3 ms·
To a first approximation, space is a vacuum. Most of the second approximation is hydrogen not helium. Yes proportionally, there’s a fair bit of helium but mos
by brudgers 4y ago
To a first approximation, space is a vacuum.
Most of the second approximation is hydrogen not helium.
Yes proportionally, there’s a fair bit of helium but most of what’s there is nothing.