by APOD Robot » Sun Jul 11, 2021 4:05 am
Find the Moon
Explanation: Where's the Moon? Somewhere in this image, the Earth's Moon is hiding. The
entire Moon is visible, in its completely full phase, in plain sight. Even the photographer's keen eye couldn't find it even though he knew exactly where to look -- only the
long exposure of his camera picked it up -- barely. Although by now you might be
congratulating yourself on finding it, why was it so difficult to see? For one reason, this photograph was taken during a
total lunar eclipse, when the Earth's
shadow made
the Moon much dimmer than a normal full Moon. For another, the image, taken in
Colorado,
USA, was captured just before sunrise. With
the Moon on the exact opposite side of the sky from the Sun, this meant that the Sun was just below the horizon, but still
slightly illuminating the sky. Last, as the
Moon was only about two degrees above the horizon, the
large volume of air between the camera and the horizon scattered a lot of light away from the
background Moon. Twelve minutes after this image was acquired in 2012,
the Sun peeked over the horizon and the Moon set.
[url=https://apod.nasa.gov/apod/ap210711.html] [img]https://apod.nasa.gov/apod/calendar/S_210711.jpg[/img] [size=150]Find the Moon[/size][/url]
[b] Explanation: [/b] Where's the Moon? Somewhere in this image, the Earth's Moon is hiding. The [url=https://apod.nasa.gov/apod/ap210222.html]entire Moon[/url] is visible, in its completely full phase, in plain sight. Even the photographer's keen eye couldn't find it even though he knew exactly where to look -- only the [url=https://apod.nasa.gov/apod/ap110717.html]long exposure[/url] of his camera picked it up -- barely. Although by now you might be [url=https://static.onecms.io/wp-content/uploads/sites/20/2021/01/25/cat-birthday.jpg]congratulating yourself[/url] on finding it, why was it so difficult to see? For one reason, this photograph was taken during a [url=https://apod.nasa.gov/apod/ap111214.html]total lunar eclipse[/url], when the Earth's [url=https://apod.nasa.gov/apod/ap111215.html]shadow[/url] made [url=https://solarsystem.nasa.gov/moons/earths-moon/overview/]the Moon[/url] much dimmer than a normal full Moon. For another, the image, taken in [url=https://en.wikipedia.org/wiki/Colorado]Colorado[/url], [url=https://en.wikipedia.org/wiki/U.S._state]USA[/url], was captured just before sunrise. With [url=https://apod.nasa.gov/apod/ap171203.html]the Moon[/url] on the exact opposite side of the sky from the Sun, this meant that the Sun was just below the horizon, but still [url=https://en.wikipedia.org/wiki/Twilight]slightly illuminating[/url] the sky. Last, as the [url=https://apod.nasa.gov/apod/ap180624.html]Moon[/url] was only about two degrees above the horizon, the [url=https://en.wikipedia.org/wiki/Air_mass_(astronomy)]large volume of air[/url] between the camera and the horizon scattered a lot of light away from the [url=https://apod.nasa.gov/apod/ap200322.html]background Moon[/url]. Twelve minutes after this image was acquired in 2012, [url=https://solarsystem.nasa.gov/solar-system/sun/overview/]the Sun[/url] peeked over the horizon and the Moon set.
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