NASA Goddard
@NASAGoddard
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가입 February 2009
144 팔로잉 중 931.5K 팬
No shade, but are you ready for the total solar eclipse on August 12?
In this Goddard Glossary, dive into the difference between umbra and penumbra — two parts of the same shadow you may see as the Moon passes in front of the Sun.
Check visibility:
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