National Geographic Travelのインスタグラム(natgeotravel) - 9月26日 05時05分

Photo by @babaktafreshi / A bright meteor like this is called a fireball. Far from city lights and our artificial skyglow, in a naturally dark, starry summer night in Yosemite National Park, the Milky Way was glowing horizon to horizon, as seen in this fish-eye photograph. Most visible meteors are caused by pebble- and grain-size particles. But a fireball like this is generated by a larger walnut-size object.
Explore from Earth to the universe with me @babaktafreshi. #nature #yosemite #stargazing #twanight

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