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Solar wind
speed: 317.2 km/sec
density: 7.3 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: B3
2214 UT Jun02
24-hr: B4
1450 UT Jun02
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 02 Jun 14
Sunspot AR2077 has a 'beta-gamma' magnetic field that harbors energy for M-class solar flares. Credit: SDO/HMI
Sunspot number: 68
What is the sunspot number?
Updated 02 Jun2014

Spotless Days
Current Stretch: 0 days
2014 total: 0 days (0%)
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%)

02 Jun 2014

The Radio Sun
10.7 cm flux: 103 sfu
explanation | more data
Updated 02 Jun 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 1
explanation | more data
Interplanetary Mag. Field
Btotal: 7.8 nT
Bz: 7.5 nT south
explanation | more data
Updated: Today at 2346 UT
Coronal Holes: 02 Jun 14
There are no large coronal holes on the Earthside of the sun. 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: 06-02-2014 11:55:05
NOAA Forecasts
Updated at: 2014 Jun 02 2200 UTC
0-24 hr
24-48 hr
01 %
01 %
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 Jun 02 2200 UTC
0-24 hr
24-48 hr
15 %
15 %
01 %
01 %
01 %
01 %
High latitudes
0-24 hr
24-48 hr
20 %
20 %
30 %
30 %
20 %
20 %
Monday, Jun. 2, 2014
What's up in space

Listen to radar echoes from satellites and meteors, live on listener-supported Space Weather Radio.

Spaceweather Radio is on the air

QUIET WITH A SLIGHT CHANCE OF FLARES: Solar activity is low. New sunspot 2077 has developed an unstable 'beta-gamma' magnetic field, prompting NOAA forecasters to boost the odds of an M-flare today to 5%. However, that's still a 95% chance of nothing happening. Unless a filament collapses (see below), the quiet should continue. Solar flare alerts: text, voice

COMET PANSTARRS K1: On August 27, 2014, Comet C/2012 K1 PanSTARRS will buzz Earth's orbit only 0.05 AU away. Unfortunately for sky watchers, Earth won't be there. Our planet will be on the other side of the sun during PanSTARRS's close approach. A better time to photograph the comet is now. UK astronomer Damian Peach took this picture from his backyard observatory in Selsey, West Sussex, on May 31st:

His picture highlights the comet's vivid green atmosphere or "coma". The verdant hue is a sign of diatomic carbon and cyanogen, two gases that grow green when illuminated by sunligght in the near-vacuum of space.

"The comet's long ion tail is still rather faint," notes Peach. To pull it out of the starry background required a 30 minute exposure with his 4-inch telecope.

PanSTARRS K1 is currently moving through Ursa Major, shining about as brightly as an 8th magnitude star. This makes it an easy target for mid-sized backyard telescopes, albeit invisible to the naked eye. Amateur astronomers who wish to image the comet can find orbital elements and an ephemeris here.

If Earth and the comet were on the same side of the sun in August, the view would be spectacular. Disappointment will be mitigated, only a little, by images from the Solar and Heliospheric Observatory. SOHO's C3 coronagraph will track the comet as it passes behind the sun (from our point of view) from August 2nd until August 16th.

Realtime Comet Photo Gallery

SOLAR ACTIVITY: With no sunspots actively flaring, the face of the sun is quiet. The edge of the sun is another matter. Amateur astronomers around the world are monitoring a bushy filament of plasma seething over the sun's southeastern limb. Sergio Castillo sends this picture from his backyard observatory in Inglewood, California:

"This gigantic prominence spreading its plasma material and gases on the limb makes an excellent target for imaging," says Castillo.

The hot gas in this prominence is held aloft by solar magnetic fields. If those fields become unstable the structure could collapse, causing an explosion when it hits the stellar surface below. This kind of explosion, which occurs without the aid of a sunspot, is called a "Hyder flare."

Readers with backyard solar telescopes are encouraged to monitor the limb for developments. Solar flare alerts: text, voice

Realtime Space Weather Photo Gallery

Realtime Meteor Photo Gallery

Realtime Aurora 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 Jun. 2, 2014, the network reported 3 fireballs.
( 3 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 June 2, 2014 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Miss Distance
2014 KF46
May 29
1.6 LD
22 m
2014 KQ75
Jun 1
3 LD
39 m
2014 KH39
Jun 3
1.1 LD
26 m
2014 KQ84
Jun 5
8.6 LD
20 m
2014 HQ124
Jun 8
3.3 LD
650 m
2011 PU1
Jul 18
7.6 LD
43 m
2002 JN97
Aug 2
61.4 LD
2.0 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.
  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...
©2010 All rights reserved. This site is penned daily by Dr. Tony Phillips.
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