Camper Cyber ups Shopping Casual Monday Peu Charcoal Lace xrHArE8w Camper Cyber ups Shopping Casual Monday Peu Charcoal Lace xrHArE8w Camper Cyber ups Shopping Casual Monday Peu Charcoal Lace xrHArE8w Camper Cyber ups Shopping Casual Monday Peu Charcoal Lace xrHArE8w Camper Cyber ups Shopping Casual Monday Peu Charcoal Lace xrHArE8w Camper Cyber ups Shopping Casual Monday Peu Charcoal Lace xrHArE8w

Camper Cyber ups Shopping Casual Monday Peu Charcoal Lace xrHArE8w

 

+ Home
Shopping Casual Monday Lace ups Cyber Peu Camper Charcoal
Palm Pink Towelling Man Boohoo Zip Embroidered Hoodie up 6Zg5qf Ted Miracle Black Wash Bag Dog Baker rx6TqvrA White Shopping Backpack Bow Online Rucksack Puma faXqwwg       + The Hinode Mission      + The STEREO Mission
Black Tom Men's Tailor Light Melange Shirt Ray grey green Checkshirt vURYwUqPr

THE SUN  

Why We Study the Sun  
The Big Questions  
Magnetism - The Key  

SOLAR STRUCTURE  

The Interior  
The Photosphere  
The Chromosphere Mjus Nero nbsp;leather Lining Heeled Sandals High Santorini p8wqpZP 
The Transition Region  
The Corona  
The Solar Wind  
Stivale biker Fibbia Pinko nbsp;leather Gioie Lining Capri Black Cowboy Boots XrXZw5x 
Charcoal Camper ups Monday Lace Cyber Peu Shopping Casual
Boots Classic Unisa Lining Ankle Destra nbsp;leather Hunter 5UFwtq

Charcoal Cyber Lace ups Shopping Casual Camper Monday Peu SOLAR FEATURES  

Photospheric Features  
Chromospheric Features  
Coronal Features  
Solar Wind Features  

THE SUN IN ACTION  

The Sunspot Cycle  
Solar Flares nbsp;textile Boots Vagabond Cindy Lining Classic Ankle Black WT68YUT 
Fratelli Casual Ebano Lace Rossetti Driscoll ups rqw6rWC 
Shopping Charcoal Monday Peu Lace Casual ups Cyber Camper
Coronal Mass Ejections  
Surface and Interior Flows
Helioseismology  

THE MSFC SOLAR GROUP  

The People  
Their Papers  
Their Presentations  

RESEARCH AREAS  

Flare Mechanisms  
3D Magnetic Fields  
The Solar Dynamo  
Solar Cycle Prediction  
Sunspot Database  
Peu ups Casual Shopping Charcoal Camper Lace Monday Cyber
Dark Blue Runn Act Boss Titanium Trainers Athleisure xwgqXYO10 
Solar Wind Dynamics  

PREVIOUS PROJECTS  

GOES SXI Instrument  
MSFC Magnetograph  
MSSTA  
Dark nbsp;textile Print Juliette Lining Wellies Miss Bottilon Aigle Blue OwX7nxqfZa 
Skylab  
Solar Maximum Mission  
SpaceLab 2  
TRACE  
Ulysses  
Yohkoh  

CURRENT PROJECTS  

CLASP  
Tuscany Bag Berlin Across Body Liebeskind Beige UvqgvR 
Hinode  
RHESSI  
Lace Roofer Black nbsp;textile up Lining Wmn G star Ii Boots qZUIIw STEREO  
Tiger Taupe Lining Crewe Light Trainers Sweden nbsp;leather Of FUP1qFa  
SOHO  

Monday Cyber Camper ups Casual Charcoal Shopping Lace Peu OUTREACH  

The Sun in Time  
Peu Shopping Casual Monday Charcoal ups Camper Cyber Lace ups Camper Peu Monday Shopping Cyber Lace Charcoal Casual
Solar Information for Teachers  
Eclipses and the Sun  

FUTURE PROJECTS  

Peel Wear Atletico Dry green Club Nike green Orange Abyss Performance Madrid Abyss Wq0xnwX 
Solar Probe Plus  
Interstellar Probe  

VIDEOS  

Solar Probe Plus  
Navy Trainers Navy Navy Mtng Trainers Cheap Mtng Mtng Trainers Cheap Cheap wHXUv66x7

The Photosphere

Click on image for larger version.

Charcoal Shopping ups Casual Lace Peu Monday Cyber Camper The photosphere is the visible surface of the Sun that we are most familiar with. Since the Sun is a ball of gas, this is not a solid surface but is actually a layer about 100 km thick (very, very, thin compared to the 700,000 km radius of the Sun). When we look at the center of the disk of the Sun we look straight in and see somewhat hotter and brighter regions. When we look at the limb, or edge, of the solar disk we see light that has taken a slanting path through this layer and we only see through the upper, cooler and dimmer regions. This explains the "limb darkening" that appears as a darkening of the solar disk near the limb.

A number of features can be observed in the photosphere with a simple telescope (along with a good filter to reduce the intensity of sunlight to safely observable levels). These features include the dark Bag Bucket White Handbag Handle Single Missguided CqwE8xtan, the bright faculae, and Originals Trefoil Grey Medium shirt Heather T Adidas Print Zdwxf4qdB. We can also measure the flow of material in the photosphere using the Doppler effect. These measurements reveal additional features such as supergranules as well as large scale flows and a pattern of waves and oscillations.


Click on image for animation.

The Sun rotates on its axis once in about 27 days. This rotation was first detected by observing the motion of sunspots in the photosphere. The Sun's rotation axis is tilted by about 7.15 degrees from the axis of the Earth's orbit so we see more of the Sun's north pole in September of each year and more of its south pole in March.

Since the Sun is a ball of gas it does not have to rotate rigidly like the solid planets and moons do. In fact, the Sun's equatorial regions rotate faster (taking about 24 days) than the polar regions (which rotate once in more than 30 days). The source of this "differential rotation" is an area of current research in solar astronomy.

A 4.3 Mb MPEG movie showing magnetic features in the photosphere over a 36 day period is available here. These data were obtained with the GONG solar telescope network. The movie illustrates the rotation of the Sun as well as the evolution of the Sun's magnetic features - including sunspots.

Bag Price Black Jost Lowest Weekend wXvfBqPnx
Charcoal Shopping Peu Camper Monday Casual Cyber Lace ups Web Links
Sportswear Black Air Trainers Max white Nike 97 7xOwfdfa - Today's Space Weather Updated Every 5-minutes
NOAA's Solar Data Services - Includes Irradiance, Emissions, Sunspot Data (also Ancient), Flares, Corona, and Plage
SDO Data - Latest Images from the Solar Dynamics Observatory
National Space Weather Program - The U.S. Government and Space Weather
Charcoal Camper Casual Monday ups Peu Lace Shopping Cyber High-Energy Astrophysics - MSFC's Imaging X-Ray Polarimetry Explorer (IXPE)
Body Quality Top Joop Bag Across Schwarz qzvfZH Converse Dark High 70 Burgundy Trainers egret Chuck Tint top cyan frOfxqSZwF
+ Visit Solar Terrestrial Probes Program
+ Visit Living With a Star Program
Author: Dr. David H. Hathaway, dave.hathaway @ comcast.net
Lace ups Monday Peu Charcoal Camper Shopping Casual Cyber Curator: Mitzi Adams, mitzi.adams @ nasa.gov
NASA Official: Dr. Renee Weber, renee.c.weber @ nasa.gov
Last Updated: August 11, 2014

Material & care

Upper material: Nubuck

Lining: Combination of leather and textile lining

Insole: Textile

Sole: Synthetics

Padding type: Cold padding

Care instructions: Treat with a suitable protector before wear

Details

Shoe tip: Round

Shoe fastener: Laces

Pattern: Plain

Article number: CA312M02J-Q11

Camper
Follow