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they're visible because the match is producing light.
The universe is around 70% dark energy (a.k.a. empty space). The rest is mostly dark matter, with a few percent for ordinary matter. That is the current scientific model.
Yes, black material absorb the most light. That's why you can't see much in a dark room; there isn't any light in a dark room, so everything appears black.
they dont its just more visible.
A dark material.
Most of it is converted into heat energy, that is ... it ceases to exist.
This ideal material is called "black body".
Fluorescent material immediately glows when exposed to ultraviolet radiation, that is it fluoresces. Phosphorescent material slowly absorbs and re-emits the radiation it absorbs. This enables phosphorescent material to absorb visible light spectra to "glow in the dark" at a later time.
No. The sun is a fairly average sized star out of billions of stars.
Because it absorbs visible light.
Visible light can be most effectively blocked using an opaque, dark-colored, solid object. A brick is only one example of an object that would qualify.
nuclear membrane
The opposite of dark matter is visible matter.
DNA is visible during mitosis (replication) when the chromosomes condense.
Dark matter is by definition not visible nor reactive to the electromagnetic force; this would exclude visible matter, including stars. One might argue that the effects which dark matter has been used to explain could be consequential to gravitational pull from ordinary stars, perhaps owing to a gross miscalculation or an incomplete understanding of gravitational force -- but this would be a different position than to say dark matter itself is stellar material.
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