"Occulting binary". The word "occult" means hidden or in shadows; if a binary star's orbital plane happens to be exactly through the Earth's path, we might see two stars when they're separate and then see one of the stars disappear behind (or in front of) the other.
A dimming light from one heavenly body by another is called an eclipse. This occurs when one celestial object moves into the shadow of another, causing a decrease in brightness or visibility. Examples include solar eclipses, where the Moon blocks the Sun's light, and lunar eclipses, where the Earth blocks the Sun's light from reaching the Moon.
It is called a shadow. When an object blocks the path of light, it creates a shadow on the surface behind it due to the absence of light in that particular area.
Eclipse of the moon.
A Solar Eclipse
A shadow is a dark area created when an object blocks light from reaching a surface. Shadows are formed when an object obstructs the path of light, causing a shadow to appear on the opposite side of the light source.
That's an 'eclipsing binary'.
A dimming light from one heavenly body by another is called an eclipse. This occurs when one celestial object moves into the shadow of another, causing a decrease in brightness or visibility. Examples include solar eclipses, where the Moon blocks the Sun's light, and lunar eclipses, where the Earth blocks the Sun's light from reaching the Moon.
When one celestial body blocks the light from another, it is called an eclipse. In a solar eclipse, the Moon passes between the Earth and the Sun, obscuring the Sun's light. Conversely, in a lunar eclipse, the Earth blocks sunlight from reaching the Moon. Eclipses can provide valuable insights into astronomical phenomena and the positions of celestial bodies.
It is called a shadow. When an object blocks the path of light, it creates a shadow on the surface behind it due to the absence of light in that particular area.
Eclipse of the moon.
A Solar Eclipse
That happens in an "eclipsing binary".
Its an opaque object.
A translucent material transmits some light while diffusing it, allowing some light to pass through but scattering it in different directions. This results in partial visibility through the material, as it both transmits and blocks some light.
A shadow is a dark area created when an object blocks light from reaching a surface. Shadows are formed when an object obstructs the path of light, causing a shadow to appear on the opposite side of the light source.
A material that blocks all light completely is called opaque. Opaque materials do not allow any light to pass through them, creating a complete barrier to vision.
When the moon blocks the sun's light, or the Earth blocks the light from the sun that strikes the moon, it's called an eclipse. For an arbitrary body passing in front of another one, the term astronomers usually use is "occultation".