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THE SUN & EARTH ARE A CONNECTED SYSTEM
Questions
How and why does the Sun vary? How does the Earth respond?
What are the impacts to humanity?
Image to the right: Our Sun, variable Star,
interacting parts Magnetic Fields, Plasmas, Energetic Particles
 The Sun's varying elements are Radiation,
Solar Wind, and Energetic Particles. The interacting parts
are Solar Wind and Energetic Particles.
Image to the Left: The Sun interacts with the Earth with
the following elements: Magnetic Fields, Atmosphere, Plasmas,
and Energetic Particles
Understand how interplanetary space and the Earth's environment
respond to solar variability with the ultimate goal of a reliable
predictive capability
Obtain scientific knowledge relevant to mitigation or accommodation
of undesirable effects of space weather effects on humans and
human technology on the ground and in space
Understand how space weather affects hardware performance
and operation in space
CONSEQUENCES
OF SPACE WEATHER
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Aeronautics
- High altitude aircraft exposure to radiation,
especially near the Poles
- Navigational and GPS interference
Astronautics
- Threat of sporadic radiation to astronauts
- Potential damage to spacecraft electronics
Science
- Understand how the Sun works
- Understand how Geospace responds to solar and heliospheric
variations
Technology Infrastructure
- Disruption/failure of communication satellites
- Power grid disruption problems/equipment failure
Climate Change
- Global temperature variations
- Predictive capability for climatic changes
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LWS OBJECTIVES
Living With a Star is a cross-cutting program whose goals and objectives
have the following links to each of the four NASA Strategic
Enterprises:
- Space Science: LWS quantifies the physics, dynamics, and behavior of
the Sun-Earth system over the 11-year solar cycle.
- Earth Science: LWS improves understanding of the effects of solar variability
and disturbances on terrestrial climate change.
- Human Exploration and Development: LWS provides data and scientific
understanding required for advanced warning of energetic
particle events that affect the safety of humans.
- Aeronautics and Space Transportation: LWS provides detailed characterization
of radiation environments useful in the design of more reliable
electronic components for air and space transportation systems.
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