Cap

A cap is a flat headgear, usually with a visor. Caps have crowns that fit very close to the head. They made their first appearance as early as 3,200BC. Caps typically have a visor, or no brim at all. They are popular in casual and informal settings, and are seen in sports and fashion. They are typically designed for warmth, and often incorporate a visor to block sunlight from the eyes. They come in many shapes, sizes, and are of different brands. Baseball caps are one of the most common types of cap.

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Scientists Identify a Possible Source for Red Cap on Pluto’s Largest Moon Charon

Charon’s Red Cap at its North Pole? We Might Have an Answer

New Research Sheds Light on Origin of Charon’s Red Polar Cap

Scientists identify a possible source for Charon's red cap

Scientists identify a possible source for Charon's red cap

Scientists call for cap on production to end plastic pollution

Carbon Cap and Trade Is Set to Start in Pennsylvania--but for How Long?

Energy price cap means now might be the best time to green your home

Liquid Water Confirmed Beneath Martian South Polar Cap

The Scientific Debate Rages on: Is there Water Under Mars’ South Pole?

Brine-Ice Mixtures Exist beneath Martian South Polar Cap: Study

Liquid water beneath Martian south polar cap?

Mars 'lake' may actually be volcanic rocks buried beneath the ice cap

Poem: 'Death Cap'