Question

what do supernova remnant and planetary nebulae have in common? select the three correct answers. (2 points) they contribute matter to interstellar space. they emit non - visible radiation. they have planets circling them. they are composed of matter from dying stars. they are composed only of hydrogen and helium. they are diffuse.

Explanation:

Supernova remnants and planetary nebulae are left - overs from dying stars. They release matter into interstellar space, emit non - visible radiation (like radio waves, X - rays etc.). They are not known for having planets circling them and are not composed only of hydrogen and helium, and while they can be diffuse, this is not a defining commonality.

Answer:

1. They contribute matter to interstellar space.
2. They emit non - visible radiation.
3. They are composed of matter from dying stars.