What's
the name of that star? Where's Saturn? Get the answers
from mySKY--a
fun new astronomy helper from Meade.
FANTASTIC
FLYBY:
NASA has released stunning new images taken by the New
Horizons spacecraft during its recent flyby of Jupiter.
Highlights include auroras on Io and the best-ever color
photo of Jupiter's "Little Red Spot." Get the
full
story from Science@NASA.
TWO
YEARS IN TWO SECONDS:
Take a look at tonight's full Moon--it's unique. They
all are! Laurent
Laveder has spent the last two years taking pictures
of every
full Moon over his home in France, and here is the
result:

Photo details: Canon
350D, 2x Barlow, Megrez 80/480 refractor, 1/250 s,
200 ASA
The
Moon rocks and rolls, shrinks and swells, never presenting
precisely the same face twice. "In the full-sized
animation, you'll see 2 years condensed in only 2
seconds!" says Laveder. "Sorry for the mal
de mer."
Wait
a minute. Didn't they teach us in school that the same
side of the Moon always faces Earth? That's only approximately
true. Because the Moon's
orbit is slightly elliptical (5%) and slightly tilted
(5o), we view each month's full Moon from a
slightly different distance and angle. The rocking motions
are called libration;
because of them we can observe not just 50% but rather
59%
of the Moon's surface.
ELLERMAN
BOMBS:
"I was photographing sunspot 953 this morning, when
suddenly four bright white dots just appeared in front
of my eyes from nowhere," says P-M
Hedén of Vallentuna, Sweden. "It was really
an amazing moment."
The
white dots he saw were Ellerman Bombs:

Photo details: Orion 80ED,
Canon
Digital Rebel XT, SolarMax60
filter.
Sometimes
called "microflares," Ellerman Bombs are magnetic
explosions about one-millionth as powerful as a true
solar flare. They are named after Ferdinand
Ellerman who studied the tiny blasts in the early
20th century. Of course, "tiny" is relative.
A single Ellerman bomb releases about 1026
ergs of energy--equal to ten million atomic bombs. Sunspot
953 is crackling with these blasts, which makes it very
entertaining to watch.
more
images: from
Rogerio Marcon of Campinas - Brasil; from
Jack Newton of Osoyoos British Columbia; from
Robert Arnold on the Isle of Skye, Scotland; from
Eva Seidenfaden of Trier, Germany; from
Branden Morrissette of South Portland, Maine; from
Sylvain Weiller of Saint Rémy lès Chevreuse,
France; from
Joel Bavais of Ath, Belgium;