Memory Astronomy Memory GameVersion en ligne Astronomy Memory Game par Grant Studios The "r" in Keplers third law stand for Radius In the convection zone plasma rises as it heats up then falls In the core is where fusion of hydrogen occurs in the sun Sunspots are cooler than the plasma around them Hydrogen and Helium make up most of the suns mass A planets revolution is the slowest when furthest from the sun 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 Hydrogen and Helium make up most of the suns mass In the core is where fusion of hydrogen occurs in the sun Atoms are combined into heavier elements through the process called Nuclear Fusion Sunspots are cooler than the plasma around them According to Keplers first law planets orbit in a Ellipse Atoms are combined into heavier elements through the process called Nuclear Fusion The "r" in Keplers third law stand for Radius In the convection zone plasma rises as it heats up then falls The "p" in Keplers third law stands or Orbital Period The "p" in Keplers third law stands or Orbital Period According to Keplers first law planets orbit in a Ellipse A planets revolution is the slowest when furthest from the sun 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