Is there an unlimited amount of energy and matter in space?

Talk about the 

• Trace the transfer of energy within the solar system, considering the sun as the source of energy and its various forms (light, heat,gravitational potential energy).
• Explore the composition of planets and how their material properties influence their motion, examining the roles of density, mass, and rotation.
• Investigate the relationship between energy and gravity, considering how gravitational potential energy is converted into kinetic energy as planets move in their orbits.