25
votes
Accepted
How feasible is a manned flight to Apophis in 2029 using Artemis or Starship?
There's no point in a flyby since there would be no time to conduct any meaningful measurements.
According to Wikipedia, 99942 Apophis will be going about 7 km/s relative to Earth at closest approach ...
- 976
6
votes
How feasible is a manned flight to Apophis in 2029 using Artemis or Starship?
It might be possible in theory, but it would require a dedicated development campaign. It won't happen in practice as the powers that be have no interest in doing it. Most eyes are focused on the Moon ...
- 8,752
2
votes
Do all dangerous asteroids first pass through keyholes?
Novel keyhole-less asteroids could exist
An extrasolar asteroid such as ʻOumuamua would not need to pass through a gravitational keyhole within our solar system, but the odds of a such a collision are ...
- 121
2
votes
Are there any asteroids between the Earth and the Moon which could also serve as a base
This is actually one reason why we are considering landings on the Martian moons Phobos and Deimos. Using the chart below (source), we find the $\Delta v$ budget for Deimos is 5.6 km/s, for Deimos 5.7,...
- 8,340
1
vote
Do all dangerous asteroids first pass through keyholes?
The question is a little backwards.
When we talk about a "gravitational keyhole", what we mean is we have an object that has a known orbit with some degree of uncertainty, which is going to ...
- 2,164
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