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It is erroneous to say we “constantly witness the effects of gravity”. This phrase has an apriori sense to it. What we actually do is observe and note events and we totally arbitrarily attribute the cause of the event to an unforeseen source that we assign the label of gravity to it, for want of a better qualifier. Imagine a ball falling down. Newton simply said that the fall of the ball was caused by an unforeseen force, and he called it gravity. The fall of the ball is not evidence that gravity exists. The only truth in this action is that the ball fell (relative to us). To say that gravity caused it to fall is a huge step from that action. A much better alternative is to offer the “law of conservation of energy” principle as the main reason why the ball fell: the ball transitioned from an area of high concentration of mechanical energy to an area of low concentration of mechanical energy”. This is the Zeroth Law of Thermodynamics.
It is also erroneous to say “(The ISS crew – – – – – – – – – -, along with the station and everything in it, are “falling” at the same rate as one another, as they orbit the Earth)”. In actuality, the crew is ACCELERATING at the same rate of acceleration as the ISS. They are falling indeed BUT they are orbiting the Earth at a constant SPEED, and ACCELERATING nonetheless! How can an object be moving at a constant speed and yet it’s observed to be accelerating you ask? That’s because by definition, if an object has an acceleration, its VELOCITY is changing but NOT necessarily its speed. Speed and Velocity describe two different forms of motion.
For those who wish to know numbers, the ISS is accelerating at 8.8 meters/second every second (28.9 feet/second every second) and orbiting the Earth at the constant speed of 7.69 kilometers per second (27,700 kilometers per hour, or 17,000 miles per hour).
An even more interesting consequence of free fall is the fact that the crew would NOT BE in ZERO-G (that is to say WEIGHTLESS), but EXPERIENCE weightlessness because they are all accelerating at the same rate and scales do not function during free fall.
I don’t think that gravity is complicated it is a static force .The large size pulls objects into its force field like dust is attacked to every object in a house.The large object pulls the dust to it because of its size has a static field that palls the tiny particles to it .
OK folks this may be deemed as hypothesis: Everything has electrons, it’s the EMF attracting objects to large masses. The large mass has the greater charge. A spaceship would undoubtedly to me attract space dust and grains of space rock ie debris. Here’s one to ponder, as spirits as we accumulate enough space dust ie star dust let’s call it. It forms a body around our EMF aura as spirits. On the bright side you can fortunately shake that star dust loose at will, well hopefully. One for the quantum folks, Earth is a living entity just like each one of us are. I’ll use my own advice I’m watching my diet.
as I reach the age of 82, I thought I’d left my inquiring mind behind – until I read the intro to “the trouble with gravity” As a Buddhist, I think I just experienced rebirth. I look forward to reading further.