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notovny

For you the cosmic microwave background was emitted thirteen and a half billion years ago. For this neutrino, it was Tuesday.

Draim Tetrahedral constellation

Dream a little Draim with me.

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39 Is there a self-rounding celestial body from which an Olympian could jump into space? Jan 22 '20
23 Why do many Mars missions launch now, if the Hohmann transfer orbit is the most propellant-saving one? Jul 25 '20
8 If someone built a vacuum tunnel through the atmosphere, could you have an orbit with a sea level perigee? Jul 14 '20
6 When our Moon is hiding Mars, is it possible to create a radio communication between Earth and Mars? Dec 21 '20
6 Delta-v penalty for stopping in a distant Earth orbit versus using atmospheric reentry for braking and returning to Earth from Mars? Jul 4 '20
6 Why is the bend angle of a hyperbolic trajectory giving different results? Mar 31 '20
5 Besides hyperbolic flybys, what are all the other cases where the Oberth effect can be used? Oct 1 '19
5 How will JWST maintain its elliptical orbit around L2? Jan 11 '19
4 Has a probe ever been lost due to folding its antenna, making it unable to communicate? Aug 17 '20
4 Calculate flight path angle given semi-major axis, eccentricity and distance from the focal point May 4 '20
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