by APOD Robot » Wed Oct 14, 2015 4:06 am
A Gegenschein Lunar Eclipse
Explanation: Is there anything interesting to see in the direction
opposite the Sun? One night last month, there were quite a few things. First, the red-glowing orb on the lower right of the
featured image is the full moon, darkened and reddened because it has entered Earth's shadow. Beyond Earth's
cone of darkness are backscattering dust particles orbiting the Sun that standout with a diffuse glow called
the gegenschein, visible as a
faint band rising from the central horizon and passing behind the Moon. A nearly horizontal stripe of
green airglow is also
discernable just above the horizon, partly blocked by blowing orange sand. Visible in the distant sky as the blue dot near the top of the image is the star
Sirius, while the central band of our
Milky Way Galaxy arches up on the image left and down again on the right. The fuzzy light patches just left of center are the
Large and
Small Magellanic
Clouds. Red
emission nebulas too numerous to mention are scattered about the sky, but are labelled in a
companion annotated image. In the image foreground is the desolate
Deadvlei region of the
Namib-Naukluft National Park in
Namibia, featuring the astrophotographer himself surveying a
land and sky
so amazing that he described it as one of the top experiences of his life.
[/b]
[url=http://apod.nasa.gov/apod/ap151014.html][img]http://apod.nasa.gov/apod/calendar/S_151014.jpg[/img] [size=150]A Gegenschein Lunar Eclipse[/size][/url]
[b] Explanation: [/b] Is there anything interesting to see in the direction [i] opposite [/i] the Sun? One night last month, there were quite a few things. First, the red-glowing orb on the lower right of the [url=http://www.astronom.cz/horalek/?p=1745]featured image[/url] is the full moon, darkened and reddened because it has entered Earth's shadow. Beyond Earth's [url=https://en.wikipedia.org/wiki/Umbra,_penumbra_and_antumbra#Umbra]cone of darkness[/url] are backscattering dust particles orbiting the Sun that standout with a diffuse glow called [url=https://en.wikipedia.org/wiki/Gegenschein]the gegenschein[/url], visible as a [url=http://apod.nasa.gov/apod/ap140114.html]faint band[/url] rising from the central horizon and passing behind the Moon. A nearly horizontal stripe of [url=http://www.universetoday.com/89688/what-is-airglow/]green airglow[/url] is also [url=http://apod.nasa.gov/apod/ap130420.html]discernable[/url] just above the horizon, partly blocked by blowing orange sand. Visible in the distant sky as the blue dot near the top of the image is the star [url=http://earthsky.org/brightest-stars/sirius-the-brightest-star]Sirius[/url], while the central band of our [url=http://mwmw.gsfc.nasa.gov/mmw_product.html]Milky Way Galaxy[/url] arches up on the image left and down again on the right. The fuzzy light patches just left of center are the [url=http://apod.nasa.gov/apod/ap150827.html]Large[/url] and [url=http://apod.nasa.gov/apod/ap100903.html]Small[/url] Magellanic [url=http://ngm.nationalgeographic.com/2011/12/magellanic-clouds/ferris-text]Clouds[/url]. Red [url=http://apod.nasa.gov/apod/emission_nebulae.html]emission nebulas[/url] too numerous to mention are scattered about the sky, but are labelled in a [url=http://apod.nasa.gov/apod/image/1510/GegenscheinEclipse_Horalek_1080_annotated.jpg]companion annotated image[/url]. In the image foreground is the desolate [url=https://en.wikipedia.org/wiki/Deadvlei]Deadvlei[/url] region of the [url=https://en.wikipedia.org/wiki/Namib-Naukluft_National_Park]Namib-Naukluft National Park[/url] in [url=https://en.wikipedia.org/wiki/Namibia]Namibia[/url], featuring the astrophotographer himself surveying a [url=https://www.youtube.com/watch?v=tM87qmRLk9c]land[/url] and sky [url=http://teboteach.weebly.com/uploads/1/2/7/6/12763652/8065828.png]so amazing[/url] that he described it as one of the top experiences of his life.
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