by APOD Robot » Tue Sep 03, 2024 4:06 am
Quarter Moon and Sister Stars
Explanation: Nine days ago, two quite different sky icons were imaged rising together. Specifically, Earth's Moon shared the eastern sky with the
sister stars of the Pleiades cluster, as viewed from
Alberta,
Canada. Astronomical images of the
well-known Pleiades often show the star cluster's alluring blue
reflection nebulas, but here they are washed-out by the orange
moonrise sky. The half-lit Moon, known as a
quarter moon, is overexposed, although the outline of the dim lunar night side can be seen by illuminating
earthshine, light first reflected from the Earth. The
featured image is a composite of
eight successive exposures with brightnesses adjusted to match what the
human eye would see. The Moon passes
nearly -- or
directly -- in front of
the Pleaides once a month.
[url=https://apod.nasa.gov/apod/ap240903.html] [img]https://apod.nasa.gov/apod/calendar/S_240903.jpg[/img] [size=150]Quarter Moon and Sister Stars[/size][/url]
[b] Explanation: [/b] Nine days ago, two quite different sky icons were imaged rising together. Specifically, Earth's Moon shared the eastern sky with the [url=https://en.wikipedia.org/wiki/Pleiades_(Greek_mythology)]sister stars[/url] of the Pleiades cluster, as viewed from [url=https://youtu.be/COtpTM1MpAA]Alberta[/url], [url=https://en.wikipedia.org/wiki/Canada]Canada[/url]. Astronomical images of the [url=https://apod.nasa.gov/apod/ap221205.html]well-known Pleiades[/url] often show the star cluster's alluring blue [url=https://www.nasa.gov/image-article/reflection-nebula/]reflection nebula[/url]s, but here they are washed-out by the orange [url=https://apod.nasa.gov/apod/ap211010.html]moonrise[/url] sky. The half-lit Moon, known as a [url=https://science.nasa.gov/wp-content/uploads/2017/11/moon-phases-fromsse.jpg]quarter moon[/url], is overexposed, although the outline of the dim lunar night side can be seen by illuminating [url=https://apod.nasa.gov/apod/ap211018.html]earthshine[/url], light first reflected from the Earth. The [url=https://www.facebook.com/photo/?fbid=1185547962683479]featured image[/url] is a composite of [url=https://thumbs.dreamstime.com/b/cute-cat-kittens-sitting-each-other-order-dark-to-light-color-all-looking-towards-camera-isolated-white-297725989.jpg]eight successive[/url] exposures with brightnesses adjusted to match what the [url=https://www.geogebra.org/m/SjGyuKNs]human eye[/url] would see. The Moon passes [url=https://apod.nasa.gov/apod/ap180319.html]nearly[/url] -- or [url=https://apod.nasa.gov/apod/ap100326.html]directly[/url] -- in front of [url=https://apod.nasa.gov/apod/ap240129.html]the Pleaides[/url] once a month.
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