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Solar wind
speed: 495.7 km/sec
density: 6.8 protons/cm3
explanation | more data
Updated: Today at 1957 UT
X-ray Solar Flares
6-hr max: C2
1606 UT Mar06
24-hr: M3
0457 UT Mar06
explanation | more data
Updated: Today at: 1900 UT
Daily Sun: 06 Mar 15
The face of the sun is almost blank. Solar activity is low. Credit: SDO/HMI

Sunspot number: 31
What is the sunspot number?
Updated 06 Mar 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%)

Update 06 Mar 2015


The Radio Sun
10.7 cm flux: 124 sfu
explanation | more data
Updated 06 Mar 2015

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 4
unsettled
explanation | more data
Interplanetary Mag. Field
Btotal: 10.0 nT
Bz: 1.8 nT north
explanation | more data
Updated: Today at 1957 UT
Coronal Holes: 06 Mar 15

Solar wind flowing from the indicated coronal hole should reach Earth on March 8-9. Credit: SDO/AIA.
Noctilucent Clouds The southern season for NLCs has come to an end. The last clouds were observed by NASA's AIM spacecraft on Feb. 20, 2015. Now attention shifts to the northern hemisphere, where the first clouds of 2015 should appear in mid-May.
Switch view: Ross Ice Shelf, Antarctic Penninsula, East Antarctica, Polar
Updated at: 02-28-2015 02:55:03
SPACE WEATHER
NOAA Forecasts
Updated at: 2015 Mar 05 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
10 %
10 %
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: 2015 Mar 05 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
25 %
25 %
SEVERE
25 %
25 %
 
Friday, Mar. 6, 2015
What's up in space
 

Learn to photograph Northern Lights like a pro. Sign up for Peter Rosen's Aurora Photo Courses in Abisko National Park.

 
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DAWN SPACECRAFT ORBITS CERES: NASA's ion-propelled Dawn spacecraft made history today when it became the first probe to visit a dwarf planet. Dawn entered orbit around Ceres on March 6 at 4:39 a.m. PST. Maybe now scientists will learn what those mysterious bright spots are! Get the full story from nasa.gov.

WHAT'S AROUND THE BEND? A sunspot hidden just behind the sun's southeastern limb is crackling with solar flares. The strongest so far, an M3-class eruption on March 6th at 04:57 UT, is circled in this extreme UV image from NASA's Solar Dynamics Observatory:

A pulse of extreme UV radiation from the flare ionized the upper layers of Earth's atmosphere, causing a short-lived blackout of radio communications over Indonesia and surrounding waters: blackout map. Mariners and ham radio operators in the area would have noticed weak signals at frequencies below 10 MHz.

The source of the flare will be revealed in the days ahead as the sun's rotation turns the underlying sunspot toward Earth. Stay tuned. Solar flare alerts: text, voice

Realtime Space Weather Photo Gallery

MINI FULL MOON: You've heard of the supermoon. Last night's full Moon was the opposite--a mini Moon, smaller and dimmer than usual. The apparent size of the Full Moon changes throughout the year because the Moon's orbit is not a circle, it is an ellipse, with one side (apogee) 50,000 km farther from Earth than the other (perigee): diagram. The full Moon of March 5th was an apogee Moon.

Alan Dyer photographed the mini-Moon rising over the Santa Rita Copper Mine, near Silver City, New Mexico, "making for a coppery Moon rising over a copper mine," he says.

Some people say you cannot tell the difference between a supermoon and a mini-Moon. There are no rulers floating in the sky to measure lunar diameters, and without a reference, one full Moon looks much the same as any other.

Dyer plans to find out: "With luck," he says, "7 lunations from now I will shoot the Sept 27th perigee supermoon with the same optical setup to create a big & little Moon comparison pair."

Meanwhile, browse the photo gallery for a little moonlight.

Realtime Space Weather Photo Gallery

SPACE SEEDS: In late February, the students of Earth to Sky Calculus conducted an experiment in "space agriculture." Using a sub-orbital helium balloon, they flew a dozen varieties of garden vegatables and flowers to the edge of space. Here are three of the seed packets photographed at an altitude of 112,030 feet:

During their ascent to the stratosphere, these seeds (and 80 other packets not shown) experienced temperatures as low as -63 C, air pressures akin to those on the planet Mars, and cosmic ray dose rates 40x Earth-normal. While these "space seeds" were flying to the edge of space, identical control samples remained behind on Earth.

Students intend to plant the flown seeds side-by-side with control samples to investigate whether near-space travel affects the viability, color, size, taste or other characteristics of the plants.

Readers, would you like to grow your own space garden? For a small donation of $49.95 to Earth to Sky Calculus, you can have some of these space seeds for yourself. They make a great science fair project and, possibly, a unique meal! You may chose any two seed types from the following list: turnips, cherry tomatoes, beefsteak tomatoes, sweet corn, green beans, bell peppers, helichrysum flowers, jalapeno peppers, petunias, radishes, sunflowers, cosmos flowers, pumpkins, broccoli and carrots. We will send you flown+control packets for both of your selections. Contact Dr. Tony Phillips to place your order. All proceeds support student research.


Realtime Comet 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 Spaceweather.com.

On Mar. 6, 2015, the network reported 10 fireballs.
(10 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 March 6, 2015 there were 1556 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2015 DY198
Mar 1
2.2 LD
21 m
2015 DO215
Mar 2
3.1 LD
20 m
2015 DS53
Mar 2
3.1 LD
64 m
2015 DK200
Mar 8
6.9 LD
32 m
2063 Bacchus
Apr 7
76 LD
1.6 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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