Science Objects are two hour on-line interactive inquiry-based content modules that help teachers better understand the science content they teach.This Science Object, co-developed between NASA and NSTA, is the first of four Science Objects in the Solar System SciPack.
It provides an understanding of where Earth is located in space and explores evidence used by astronomers to place Earth at this location. Earth is a relatively small planet and the third from the Sun in our solar system. The Sun is the central and largest body in the solar system. Our still-growing knowledge of the solar system comes to us in part by direct observation from Earth, including the use of optical, radio, and x-ray telescopes that are sensitive to a broad spectrum of information coming to us from space; computers that can undertake increasingly complicated calculations, find patterns in data, and support or reject theories about the origins of the solar system; and space probes that send back detailed pictures and other data from distant planets.