Match each item to its description.

1- Neutron star --- The dense remains of a star

2- Nebula --- A large mass of gas and dust

3- Supernova --- An explosion of a star

Explanation:

1- A neutron star is a type of stellar remnant resulting from the gravitational collapse of a massive supergiant star after exhausting the fuel in its core and exploding as a supernova. As the name suggests, these stars are composed mainly of neutrons.

2- Nebulae are regions of the interstellar medium constituted by gases (mainly hydrogen and helium) as well as chemical elements in the form of cosmic dust.

3- A supernova is a stellar explosion that can manifest itself in a very remarkable way, even to the naked eye, in places on the celestial sphere where previously nothing had been detected in particular.

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explanation:

because it is and it's just life man

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.