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How to see Comet 2022 E3 (ZTF), the Green Comet
Everything you need to know about Comet 2022 E3 (ZTF) or the "Green Comet," which is making its first approach to Earth in 50,000 years.
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Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.
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Know the cosmos and our place within it.
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Empowering the world's citizens to advance space science and exploration.