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.
1 Meteoroid-a small object in space. 2  This can be in many different forms and could be a comet, an asteroid, or even something that is artificial (man-made). 3  It is just a general term for anything small that is out there. 4  Meteor-when an object from space enters the Earth's atmosphere and burns up.e already went over the stuff that would be in the meteoroid category, we'll go to the next one-meteors. 1  Meteoroid-a small object in space. 2  Meteor-when an object from space enters the Earth's atmosphere and burns up. 3  Meteorite-an object that actually makes it to the Earth.