Though astronomers 100 years ago thought they saw "canals" on mars, images from revealed canyons and riverlike structures that are evidence that surface of mars in the ancient past. missions have flowed on the

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?