'Red Matter' could be used to destroy one or more (armada) of the "Doomsday Machines" .
A supernova is a highly energetic and explosive event that occurs when a star reaches the end of its life cycle. It involves a rapid and violent collapse of the star's core, resulting in a burst of energy and matter being expelled into space. During a supernova, the matter is in a highly energetic and dense state, transitioning from a combination of different states of matter including plasma.
A supernova comes to existence when a white dwarf drains the matter from any companion star up to a point in wich it cannot carry anymore, and then it will first implode, and afterwards it will explode, a supernova.
A nebula contains stars and other matter; a supernova is just a large enough nova, or star that explodes at the end of its life cycle due to spent fuel
The process of building tension in a work of fiction is mostly a matter of controlling the flow of information.
The observable universe is almost entirely matter (as opposed to antimatter) so it's unlikely that a cloud of antimatter large enough to form a star could exist long enough to form a star anywhere near the solar system; it would be annihilated by collisions with neighboring normal matter. Ignoring that, though, yes, there would be differences. The ejecta of an antimatter supernova would be primarily antimatter, meaning that it would annihilate nearby normal matter and give off massive amounts of gamma radiation that would not be seen with a normal matter supernova.
If the core of a supernova explosion contains three or more solar masses of matter, it will most likely become a black hole. The gravitational force is so strong that the core collapses into a singularity, forming a black hole.
Well, a star must die eventually! Everything in the universe will be destroyed, or will just die. No matter what.
Besides solids, there are liquids and gases.
Yes & yes
The two primary sources of matter are stars and supernova explosions. Stars produce elements through nuclear fusion in their cores, while supernova explosions distribute these elements into space, where they can form new stars and planets.
A supernova is a star that has exploded into dust and gas. A white-dwarf is a small, hot, dense star nearing the end of its life, that did not have enough mass to go supernova. So the answer is "none".
Yes, besides elements and compounds, matter can exist in form of mixtures.