2020 Cosmic Nights

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December 20, 2019 / 960 x 960 px
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Night Sky Network

NASA Night Sky Network
How Can You Help Curb Light Pollution?
Milan from the International Space Station in 2015. As you reach the center of the city, you can see the brightness increases.Credit: NASA/ISS

Light pollution hinders astronomers and impacts many others. Learn how to measure and reduce it with smart lighting and community education efforts inside February's Night Sky Notes article, originally published in November 2018.

Sun & Moon

Current images for ’01/29/2025’
Intensitygram image of the Sun

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