Memory Game Astronomy Memory GameOnline version Astronomy Memory Game by Grant Studios Hydrogen and Helium make up most of the suns mass In the convection zone plasma rises as it heats up then falls According to Keplers first law planets orbit in a Ellipse Sunspots are cooler than the plasma around them Atoms are combined into heavier elements through the process called Nuclear Fusion In the core is where fusion of hydrogen occurs in the sun According to Keplers first law planets orbit in a Ellipse A solar prominence (also known as a filament when viewed against the solar disk) is a large, bright feature extending outward from the Sun's surface In the core is where fusion of hydrogen occurs in the sun A planets revolution is the slowest when furthest from the sun In the convection zone plasma rises as it heats up then falls The "p" in Keplers third law stands or Orbital Period Sunspots are cooler than the plasma around them The "p" in Keplers third law stands or Orbital Period Hydrogen and Helium make up most of the suns mass The "r" in Keplers third law stand for Radius A solar prominence (also known as a filament when viewed against the solar disk) is a large, bright feature extending outward from the Sun's surface The "r" in Keplers third law stand for Radius Atoms are combined into heavier elements through the process called Nuclear Fusion A planets revolution is the slowest when furthest from the sun