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What do supernova remnant and planetary nebulae have in common? Select the three correct answers.(2 points)

Responses

They have planets circling them.
They have planets circling them.

They contribute matter to interstellar space.
They contribute matter to interstellar space.

They are composed only of hydrogen and helium.
They are composed only of hydrogen and helium.

They emit non-visible radiation.
They emit non-visible radiation.

They are diffuse.
They are diffuse.

They are composed of matter from dying stars.

1 answer

The three correct answers regarding what supernova remnants and planetary nebulae have in common are:

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

Note: While they are diffuse, this characteristic is not universally applicable to both types of structures, hence it's not selected as a commonality. They are also not exclusively composed of hydrogen and helium, as planetary nebulae can contain a variety of other elements formed during nuclear fusion in the dying star.