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As matter becomes excited(heated) it releases photons of light. Stars do this very well through nuclear fusion. These photons are observed by us on earth.
The moon, and other planets in our solar system are close enough that they are observable via light that is reflected off of them from our own sun.
Most other planets in distant solar systems are only recently observed by observing a distance star's very subtle movement as the mass of it's orbiting planets pulls on it, much like our planet experiencing tidal flows in our oceans caused by our moon.
These very distant planets are mostly invisible to us, unless they happen to eclipse a star.
What else can I help you with?
What is the name given to the light that a torch gives out?
The light that a torch gives out is typically called a beam or a beam of light.
What is the name given to a material that gives off electrons when light strikes it?
The material is called a photoemissive material.
What is the name given to the gravitational force on an object?
The name given to the gravitational force on an object is simply called "gravity."
What name is given to reflected light?
The name given to reflected light is "reflection." This is when light waves bounce off a surface and change direction.
What is the name often given to the force exerted by the first object on a second object?
The name often given to the force exerted by the first object on a second object is the action force.
What is the name given to the light that a torch gives out?
The light that a torch gives out is typically called a beam or a beam of light.
What is the name of the amount of light a star gives off?
The amount of light a star gives off is the intensity or luminosity. Absolute Magnitude measures the amount of light given off.
What is the name given to a material that gives off electrons when light strikes it?
The material is called a photoemissive material.
What is the name given to the gravitational force on an object?
The name given to the gravitational force on an object is simply called "gravity."
What name is given to reflected light?
The name given to reflected light is "reflection." This is when light waves bounce off a surface and change direction.
What is the name often given to the force exerted by the first object on a second object?
The name often given to the force exerted by the first object on a second object is the action force.
What is the scientific name for a object that does let light through?
An object that does not allow light to pass through it is called an opaque object.
What is name given to an object slowing down?
Deceleration.
What is the name given for the push or pull of an object?
Force.
What is the name often given to the force exerted by the first object on second object?
reaction
What is the name often given to the force exerted by the second object on a first object?
reaction
What is the name given to the force exerted by the second object back on first object?
reaction.
