The main reason we need to service Hubble is because of gyros. And you need gyros and fuel/propellent.
"As to radiation you not only get cosmic rays and solar flares but hard secondarys reflecting from the surface of the Moon."
Compared to any high orbit/deep space, the moon surface will have at least 1/2 the cosmic rays and effects from solar flares.
As far as "hard secondarys". Generally secondaries refer to charged particles that hit material [e.g. spacecraft casing] and that material creates a shower of secondary particles. So, as I understand it charged particles hitting the lunar surface would create secondaries which are mostly heading further underground. But of course some these secondaries will go in different directions, and it would a mistake to think that charged particles in general are all travelling in one direction [from up to down]. But by it's definition, for secondaries to be created you need charged particles/cosmic rays, therefore loosely speaking you could expect to have roughly 1/2 the secondaries on the Moon as you would in orbit/deep space- differing terrian could increase or decrease this and of course how something is designed will affect it.
Space/Science » in reply to re: One: gyros needed.
re: One: gyros needed.
The whole thread (40 posts)
- OK! TIt's timne to end this cosmic bogeyman BS about the hazards of lunar dust.
- Agreed! It's time to end this cosmic bogeyman BS about the hazards of lunar dust.
- re: Not sure where you are coming from. Dust on the Moon is an engineering problem yet to be solved.
- This issue was discussed in the Physics Today article.
- re: Are you trying to claim micrometeorites and cosmic rays do not hit the surface of the Moon?
- OK, you have a point there
- This issue was discussed in the Physics Today article.