Explanation:
In celebration of tonight's
Full Moon,
the first of 2007,
consider this grid of twenty Full Moons.
From upper left to lower right, the images represent every
lunation
from May 2005 through December 2006.
The consecutive Full Moons are all shown at the
same scale, so
unlike the famous Moon Illusion the
change in apparent size seen here is real.
(For example, compare early and late 2006 Full Moons.)
The change is caused by
the
variation in lunar distance due to the
Moon's significantly non-circular orbit.
A subtler change in appearance can also be noticed
on close examination, as the Moon seems to wobble and rock slightly
from one Full Moon to the next.
This effect, known as
libration, is
more dramatic and easier
to see in a
twenty
frame movie comparing these twenty Full Moons.
APOD Editor to Discuss "Best
of APOD 2006" Pictures in NYC on January 5
so 2015, 2020 müesstisch langsam is gspröch cho, wennd bi de erschte willsch si. vo vorteil bi de chinese. d'amis sind natürli au ufem weg ufe, aber dene goht viellicht denn mol de stutz us, bzw. hanget d'schönheit vo de nasa halt au chli am gschmack vom jewilige us-präsi. und wenn de ufzmol findet, de mond brüchi mer nöd, denn wär mer bi de chinese guet ufghobe. europa und russland hend glaub nöd sofort vor, go basene baue ufem möndi.
