http://spaceweather.com/ - Nov 27, 2014 2:36:47 AM - Dec 1, 2004 12:53:58 AM
322.3 6.9 Updated: Today at 0206 UT C3 2226 UT Nov26 C3 2226 UT Updated: Today at: 2359 UT1 5.5 2.3 Updated: Today at 0207 UT Updated at: 2014 Nov 26 2200 UTC
Updated at: 2014 Nov 26 2200 UTC
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Thursday, Nov. 27, 2014
304.8 1.9 Updated: Today at 2147 UT Updated: Today at: 2100 UT0 5.7 3.9 Updated: Today at 2148 UT
AURORA WATCH: In most places on Earth, seeing auroras is rare. In Sweden's Abisko National Park, not seeing them is even rarer. "Last night was the 10th time we have seen the auroras during the last 11 days!" reports tour guide Chad Blakley. "Our group of eight witnessed a very nice aurora display dancing over Lake Torneträsk for several hours." He photographed the display using a Nikon D600:
"For many of our guests this was the most impressive display they had ever seen," adds Blakley. "I never grow tired of sharing the excitement the first time someone sees the Northern Lights."
Tonight could be 11 out of 12. A high-speed solar wind stream is heading for Earth and it could arrive on Nov. 25-26. NOAA forecasters estimate a 25% chance polar polar geomagnetic storms during the next 24 hours.
307.6 0.8 Updated: Today at 1336 UT C1 1201 UT Nov26 Updated: Today at: 1300 UT1 5.9 south Updated: Today at 1338 UT
SPACE WEATHER BALLOON EXPLODES: On Nov. 23rd, the students of Earth to Sky Calculus launched a Space Weather Buoy to the stratosphere. Carried aloft by a suborbital helium balloon, the payload contained a pair of X-ray/gamma-ray sensors to measure cosmic radiation levels inside Earth's ozone layer. About 90 minutes after launch, this is what happened:
It's supposed to do that. As a weather balloon ascends, it expands into the rapidly thinning air high above Earth. The diameter multiplies until the growing sphere is as wide as a small house. Eventually, the rubber fabric of the balloon reaches its elastic limit, and it ruptures. If it didn't, we would never get the payload back!
This balloon exploded at an altitude of 102,986 feet. The almost-silent blast was captured by a camera looking up from the payload below. Next, a parachute opened and the payload descended to Earth, landing in a remote corner of Death Valley where an Earth to Sky recovery team retrieved it yesterday.
The students and their mentor Dr. Tony Phillips of spaceweather.com are examining the radiation data now. This is the first time they have flown two radiation sensors. Cross-calibrating the two sensors in a single flight will allow the team to fly them separately on future missions, launching multiple balloons in rapid succession to investigate the dynamics of solar storms. Stay tuned for updates.
353.8 2.5 Updated: Today at 0116 UT Updated: Today at: 2359 UT1 4.6 1.7 south Updated: Today at 0118 UT Updated at: 2014 Nov 25 2200 UTC
Updated at: 2014 Nov 25 2200 UTC
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Wednesday, Nov. 26, 2014
On November 26, 2014 there were