The Boomerang Nebula located 5,000 light years away from our home planet is measured -457.87*F or -272.15*C in temperature. It is believed to be a star system in the constellation Centaurus.
The movement of material due to differences in density is called Convection.
Explanation:
• If new oceanic crust is being continuously created
along the earth’s spreading ridge system, then we
must find some way to re-cycle it back into the
mantle. [WHY? –otherwise the earth would be
expanding!!!!]
