Nobody Cares! (Science & Tech Edition)


Well-known member
Sep 21, 2018
SLU Posts
Perseverance landing video:

There are four satellites in orbit that are being used to relay data from Mars to Earth. Each "pass" delivers 100-700 MB, due to varying paths across the sky relative to the rover. It took about two days to relay these videos, in addition to other rover data.

Five total cameras were used. Two looking up from the backshell to the parachute, one looking down from the skycrane, and two looking up and down from the rover itself.


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Sep 22, 2018
Moonbase Caligula
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Joined SLU
SLU Posts
A pair of researchers at Applied Physics has created what they describe as the first general model for a warp drive, a model for a space craft that could travel faster than the speed of light, without actually breaking the laws of physics. Alexey Bobrick, and Gianni Martire have written a paper describing their ideas for a warp drive and have published it in IOP's Classical and Quantum Gravity.
Bobrick and Martire start with the idea of an Alcubierre warp drive, a concept developed by Miguel Alcubierre in 1994—he envisioned it as spacecraft that could contract space time in front of the vehicle while expanding it behind the craft. But such a craft would require a massive amount of negative energy, which would not be feasible for a real spacecraft. Bobrick and Martire suggest instead that a massive gravitational force could be used to bend space time. The trick is finding a way to compress a planet-sized mass to a manageable spacecraft-module size in order to use its gravity.

Oh, is that all it takes? Here's the paper: Introducing physical warp drives - IOPscience