Space on MSN2 天
Scientist image 3-million-light-year-long 'cosmic web' ensnaring 2 galaxies for 1st time
"For the first time, we could trace the boundary between the gas residing in galaxies and the material contained within the ...
BBC2 年
Light years
A light year would be an inappropriate unit of measurement in these circumstances. Earth has a diameter of approximately 12,700km. The distance from Earth to the Moon is approximately 384,400km.