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Joined 9 months ago
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Cake day: December 20th, 2023

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  • My understanding is that in a true vacuum light will not be reflected or bent by particles. However, due to gravity bending space time itself, light will follow the curvature of space. It would depend on the observer if the path if light is straight. If you look at the light passing by, it would not be straight under influence of gravity. If light itself is the observer, it will travel in a straight line :)

    In the case of gravitational lensing the observer is looking at light coming in. An outside perspective.



  • I agree that its not great to dump items in the ocean. But given that it is rather hard to predict exactly where it will drop, and how fast if would sink after hitting the ocean surface with significant velocity, it would take an army of boats to recover anything.

    For rockets i feel you have two large impacts to the environment, the production cost and the burned propellant. For starship the construction does not require too much harmful material i geuss. And the fuel is methane and oxygen. Methane will convert to CO2, but it does not have any nitrogen. Not as good as hydrogen + oxygen in the combustion product which only leaves water.

    Looking at environmental impact is always hard, because you need to look at the whole lifecycle. Which frankly i am too lazy to compute here. Perhaps they have performed some research into it required by some legislation.