Briefly describe the history r(t) of a cosmological model you like, giving the value of its defining parameters (e. g. ω, k, λ). explain why you prefer it; your reasons may be philosophical, theoretical, or observational.

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19