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NOT-SO-QUIET SUN:
With little warning, two
large
sunspots
have suddenly appeared near the sun's equator. Numbered 987 and
988, each is at least three times wider than Earth and growing
rapidly. So far the spots have not produced any significant eruptions,
but their potential for flares is improving. Readers, if you have
a solar
telescope, now is a good time to monitor the sun.
UPDATE: A third sunspot
is emerging near the sun's eastern limb as shown in these images
from Greg Piepol
of Rockville, Maryland; from
Pete Lawrence of Selsey, West Sussex, UK; from
P-M Hedén of Vallentuna, Sweden; and from
Stephen Ames of Hodgenville, Kentucky.
SIGHTINGS:
Last night, March 24th at 8:25 pm EDT, space shuttle Endeavour undocked
from the International Space Station. Forty-five minutes later,
the pair flew over Daytona Beach, Florida, separated by only 600
feet:

"At the time, Endeavour was performing the flyaround maneuver
at the station before pulling away," says photographer Benjamin
P. Cooper. "The two spacecraft were so close together, they
appeared as a single point of light." By the time they reached
the US west coast, however, the separation was obvious--see, e.g.,
this photo
of the split-pair disappearing behind Brian Karczewski's home satellite
dish in Hemet, California.
These double flybys will continue for the next 24+ hours as the
shuttle continues to pull away from the ISS and prepares to land
on Wednesday, March 26th. Actually, you may be able to see a triple
flyby. The ESA's Jules
Verne spacecraft is flying 2000 km ahead of the shuttle-station
combo and it streaks across the sky approximately four minutes before
Endeavour and the ISS. US and Canadian readers can find out when
to look using our new Simple
Satellite Flybys tool.
HAWAIIAN BLAST:
Around 3:00 a.m. on March 19, 2008, Hawaii's Kilauea volcano erupted
explosively for the first time since 1924. Volcano researcher Steve
O'Meara (shown below in a self portrait) was one of the last
persons to see Halemaumau, the volcano's summit crater, still intact
before the big blast:

Steve left the summit around 11:00 p.m. on March 18th shortly
after he felt the ground shake and heard solid rock crack beneath
his feet. "It was eerie," he says. "After that my
eyes were wide open." The explosion took most scientists by
surprise, though Steve's wife and fellow researcher, Donna, called
it right. After a heavy rain, she predicted an
explosive event--and that's just what happened. A follow-up
photo shows the volcano on the evening of March 19th, post-explosion,
as it continued to erupt steam and dark ash.
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