Spider - Description. 1  1: pedipalp 2: trichobothria 3: carapace of prosoma (cephalothorax) 2  15: sternum of prosoma 16: pedicel (also called pedicle) 3  Spiders are chelicerates and therefore arthropods. 4  Spiders and scorpions are members of one chelicerate group, the arachnids.
See also: Meteoroid and Meteor. A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the Earth's atmosphere and impact with the Earth's surface.
Meteoroid. A meteoroid is a small rock or particle of debris in our solar system. They range in size from dust to around 10 metres in diameter (larger objects are usually referred to as asteroids). Meteor. A meteoroid that burns up as it passes through the Earthâs atmosphere is known as a meteor.