As we prepare for yet another icy blast this week (c'mon, my bones and joints can't take much more of this), my mind goes to ...

Matter exists in different states and in some cases can be changed from one state to another. We will identify the properties of the 3 primary states of matter; solids, liquids and gases and get a ...

The amount of matter within the universe sculpts its overall ... It was just what was needed to keep the universe immobile, "as required by the fact of the small velocities of the stars," Einstein ...