Light does not have mass. Remember, as an object's speed approaches the speed of light, its mass approaches infinity, therefore it will require infinite energy to accelerate something to the speed of light, therefore only massless particles can travel at light speed.
No.
The speed of light is roughly 300,000 kilometers per second. You'll have to get your own mass.
Stars.
Light itself does not contain heat. Heat is a form of energy that is associated with the motion of particles in a material. Light, on the other hand, is a form of electromagnetic radiation that does not have mass and does not create heat on its own. However, when light is absorbed by an object, it can be converted into heat energy.
The Moon reflects the Sun's light, it has no energy of its own to create light.
an animal or living being that can create its own light.
No, the moon does not create its own light. It reflects sunlight from the Sun, which is why we see different phases of the moon as it orbits the Earth.
Fire gives off its own light and will not have its own shadow, but the smoke from a fire can create a pretty big shadow.
No, that is an incorrect definition. Luminous means creating its own light. Non-luminous just means not creating its own light. For instance the Moon is non-luminous. It *does* reflect light. It just does not create its own. Fabric also reflects light. It does not reflect it the same way a mirror does (mostly the light it reflects is scattered) but the fact that you can see the fabric even though it is not emitting light itself means it is reflecting light emitted from other objects. However, it is still non-luminous because it does not create its own light.
It will implode under its own incredible weight and create a blackhole.
Yes, a firework produces its own light through a chemical reaction inside the firework's shell. The explosion of the firework ignites various compounds that create colorful light displays in the sky.
According to the theory of relativity, as an object with mass approaches the speed of light, its momentum and energy increase significantly, but its mass remains constant. So, from the perspective of an observer, the object would appear to gain mass, but in its own frame of reference, it would not.