The solar system includes the planet Earth, the Moon, the Sun, eight other planets and their satellites, and smaller objects, such as asteroids and comets. The path of a planet around the Sun is due to the gravitational attraction between the Sun and the planet. Scientific progress is made by asking meaningful questions and conducting careful investigations . Heat moves in a predictable flow from warmer objects to cooler objects until all objects are at the same temperature . Many phenomena on the Earth s surface are affected by the transfer of energy through radiation and convection currents .
Scientific progress is made by asking meaningful questions and conducting careful investigations .