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In Reply to: Former Israeli space security chief says extraterrestrials exist posted by tweaker456 on May 7, 2021 at 12:58:14:
Whenever I hear about extraterrestrials, I get to wondering how they get here. Travel is limited to the speed of light and the energy to get a spacecraft even close to that is truly astronomical. Remember the only thing that travels at the speed of light is a photon which has no mass. Anything with mass is going to travel slower.
The fastest comet recorded was going 175000 km/hr (48 km/s) which is around 1/10000 the speed of light. If someone can come up with the physics, then I will start paying attention.
"Our head is round in order to allow our thoughts to change direction." Francis Picabia
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Follow Ups
- RE: Former Israeli space security chief says extraterrestrials exist - neolith 05/8/2110:03:51 05/8/21 (3)
- RE: Former Israeli space security chief says extraterrestrials exist - tweaker456 10:32:04 05/8/21 (1)
- RE: Former Israeli space security chief says extraterrestrials exist - neolith 11:04:10 05/8/21 (0)
- It would be a long trip... - Jay Buridan 10:23:52 05/8/21 (0)