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  Space Weather   Can we expect northern lights?         

  Earth & Sky
  Sky & Telescope Observing Highlights
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  Solar Views


Space Station

Future ISS sightings:  spaceflight.nasa.gov/realdata/sightings

Space station tracking map:  spaceflight.nasa.gov/realdata/tracking/index.html 

Photo and over view of the space station: shuttlepresskit.com/ISS_OVR  

NASA human space flight: spaceflight.nasa.gov/home/index.html 

The space station is at an altitude of 221 miles and flying at 17,212 mph.   



Photos from Astronomy Picture of the Day

2002 April 22
See Explanation.  Clicking on the picture will download
 the highest resolution version available.

Comet and Aurora Over Alaska

Credit & Copyright: Dennis Mammana (Skyscapes)

Explanation: Can you spot the comet? Flowing across the frozen Alaskan landscape is an easily visible, colorful aurora. Just to the lower left, however, well in the background, is something harder to spot: Comet Ikeya-Zhang, the brightest comet of recent years. Although the aurora faded in minutes, the comet is just now beginning to fade. It remains just barely visible without aid, however, before sunrise in the East. The comet is actually a giant dirt-covered snowball that spends most of its time in the outer Solar System -- to where it is now returns. The above photograph was taken on March 20 when Comet Ikeya-Zhang was near its brightest. Careful inspection of the photo will uncover several other sky delights, including the giant galaxy M31.


2006  January 29

 See Explanation.  Clicking on the picture will download
 the highest resolution version available.

 Volcano and Aurora in Iceland

Explanation: Sometimes both heaven and Earth erupt. In Iceland in 1991, the volcano Hekla erupted at the same time that auroras were visible overhead. Hekla, one of the most famous volcanoes in the world, has erupted at least 20 times over the past millennium, sometimes causing great destruction. The last eruption occurred only six years ago but caused only minor damage. The green auroral band occurred fortuitously about 100 kilometers above the erupting lava. Is Earth the Solar System's only planet with both auroras and volcanos?


Last Update   June  28, 2009