Which of these are characteristics of Pluto? Select all that apply.
Pluto orbits the Sun.
Pluto is a dwarf planet.
Pluto has a round shape.
Pluto is chemically similar to Charon.
The center of Charon's orbit is within Pluto's core.

If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.

Select the word from the list that best fits the definition a mountain range in northeast central asia answer is altay shan

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?