Astronomy Picture of the Day
Astronomy Picture of the Day
Discover the cosmos! [1] Each day a different image or photograph of our
fascinating universe is featured, along with a brief explanation written by a
professional astronomer.
2019 February 6
[2]
Moon and Venus Appulse over a Tree
Image Credit & Copyright: Alex Dzierba [3]
Explanation: What's that bright spot near the Moon? Venus [4] . About a week
ago, Earth's Moon [5] appeared unusually close [6] to the distant planet
Venus, an angular coincidence known as an appulse [7] . Similar to a
conjunction [8] , which is a coordinate [9] term, an appulse refers more
generally to when two celestial objects appear close together. This Moon and
Venus appulse [10] -- once as close as 0.05 degrees -- was captured [11]
rising during the early morning behind Koko [12] crater [13] on the island of
O'ahu [14] in Hawaii [15] , USA [16] . The Moon was in a crescent phase with
its lower left reflecting direct sunlight, while the rest of the Moon is seen
because of Earthshine [17] , sunlight first reflected from the Earth. Some
leaves and branches of a foreground kiawe [18] tree are seen in silhouette in
front of the bright crescent, while others, in front of a darker background,
appear white because of forward scatter [19] ing. Appulses [20] involving the
Moon typically occur several times a year [21] : for example the Moon is
expected to pass [22] within 0.20 degrees [23] of distant Saturn on March 1.
Tomorrow's picture: open space
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Authors & editors: Robert Nemiroff [35] (MTU [36] ) & Jerry Bonnell [37]
(UMCP [38] )
NASA Official: Phillip Newman Specific rights apply [39] .
NASA Web Privacy Policy and Important Notices [40]
A service of: ASD [41] at NASA [42] / GSFC [43]
& Michigan Tech. U. [44]
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Site notes:
[1] archivepix.html
[2] image/1902/MoonVenus_Dzierba_4386.jpg
[3] https://www.instagram.com/adzierba/
[4] https://solarsystem.nasa.gov/planets/venus/ov...
[5] ap160201.html
[6] ap140227.html
[7] https://en.wikipedia.org/wiki/Appulse
[8] https://en.wikipedia.org/wiki/Conjunction_(as...
[9] https://en.wikipedia.org/wiki/Right_ascension
[10] https://in-the-sky.org/news.php?id=20190131_1...
[11] https://www.instagram.com/p/BtTkm5MBEzN/
[12] http://hawaiianforest.com/wp/geological-featu...
[13] https://en.wikipedia.org/wiki/Koko_Head#/medi...
[14] https://en.wikipedia.org/wiki/Oahu
[15] https://en.wikipedia.org/wiki/Hawaii
[16] https://en.wikipedia.org/wiki/United_States
[17] https://en.wikipedia.org/wiki/Earthlight_(ast...
[18] https://en.wikipedia.org/wiki/Prosopis_pallid...
[19] https://en.wikipedia.org/wiki/Forward_scatter
[20] https://in-the-sky.org/article.php?term=appul...
[21] https://in-the-sky.org/article.php?term=appul...
[22] https://in-the-sky.org/news.php?id=20190301_1...
[23] https://www.mathsisfun.com/geometry/degrees.h...
[24] ap190205.html
[25] archivepix.html
[26] lib/apsubmit2015.html
[27] lib/aptree.html
[28] https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apo...
[29] calendar/allyears.html
[30] /apod.rss
[31] lib/edlinks.html
[32] lib/about_apod.html
[33] http://asterisk.apod.com/discuss_apod.php?dat...
[34] ap190207.html
[35] http://www.phy.mtu.edu/faculty/Nemiroff.html
[36] http://www.phy.mtu.edu/
[37] https://antwrp.gsfc.nasa.gov/htmltest/jbonnel...
[38] http://www.astro.umd.edu/
[39] lib/about_apod.html#srapply
[40] https://www.nasa.gov/about/highlights/HP_Priv...
[41] https://astrophysics.gsfc.nasa.gov/
[42] https://www.nasa.gov/
[43] https://www.nasa.gov/centers/goddard/
[44] http://www.mtu.edu/
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* Origin: FIDONet - The Positronium Repository (1:393/68)
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