Albedo
The proportion of light reflected by a planet is known as its albedo. Albedo is a measure of how much sunlight is reflected by an object, with values ranging from 0 (no reflection) to 1 (total reflection). Planets with higher albedos appear brighter as they reflect more light.
The name of the fraction of light reflected off a celestial object is its albedo. The moon has an albedo of around 0.12 which is to say about 12% of the light that falls on it gets reflected (some sources say as low as 7%) - meaning it's pretty dark. Enceladus, a moon of Saturn, has an albedo of about 0.99.
Planets do not generate their own light. They appear to glow because they reflect sunlight off their surfaces. The amount of light reflected depends on the planet’s composition, size, and distance from the sun. This reflected light is what we see from Earth as the planet's glow.
if you mean the small shadow, its the penumbra
. . . or from any heavenly body is called albedo.
albedo
The proportion of light reflected by a planet is known as its albedo. Albedo is a measure of how much sunlight is reflected by an object, with values ranging from 0 (no reflection) to 1 (total reflection). Planets with higher albedos appear brighter as they reflect more light.
The term for the percentage of light reflected by something is called "reflectance." Reflectance measures the proportion of light that is reflected by a surface compared to the total amount of light that shines on it.
A planet's reflectivity is called its albedo, which is a measure of how much sunlight is reflected by the planet's surface. A high albedo means more light is reflected, while a low albedo means more light is absorbed. Albedo can affect a planet's climate by influencing its temperature.
The name of the fraction of light reflected off a celestial object is its albedo. The moon has an albedo of around 0.12 which is to say about 12% of the light that falls on it gets reflected (some sources say as low as 7%) - meaning it's pretty dark. Enceladus, a moon of Saturn, has an albedo of about 0.99.
The light which enters is called the incident ray and the reflected light is called the reflected ray.
It's by analzying the spectrum of light reflected off the planet, through a method called spectroscopy. Different elements absorb light energy at different wavelengths, and re-emit light at specific, well-characterized wavelengths. By analyzing the light reflected off a planet, scientists can work out the most abundant elements in its atmosphere.
The ray that represents the light reflected by a surface is called the reflected ray.
A mirror
A line of reflection is a reflected line, often off of a mirror. If a flashlight sends a beam of light at a mirror (the light is called the incident beam), the angle at which it hits the mirror will equall the angle at which the reflected beam of light (called the reflected beam), exits the mirror. This is called the Law of Reflection. This is why light is reflected from a mirror at the same angle at which light struck its surface. A line of reflection is a reflected line, often off of a mirror. If a flashlight sends a beam of light at a mirror (the light is called the incident beam), the angle at which it hits the mirror will equall the angle at which the reflected beam of light (called the reflected beam), exits the mirror. This is called the Law of Reflection. This is why light is reflected from a mirror at the same angle at which light struck its surface.
The angle is called the reflected angle.
Reflected light.