2020-10-20
astr-1101
- Parker Solar Probe presentation
- Studying the Sun
- Analyze the Corona and Solar winds
- Why is the Corona hotter than the surface of the Sun?
- Why are solar winds accelerating in the Corona?
- Originally thought a probe could only reach the Sun with gravitational assist from Jupiter
- Named after Eugene Parker
- Shaped field of heliophysics
- Theorized existence of solar winds
- Designed and built at Johns Hopkins University
- Testing
- Went through acoustic testing
- 150 decibels
- Tests to make sure launch sound won't damage the probe
- Launched on a Delta IV Heavy rocket
- Heat shield in thermal vacuum
- Fluctuation of temperatures
- 2500ËšF --> -320ËšF
- Imitating airless vacuum of space
- Purple gaze test
- Lasers shot at the probe
- Testing solar panels
- Will stay electrically charged throughout the mission
- Space environment testing
- Simulation of the environment the probe will go through
- Cools to -320ËšF
- Lasts seven weeks
- Faraday cup testing
- Used IMAX projectors
- Simulated the Sun
- Could heat up to 1800ËšF
- 400 thermocouples installed for monitoring
- 6.2 million km away from the Sun
- Closest any spacecraft has ever been
- Magnetic switchbacks
- Rotation of the solar wind
- Dust free zone
- 11.3 million km --> dust start decreasing
- Recorded sounds of dust hitting the probe
- Turbulence of solar wind
- Aurorae presentation
- How auroras function
- High energy particles from Sun --> collide with neutral particles in atmospheres
- Sun's Corona --> outer space via solar wind --> Earth's magnetosphere
- Corona --> outermost layer, hottest region
- Magnetosphere --> region of space surrounding Earth where magnetic sphere is dominant
- Coronal mass ejection
- Release of plasma
- Overpowers Earth's magnetosphere
- Auroras on other planets
- Jupiter
- Only visible in infrared
- Continuous
- Saturn
- Mars
- Mythology
- Aurora (Roman)
- Eos (Greek)