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Solar wind
speed: 390.5 km/sec
density: 2.2 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: C1
2230 UT Apr25
24-hr: X1
0032 UT Apr25
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 25 Apr 14
Sunspot AR2046 poses a threat for X-class solar flares. Credit: SDO/HMI
Sunspot number: 71
What is the sunspot number?
Updated 25 Apr 2014

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%)

Update
25 Apr 2014

The Radio Sun
10.7 cm flux: 130 sfu
explanation | more data
Updated 25 Apr 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 3.0 nT
Bz: 2.9 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 25 Apr 14
There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.

Spaceweather.com 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: 02-28-2014 16:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2014 Apr 25 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
20 %
15 %
CLASS X
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 Apr 25 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
05 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
15 %
15 %
SEVERE
05 %
05 %
 
Friday, Apr. 25, 2014
What's up in space
 

Did you miss the lunar eclipse? No problem. The Coca-Cola Science Center recorded it for you. Click here to play the movie.

 
2014 Lunar Eclipse Live

MORNING PLANETS: Up before sunrise? Step outside and look east. The crescent Moon is passing close to Venus in the pre-dawn sky on April 25th and 26th. It's a beautiful way to start the day. [photos]

X-FLARE, RADIO BLACKOUT, CME: Departing sunspot complex AR2035-AR2046 erupted on April 25th at 0032 UT, producing a strong X1.3-class solar flare and an HF communications blackout on the dayside of Earth. NASA's Solar Dynamics Observatory recorded a flash of extreme ultraviolet radiation from the explosion:

The explosion also produced a CME, but because the blast site was so close to the sun's western limb, the cloud is not heading toward our planet. A movie of the CME from the Solar and Heliospheric Observatory shows the CME apparently hitting Mercury, but looks can be deceiving:

Mercury is about to transit the farside of the sun, so the CME merely passed in front of Mercury instead of hitting it. This cloud appears set to miss all of the inner planets. Geomagnetic storm probabilities remain low. Solar flare alerts: text, voice

Realtime Space Weather Photo Gallery

FEAR AND DREAD: The moons of Mars are so small, some astronomers believe they are captured asteroids. Named Phobos and Deimos (Fear and Dread), the dimunutive satellites average 17 km in diameter and are rarely seen in pictures of Mars. On April 20th, astrophotographer Peter Rosén attempted to capture both. Rate of success: 50%. Click to view his animation of Deimos in orbit:

"I knew from many unsuccessful attempts in the past that photographing Phobos and Deimos is not an easy task due to the glare from Mars," says Rosén. "I rotated my 10-inch Newtonian telescope so the moons would not be positioned in the cross of light from the spider vanes. Phobos could not be identified as it was inside the overexposed area, but Deimos was clearly shown on 2 of the exposures. This two-frame animation shows Deimos in orbit. Fortunately Deimos is staying on track :-) I also captured an image of Mars at the beginning of the session and inserted it as a reference of size and orientation."

Realtime Mars 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 Spaceweather.com.

On Apr. 24, 2014, the network reported 19 fireballs.
(15 sporadics, 4 April Lyrids)

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]

On Apr. 23, 2014, the network reported 20 fireballs.
(11 April Lyrids, 9 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 April 25, 2014 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2014 GG49
Apr 19
3.9 LD
31 m
2014 HP2
Apr 24
3.8 LD
15 m
2014 HU2
Apr 25
3.7 LD
22 m
2014 HM4
Apr 25
1.6 LD
18 m
2014 HW
Apr 27
2.1 LD
10 m
2007 HB15
Apr 28
6.7 LD
12 m
2014 HL2
Apr 28
8.8 LD
26 m
2014 HV2
Apr 29
1.4 LD
33 m
2010 JO33
May 17
4 LD
43 m
2005 UK1
May 20
36.7 LD
1.1 km
1997 WS22
May 21
47.1 LD
1.5 km
2002 JC
May 24
48.7 LD
1.4 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
Space Weather Alerts
   
  more links...
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