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Solar wind
speed: 349.1 km/sec
density: 6.9 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: C1
1957 UT Oct07
24-hr: C1
1600 UT Oct07
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 07 Oct 14
None of these sunspots poses a threat for strong flares. Solar activity is low. Credit: SDO/HMI
Sunspot number: 86
What is the sunspot number?
Updated 07 Oct 2014

Spotless Days
Current Stretch: 0 days
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%)

Update 07 Oct

The Radio Sun
10.7 cm flux: 130 sfu
explanation | more data
Updated 07 Oct 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 3
explanation | more data
Interplanetary Mag. Field
Btotal: 4.7 nT
Bz: 2.4 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 06 Oct 14
Solar wind flowing from the indicated coronal hole could reach Earth on Oct. 7-8. Credit: SDO/AIA. posts daily satellite images of noctilucent clouds (NLCs), which hover over Earth's poles at the edge of space. The data come from NASA's AIM spacecraft. The north polar "daisy" pictured below is a composite of near-realtime images from AIM assembled by researchers at the University of Colorado's Laboratory for Atmospheric and Space Physics (LASP).
Noctilucent Clouds
Switch view: Europe, USA, Asia, Polar
Updated at: 09-02-2014 12:55:12
NOAA Forecasts
Updated at: 2014 Oct 07 2200 UTC
0-24 hr
24-48 hr
05 %
05 %
01 %
01 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2014 Oct 07 2200 UTC
0-24 hr
24-48 hr
15 %
15 %
05 %
05 %
01 %
01 %
High latitudes
0-24 hr
24-48 hr
15 %
15 %
20 %
20 %
20 %
20 %
Tuesday, Oct. 7, 2014
What's up in space

On October 8th there will be a total eclipse of the Moon. Got clouds? No problem. The event will be broadcast live on the web by the Coca-Cola Science Center.

Lunar Eclipse Live

ADVICE NEEDED: Are you an experienced photographer of lunar eclipses? You may be able to help the students of Earth to Sky Calculus. Tonight, using a helium balloon, the group will launch a Nikon D7000 to photograph the eclipse from the stratosphere. In ground tests, they have successfully photographed the un-eclipsed Moon with the camera set to F5.4, ISO 200, 1/1000s. How should these settings be adjusted, if at all, for the eclipse? Email your recommendations to Dr. Tony Phillips.

DON'T MISS THE LUNAR ECLIPSE: On Wednesday morning, Oct. 8th, there will be a total lunar eclipse. Sky watchers in the Americas, Australia and most of Asia can see the full Moon turn red as it passes through the sunset-colored shadow of Earth: visibility map. The show begins at approximately 9:15 UT (2:15 a.m. PDT) when the Moon makes first contact with the core of Earth's shadow. Totality, when the Moon is fully shadowed, begins at 10:25 UT (3:25 a.m. PDT) and lasts for nearly an hour. Resources: NASA video, animated eclipse, live webcast.

During the eclipse, the Moon will look like this:

The hue of the lunar disk may seem puzzling to some readers. Shadows are supposed to be black, yet the shadowed Moon is mostly bright red. A quick trip to the Moon explains the color:

Imagine yourself standing on a dusty lunar plain looking up at the sky. Overhead hangs Earth, nightside down, completely hiding the sun behind it. The eclipse is underway. You might expect Earth seen in this way to be utterly dark, but it's not. The rim of the planet is on fire! As you scan your eye around Earth's circumference, you're seeing every sunrise and every sunset in the world, all of them, all at once. This incredible light beams into the heart of Earth's shadow, filling it with a coppery glow and transforming the Moon into a great red orb.

Red isn't the only color, however. Sharp-eyed observers might also spot some turquoise, shown here in a photo taken by Jens Hackman during an eclipse in March of 2007:

Its source is ozone. Atmospheric scientist Richard Keen of the University of Colorado explains: "During a lunar eclipse, most of the light illuminating the moon passes through the stratosphere where it is reddened by scattering. However, light passing through the upper stratosphere penetrates the ozone layer, which absorbs red light and actually makes the passing light ray bluer." This can be seen, he says, as a soft blue fringe around the red core of Earth's shadow.

To catch the turquoise on Oct. 8th, he advises, "look during the first and last minutes of totality. The turquoise rim is best seen in binoculars or a small telescope."

Realtime Eclipse Photo Gallery

QUIET SUN: Solar activity is low, and the quiet is likely to continue. Not one of the six sunspot groups on the disk of the sun has the type of unstable magnetic field that poses a threat for strong eruptions. NOAA forecasters estimate a scant 5% chance of M-flares on Oct. 7th. Solar flare alerts: text, voice

Realtime Space Weather Photo Gallery

Realtime Aurora Photo Gallery

Realtime Comet 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

On Oct. 7, 2014, the network reported 173 fireballs.
(169 sporadics, 2 Southern Taurids, 2)

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 October 7, 2014 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Miss Distance
2014 SF304
Oct 5
1.9 LD
16 m
2014 TM
Oct 5
4.5 LD
24 m
2014 SB145
Oct 6
4.4 LD
23 m
2001 EA16
Oct 7
35.5 LD
1.9 km
2011 TB4
Oct 9
4.9 LD
34 m
2014 TR
Oct 11
9.9 LD
15 m
2010 FV9
Oct 11
8.7 LD
36 m
2014 TV
Oct 18
4.5 LD
61 m
2014 SC324
Oct 24
1.4 LD
62 m
2003 UC20
Oct 31
52.4 LD
1.0 km
2004 JN13
Nov 18
52.4 LD
4.1 km
1998 SS49
Nov 18
73.9 LD
3.2 km
2005 UH3
Nov 22
44.4 LD
1.3 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.
  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
  the underlying science of space weather
Space Weather Alerts
  more links...
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