Which of these describes a nebula?(1 point) Responses star close in size to the sun star close in size to the sun cloud of gravity and pressure cloud of gravity and pressure star much larger than the sun star much larger than the sun cloud of gas and dust
The answer is "cloud of gas and dust."
What do supernova remnant and planetary nebulae have in common? Select the three correct answers.(2 points) Responses They emit non-visible radiation. They emit non-visible radiation. 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 are composed of matter from dying stars. They are composed of matter from dying stars. They are diffuse.
The three correct answers are:
- They contribute matter to interstellar space.
- They are composed of matter from dying stars.
- They are diffuse.