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.
Stony meteorites are called aerolites. Stony iron meteorites are called siderites, and iron meteorites are called siderolites. Meteorites made of volcanic glass are known as tektites.Before a meteorite reaches the earth it's called a meteor, and most are so small that they burn up before they land.