Activity for J_F_B_M‭

Type	On...	Excerpt	Status	Date
Question	—	Practical problems of near-light-speed travel A spaceship of several kilometers length is accelerating to a very high fraction of $c$ (basically as close as they can possibly get). Which problems can the machinery and the crew encounter? And as follow-up question resulting from this: Is a multiple kilometer long ship traveling at near light-s... (more)	—	almost 9 years ago
Question	—	Is a gas giant more massive than its star possible? Imagine a dwarf star and a gas giant orbiting each other around their barycenter. The gas giant does not have enough mass to ignite (but may be close to igniting). Over time, the sun loses mass due to radiation, flares and so on. Could the gas giant end up having a higher mass than the star? (If n... (more)	—	about 9 years ago
Question	—	Locations for space centres The basic question is: When is a location good enough to build a space centre on it? Some info to the function of the space-centre: The space centre has a lot of traffic, also humans. I imagine it would be good to be near major cities, but not too close (Safety) Space-crafts launch mainly into a ... (more)	—	over 10 years ago
Question	—	Is Asteroid Mining safe? So I found out that it would under certain circumstances be economic to harvest Asteroids. Given the following: Technological level is nearly similar to todays Earth. There are transportships which can carry material through any place of the solarsystem. There is a facility in the Main Asteroid Be... (more)	—	over 10 years ago
Question	—	Is Asteroid Harvesting economic? Given the approximate technology level of us Humans today. Is there enough of each material needed by our modern civilization in Asteroids to make this economic? And would the materials be used for stuff in space or brought down to the surface? Consider the following/take as given: No human is n... (more)	—	over 10 years ago