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The Heliophysics Big Year is a global  celebration of solar science

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and the Sun’s influence on Earth and throughout the solar system.

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And we want you to be a part of it.

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We challenge you to participate in as many Sun science activities as possible—

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beginning with the Annular eclipse in 2023 

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and ending with Parker Solar Probe’s closest approach to the Sun in December 2024.

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Space is increasingly part of the human domain. 

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By studying the Sun’s influence in space and its interactions with planets,

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we learn how better to protect astronauts and robotic missions from space weather,

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and to develop technology that protects the very infrastructure we rely on here on Earth,

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such as power grids and GPS signals.

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NASA’s Heliophysics Division studies the Sun’s influence on everything in our solar system,

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from the very core of the Sun to the very edge where the Sun's atmosphere meets interstellar space.

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We have 20 heliophysics missions that are operational 

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and 14 more under development. 

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The Heliophysics Big Year will highlight the work we are doing to understand our star 

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and to mitigate the effects of space weather. 

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The “Big Year” is a concept that originated with citizen scientists in the bird-watching community.

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During their Big Year, birders attempt to observe and study

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as many species as possible during a calendar year 

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and we are challenging you to do the same with our Sun.

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During the Heliophysics Big Year, you will have the opportunity to participate

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in many solar science events like watching solar eclipses,

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experiencing an aurora, participating in citizen science projects, 

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and lots of other fun Sun-related activities.

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So, please be sure to look out for opportunities to be part of our Heliophysics Big Year!

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