Expansion of the universe in real numbers. Hubble's Constant: H0 = 67.15 ± 1.2 (km/s)/Mpc from wikipedia calculate it for 13.7 billion light years and see how fast it is. It may surprise you
i just googled it and used what it said don't remember exactly where i got that from. Leonard Susskind, in a lecture said it was 42 km / second / 3 million light years I'm not sure what that works out to be in Mpc
leonard susskind describes it pretty good on youtube classic mechanics lectures from stanford university really learned a lot from his lecture heavy into math if you ask me but he says it elementary math
energy = matter at the rate of c squared e=mc2 correct or am i missing something or matter = energy at the rate of square root of c ( interchangeable )
I think i understand the magnetic field with the solid iron core and molten iron around that. A big electro-magnet the currents flowing in the churning molten iron correct?
How small would the core have to be to not protect the Earth from the solar winds?
Love the anti-gravity quote btw. Maybe I'm asking the wrong question. Wouldn't gravity prohibit life from any planet with the radius 30 % larger or smaller than earth, regardless of distance from the sun in respect to how gravity holds onto the atmosphere of the planet and all that implies?
Please forgive me. My education is lacking go easy on me.
The radius of 6378.1 km has enough gravity to hold this atmosphere in place and has a magnetic field strong enough to protect it.
1. My question is would Mars have the same atmosphere and magnetic field if it were the same radius ((+/-...