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NASA Knows: How Does the Sun Behave? (Grades 5-8)
- The Sun is the largest object in our solar system and a yellow dwarf star made of hydrogen and helium gases that fuse to form helium in its core, creating its heat and light.
- The Sun goes through a solar cycle every 11 years, during which time it has a very active period called 'solar maximum' and a less active period called 'solar minimum.'
- Increased magnetic activity during solar maximum causes sunspots on the Sun's surface, while the polarization of the poles change with each cycle.
- Space weather includes phenomena like the solar wind, solar storms, and solar flares that can have real impacts on earth and in space.
- Solar wind is a stream of charged particles that flows outward from the Sun's corona, and when it reaches Earth, it interacts with its magnetic field, producing colorful auroras.
- Solar storms are caused by the Sun's magnetic fields when they snap and release a burst of energy, and they can cause power outages, radio blackouts, and disruptions in GPS signals, satellite electronics, and more.
- NASA's Parker Solar Probe was launched in 2018 on a mission to fly into the Sun's corona and make measurements. Test your knowledge of the Sun with NASA's new quiz, Kahoot!
- Resources about the Sun can be found on the NASA website.
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