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SLIGHT CHANCE OF
FLARES: New sunspot AR1682 has
a 'beta-gamma' magnetic field that harbors energy
solar flares. NOAA forecasters estimate a 10% chance
of an eruption.
Solar flare alerts: text,
There is an active sunspot on the farside of the
sun. Yesterday, Feb. 25th, it blasted a coronal
mass ejection (CME) over the sun's northwestern
limb, shown here in a movie from the Solar and Heliospheric
model of the CME prepared by analysts at the
Goddard Space Weather Lab shows that the CME will
miss everything--no planets are in the line of fire.
NASA's STEREO-Ahead spacecraft is
stationed over the farside of the sun, almost directly
above the CME. Images from the spacecraft pinpointed
the source of the blast: It is active sunspot AR1678,
which rotated off the Earthside of the sun just
a few days ago.
Space Weather Photo Gallery
According to folklore, last night's full Moon was
the "Snow Moon," so-called to mark the
heavy snows of February. Göran Strand of Östersund,
Sweden, photographed the moonrise and wrapped his
images into a 360-degree self-portrait of snowy
"To visualize the Snow Moon,
a friend and I decided to go for a walk out on a
big lake, covered with snow, so that I could create
a snowy planet matching the snowy moon," says
Strand. "As we stood there watching the moon,
a mist blew in from the south, adding some 'atmosphere'
to the composition."
More moonshots from last night may
be found in the realtime gallery:
Full Moon Photo Gallery
Aurora Photo Gallery
Comet Photo Gallery
Noctilucent Cloud Photo Gallery
[previous years: 2003,
Potentially Hazardous Asteroids (PHAs
are space rocks larger than approximately 100m that
can come closer to Earth than 0.05 AU. None of the
known PHAs is on a collision course with our planet,
although astronomers are finding new
all the time.
February 26, 2013 there were 1381
potentially hazardous asteroids.
Notes: LD means
"Lunar Distance." 1 LD = 384,401 km, the distance
between Earth and the Moon. 1 LD also equals 0.00256
AU. MAG is the visual magnitude of the asteroid on
the date of closest approach.
official U.S. government space weather bureau
first place to look for information about sundogs,
pillars, rainbows and related phenomena.
call it a "Hubble for the sun." SDO
is the most advanced solar observatory ever.
views of the sun from NASA's Solar and Terrestrial
and archival images of the Sun from SOHO.
the NOAA Space Environment Center
underlying science of space weather