The Navy Says Those UFO Videos Are Real

[qazplm135]

112. actually, no it doesn't

F=MA works just as well in a vacuum. It's not F=WEIGHT times acceleration...it's Force = MASS times acceleration.

It requires that an object have mass, it does not require gravity. It might require the Higgs Boson or whatever it is that ultimately gives particles mass, but it doesn't require gravity.

Photons don't care if they are in a gravitational field as far as how fast they accelerate (now the direction they go certainly is influenced).

I have no idea why you put it in quotations as if Newton's second law is somehow in question.

There is zero evidence that intelligent life is somehow spaced out every 5 Parsecs. A logical argument is certainly that life is likely to exist outside of our planet. Whether that life is intelligent, how often intelligent life arises, how long it lasts, all of that greater minds than you or I have been trying to figure out for awhile.

Basically, you've made up your own physical laws, you've made up your own "rule of 5 parsecs" (why not just use light years I don't know), and you've misunderstood Newton's second law to require gravity when it does not.

Humans can survive high Gs for a SHORT period of time. They cannot survive it for years. And yes, there are ways to get to an appreciable fraction of the speed of light using just our current understanding of physics. There are also a ton of barriers from shielding (both of cosmic dust and cosmic radiation) to power generation to life support to cost.

Yes, we could be alone in the galaxy. We could be the first or one of the first. It could take just this long to get a second or third generation, metal rich star with the right combination of planets and the billions of years to get past bombardments and whatnot til you finally reach an intelligent civilization. Or we could be one of many that's come and gone but destroyed themselves along the way or got destroyed by an asteroid or GRB or rogue black hole or stellar flare or rogue planet changing orbits or all sorts of dangers.

It's one thing to say...maybe, it's another to exhibit the kind of certainty some folks are exhibiting in this thread along with making up science and butchering well established scientific principles.