motie

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    motie 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...

    Mar 5, 2025
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    motie 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...

    Feb 8, 2025
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    motie 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...

    Jan 25, 2025
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    motie 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...

    Jan 22, 2025
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    motie 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...

    Jan 22, 2025
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    motie reacted to Ken Fabian's post in the thread The main danger of a flight to Mars with Like.

    Crewed missions to Mars are far more hype than substance and are not even close to achievable and including return capability in my view...

    Jan 22, 2025
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    motie 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...

    Jan 22, 2025

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