frozen volatile materials Mercury ...
Cornelis's user avatar
  • 7,545
23 votes
2 answers
5k views

Elon Musk's ITS Travel Time to Mars Estimate

The average travel time to Mars has been quoted to be around nine months (~ 270 days). This assumes current propulsion methods and when Mars and Earth are near each other. Musk has been quoted to say ...
FontFamily's user avatar
12 votes
1 answer
2k views

How were Wikipedia's orbital simulations made?

Pretty simple question; what software is used on Wikipedia to make these simulations? Some examples below:
hi-bye125's user avatar
  • 404
7 votes
2 answers
558 views

Was there any launch vehicle possible that could have been used for a heavier New Horizons with enough fuel to enter Pluto orbit? (adding ~10 years)

Answers to the Astronomy SE question Can New Horizons probe turn back and start orbiting Pluto are of course no, it would have to have been a different mission with a lot more fuel and a bigger launch ...
uhoh's user avatar
  • 149k
6 votes
2 answers
275 views

Starting refueled in LEO, how much payload could a heat-protected Starship softly land on Mercury after a gravity assist from Venus?

This question may be a crucial follow-up to this one because in this answer it is calculated that the payload to Mercury without a gravity assist would probably be minimal, so if already a moderate ...
Cornelis's user avatar
  • 7,545
12 votes
1 answer
576 views

Could SpaceX's Starship's landing and restart process work on Titan?

Gravity on Saturn's moon Titan is much weaker and the atmosphere is far denser than either Earth's or Mars', which Starship seems to have been designed for. Could an unmanned Starship do an Earth-...
HannesH's user avatar
  • 223
5 votes
3 answers
534 views

How fast could we go back to Uranus and Neptune?

Since SpaceX is making everything so much cheaper to launch into space. If we launch a pair of orbiters to Uranus and Neptune, how fast could they get there? They could be really light and small, so ...
BT_Cribo's user avatar
5 votes
2 answers
410 views

Would it be practical to fly a probe to Mars using gravitational assistance from Venus?

I decided to fly to Mars in KSP using a slingshot of Venus to see if I could save fuel. Since Venus is closer to Earth, you need less fuel to get there. When I tested it I used less fuel, but the ...
The Rocket fan's user avatar
4 votes
3 answers
264 views

How do space agencies choose arrival dates to planets (i.e. Mercury) from a gravity assist (i.e. Venus)?

Assuming I was looking for arrival opportunities from 2020 to 2030, how can I calculate the possible arrival dates to Mercury given a departure date from a gravity assist from Venus?
John's user avatar
  • 1,377
3 votes
2 answers
262 views

How are Interplanetary Transport Network/Weak Stability Boundary paths calculated?

While reading up a bit online, I found out about Weak Stability Boundaries and the Interplanetary transport network. How is this "path" that traverses the Solar System determined? I am aware ...
hi-bye125's user avatar
  • 404
3 votes
1 answer
168 views

Are there any studies on Mars-Earth ballistic cyclers taking Mars-gravity assist into account?

In studies pertaining Earth-Mars cyclers, purely ballistic cyclers are usually relegated to many orbit solutions. For instance the classic Aldrin cycler, while elegant, can't achieve the desired turn-...
Enoch's user avatar
  • 317
3 votes
1 answer
163 views

Patching two Lambert's problem solutions together

I am following this paper on the implementation of a genetic algorithm to find a good MGA trajectory. The way they approach the problem is by solving the Lambert problem for each planetary transfer. ...
ikerdc's user avatar
  • 93