Since when was the light we see now emanating from the quasar? Note that the distance between the Earth and the quasar is 598 Mpc.​

What is the approximate chemical composition of the solar nebula?

Are divergent boundaries responsible for tsunamis?

In russia which of these challenges affects the transportation of both petroleum products and other goods? a poorly repaired roads b harsh weather and vast distances c frozen waterways d separatist movements