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Solar wind
speed: 360.3 km/sec
density: 14.5 protons/cm3
explanation | more data
Updated: Today at 0019 UT
X-ray Solar Flares
6-hr max: C1
2031 UT Aug27
24-hr: M2
0544 UT Aug27
explanation | more data
Updated: Today at: 2359 UT
Daily Sun: 27 Aug 15
Sunspot AR2403 has a 'beta-gamma-delta' magnetic field that harbors energy for X-class solar flares. Credit: SDO/HMI

Sunspot number: 45
What is the sunspot number?
Updated 27 Aug 2015

Spotless Days
Current Stretch: 0 days
2015 total: 0 days (0%)

2014 total: 1 day (<1%)
2013 total: 0 days (0%)
2012 total: 0 days (0%)
2011 total: 2 days (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)

Updated 27 Aug 2015


The Radio Sun
10.7 cm flux: 126 sfu
explanation | more data
Updated 27 Aug 2015

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 6 storm
24-hr max: Kp= 6
storm
explanation | more data
Interplanetary Mag. Field
Btotal: 14.0 nT
Bz: 5.5 nT south
explanation | more data
Updated: Today at 0019 UT
Coronal Holes: 26 Aug 15

Solar wind flowing from the indicated coronal hole should reach Earth on Aug. 28-29. Credit: SDO/AIA.
Noctilucent Clouds The northern season for NLCs is underway--but not for much longer. According to NASA's AIM spacecraft, noctilucent clouds are waning as August comes to a close.
Switch view: Europe, USA, Asia, Polar
Updated at: 08-23-2015 16:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2015 Aug 27 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
60 %
55 %
CLASS X
10 %
10 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2015 Aug 27 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
40 %
30 %
MINOR
25 %
10 %
SEVERE
05 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
15 %
MINOR
25 %
30 %
SEVERE
60 %
40 %
 
Friday, Aug. 28, 2015
What's up in space
 

Marianne's Heaven On Earth Aurora Chaser Tours Chasethelighttours.co.uk invites you to join them in their quest to find and photograph the Aurora Borealis. Experience the winter wonderland in the Tromsø Area.

 
Chase the Light Tours

SUNSPOT TURNS AWAY FROM EARTH: Sunspot AR2403 is approaching the western limb of the sun. Although the sunspot is no longer directly facing Earth, it still poses a threat for geoeffective explosions. As long as the sunspot remains visible, solar flares from AR2403 can potentially cause radio blackouts and radiation storms. NOAA forecasters estimate a 60% chance of M-flares and a 10% chance of X-flares on Aug. 27th. Solar flare alerts: text or voice

GEOMAGNETIC STORMING: For the past 12+ hours, Earth's polar magnetic field has been unsettled by geomagnetic storming. Around the Arctic Circle, sky watchers saw something they've been missing for months. "The first bright auroras this season appeared Aug.27th on a mild and quiet night," reports Anne Birgitte Fyhn of Tromsø, Norway:

"Lake Prestvannet was surrounded by the sound of impressed and happy students from abroad, who were watching this beautiful Northern Lights show," she says.

During the peak of the G2-class storm on Aug. 26-27, Northern Lights spilled across the Canadian border into multiple US states including Wisconsin, Michigan, Maine, and Michigan again.

Conditions favor more auroras tonight. The interplanetary magnetic field (IMF) near Earth has tipped south, a condition which opens a crack in Earth's magnetosphere. Solar wind is flowing in to fuel geomagnetic unrest around the Arctic Circle. Aurora alerts: text or voice

Realtime Aurora Photo Gallery

SPACE YEAST SURVIVE AND MUTATE: Yeast and people have a lot in common. About 1/3rd of our DNA is the same. Indeed, the DNA of yeast is so similar to that of humans, yeast can actually live with human genes spliced into their genetic code. This is why Spaceweather.com and the students of Earth to Sky Calculus have been flying yeast to the edge of space. Understanding how the microbes respond to cosmic rays could tell us how human cells respond as well. Here are three strains of yeast (one per test tube) flying 113,936 feet above Earth's surface on August 15th:

The student in the picture is Joey, a high school senior, hitching a ride to the stratosphere along with the yeast. Joey and other members of the student research team are busy measuring growth curves and mutation rates for the space-traveling yeast.

One result is already clear: Yeast are incredibly tough. En route to the stratosphere they were frozen solid at temperatures as low as -63C, and they experienced dose rates of ionizing radiation 100x Earth normal. Survival rates in some of the returning samples were close to 100%.

Photo-micrographs show that yeast mutates in the stratosphere. This image, for instance, shows a colony of white mutants alongside the normal red colonies of Saccharomyces cerevisiae (HA2):

In addition to the white mutation shown above, the students have also observed petite mutants, which are a sign of changes in the cells' mitochondrial genome. These changes are of interest to space biologists because the DNA repair mechanisms of yeast are remarkably similar to those of human beings. In particular, proteins encoded by yeast RAD genes are closely related to proteins used by human cells to undo radiation damage.

Another flight of the yeast is scheduled for this Wednesday, Aug. 26th. What mutants will emerge this time? Stay tuned!

HEY THANKS: The students wish to say thanks to Dan Salkovitz, who sponsored the August 15th balloon flight. In exchange for his generous donation of $500, they flew Dan himself to the edge of space:

Readers, if you would like to sponsor an upcoming student research flight, and see your favorite picture flown to the stratosphere, please contact Dr. Tony Phillips to make arrangements.

Realtime Space Weather Photo Gallery


Realtime Sprite Photo Gallery


Realtime Venus Photo Gallery


Realtime NLC Photo Gallery

  All Sky Fireball Network

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA's Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth's atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On Aug. 27, 2015, the network reported 18 fireballs.
(18 sporadics)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point--Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

  Near Earth Asteroids
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 ones all the time.
On August 28, 2015 there were 1607 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2015 QS8
Aug 22
5 LD
19 m
2015 QT3
Aug 28
4.2 LD
71 m
2015 PT227
Aug 29
9.7 LD
69 m
2004 BO41
Aug 31
57.3 LD
1.2 km
1991 CS
Sep 4
62.1 LD
1.4 km
2014 KS76
Sep 14
8.7 LD
22 m
2004 TR12
Sep 15
58.8 LD
1.0 km
2000 FL10
Oct 10
65.7 LD
1.9 km
2011 QD48
Oct 17
67.5 LD
1.0 km
2014 UR
Oct 18
3.8 LD
21 m
2011 SE97
Oct 18
12 LD
50 m
2001 UY4
Oct 21
58.2 LD
1.0 km
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.
  Essential web links
NOAA Space Weather Prediction Center
  The official U.S. government space weather bureau
Atmospheric Optics
  The first place to look for information about sundogs, pillars, rainbows and related phenomena.
Solar Dynamics Observatory
  Researchers call it a "Hubble for the sun." SDO is the most advanced solar observatory ever.
STEREO
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Solar and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
Daily Sunspot Summaries
  from the NOAA Space Environment Center
Heliophysics
  the underlying science of space weather
Columbia Northern High School
  Web-based high school science course with free enrollment
  more links...
 
 

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