- #1
donglepuss
- 17
- 4
I think it would be 
I guess you mean Mars One, not SpaceX.stefan r said:
You don't need any fuel, Sun provides the necessary acceleration - you just go on an eccentric orbit with perihelion close to Earth orbit and aphelion close to Ceres.stefan r said:
mfb said:
The headline is stupid. It is as meaningful as "[random car company] wants death volunteers for buying cars."stefan r said:
SpaceX doesn't want to fly Mars One volunteers (well, not more than any customer that is willing to pay). They probably don't care about Mars One because that project was never realistic.stefan r said:
Musk has the majority of SpaceX. He is not just CEO, it is literally his company. And it matters: If a publicly traded company decides to send a spacecraft to Mars just for R&D that might pay off in 20+ years, shareholders will protest. If Musk decides that SpaceX will do that, it will do that.stefan r said:
mfb said:
More recently:
The vast majority of commuters come home from the trip. The number that do not return may be alarming and sad but this is different.
I don't see the relevance of that quote. Musk wants to move to Mars and live there for the rest of his life. How is that related to the discussion here?
No we are not. The key point of ITS is a re-use of the spacecraft . They have to fly back to Earth. Apart from a retirement of spacecraft s after many flights, they will always have the same capacity in both ways. A large fraction of the capacity towards Mars will be used by cargo. In terms of passenger capacity, the way back has actually more than the way to Mars.stefan r said:
ITS in transit only has fuel for landing, the amount is very similar in both directions.stefan r said:
Could you please inform yourself about the very basics of the system you want to discuss? ITS produces the fuel for the return trip on Mars. Carrying the fuel for the return trip to Mars does not work with the system, the required delta_v would be way too large.stefan r said:
We don't have public numbers about the radiation shielding, but the additional lifetime cancer risk from a trip would probably be below 1%. Smoking is far more dangerous than radiation on the trip to Mars. Why do people smoke?And what does all that have to do with the comparison with a Ceres flyby?stefan r said:
Ceres and Mars have varying distances from Earth due to their unique orbits. At its closest, Mars is about 35 million miles away from Earth, while Ceres can be as close as 130 million miles. However, due to the elliptical shape of Ceres' orbit, it can also be as far as 260 million miles away from Earth, making it further than Mars.
The time it takes to travel to Ceres or Mars depends on the launch window, or the optimal time to launch a spacecraft. Typically, a manned flyby of Ceres would take about 6-8 months, while a manned mission to Mars would take around 9 months. However, the duration of the mission also depends on the spacecraft's speed, the route taken, and the amount of time spent on the surface.
A manned flyby of Ceres would face different challenges compared to a Mars landing. Some of the main challenges for a Ceres flyby include the long duration of the mission, the harsh radiation environment, and the lack of a suitable landing site. On the other hand, a Mars landing would require precision in landing, the ability to sustain human life on the surface, and the possibility of encountering hazardous conditions like dust storms.
A manned flyby of Ceres would provide a different set of scientific data compared to a Mars landing. A flyby mission would allow for a close-up look at the surface and composition of Ceres, while a Mars landing would provide the opportunity for in-depth analysis of the planet's geology, atmosphere, and potential for past or present life. Both missions would contribute to our understanding of our solar system, but in different ways.
A manned flyby of Ceres would have several potential benefits, including the opportunity for human exploration and the development of new technologies for long-duration space travel. It could also provide insights into the formation and evolution of the solar system, as well as the potential for resources on Ceres that could support future space missions. Additionally, a successful flyby mission could pave the way for future manned missions to other celestial bodies in our solar system.