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Mmotie replied to the thread The solar system is teeming with 1 million 'alien invaders' from Alpha Centauri.The universe is a big blender. Galaxies collide. All of the heavy elements on Earth come from supernova explosions a long time ago...
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Mmotie replied to the thread Astronomers discover 196-foot asteroid with 1-in-83 chance of hitting Earth in 2032.Do we have the tech to bomb an asteroid? The timing of the detonation would have to be accurate to a few milliseconds, assuming a...
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Mmotie reacted to danR's post in the thread Electric spacecraft propulsion may soon take a leap, thanks to new supercomputer with
Like.
" The plume of ions jetting out from the spacecraft therefore acts to provide thrust." Not quite. Once they are expelled, as with a... -
Mmotie reacted to Catastrophe's post in the thread Beam me to the stars: Scientists propose wild new interstellar travel tech with Like.
A problem with star travel, is that, unless you are just going to whiz by at interstellar speeds (bit of a wasted journey?) you must...
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Mmotie replied to the thread The main danger of a flight to Mars.Yes, land on Phobos. Do not land on Mars. Mission risk, fuel needs, and cargo needs are much less. Syncing to its rotation could be...
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MCrewed missions to Mars are far more hype than substance and are not even close to achievable and including return capability in my view...
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Mmotie replied to the thread Beam me to the stars: Scientists propose wild new interstellar travel tech.Why do they need propellant or reaction mass? The electron beam collides with the back of the spacecraft, and transfers its momentum to...
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Mmotie replied to the thread Are James Webb Space Telescope images really that colorful?.Even with one pixel, you can do spectroscopic analysis of the light. Let's say water is blue and soil is gray. You can resolve those...
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Mmotie replied to the thread Are James Webb Space Telescope images really that colorful?.I believe the angular resolution of JWST is roughly 0.05 arc-second. 0.05arc-sec = 1.3889e-5deg. Then tan(0.05arc-sec) = 2.424e-7...
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Mmotie replied to the thread James Webb Space Telescope sees little red dots feeding black holes: 'This is how you solve a universe-breaking problem.Even worse, the "fudge factors" like dark matter and dark energy make up most of the equations, not just a tiny percentage.
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Mmotie replied to the thread Food grows better on the moon than on Mars, scientists find.Whenever you see a picture of a greenhouse on Mars or the Moon, just smile and ignore it. It's just eye candy for the masses...
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Mmotie reacted to contrarian's post in the thread Food grows better on the moon than on Mars, scientists find with Like.
The whole idea of human settlements on the Moon or Mars is remarkably stupid. The cost for getting things up and running are, to say the...
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Mmotie reacted to Galacsi's post in the thread Food grows better on the moon than on Mars, scientists find with Like.
This is a very bad post. Written by somebody that does not know anything in agriculture, and on the subject. A very shallow piece.
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