4 ms·
They're talking about galaxy evolution in the early universe, over timescales of millions of years. Statistics measured across the (large) sample group, not wit
by perihelions 2y ago
They're talking about galaxy evolution in the early universe, over timescales of millions of years. Statistics measured across the (large) sample group, not within one galaxy. Scroll down to "It will classify galaxies according to redshift accuracy..."
- nashashmi 2y agoRight, at that scale, For a galaxy to move a fraction of a centimeter will take a thousand years. So not much will be missed in a gap of 6 months.
- queuebert 2y agoThis is nonsensical. Do you mean a tiny movement in the field of view, which should be measured in angular distance? Or do you mean actual motion through the universe, in which case the galaxies are moving at hundreds of kms per second, which means they would move billions of kms in 6 mos.
- nashashmi 2y agoYes, field of view. I am considering 1 cm to mean 2-3 light years.