http://ida.wr.usgs.gov/html/m15012/m1501228.html
I calculated the central feature to be roughly 500 metres
across.
http://www.msss.com/moc_gallery/ab1_m04/images/SP243004.html
I calculated the line running in the "1 O'clock"
position to be roughly 4.8km long.
http://qt.exploratorium.edu/mars/jpl-images/web/opportunity/pancam/2004-12-20/1P150975152EFF36CBP2693L2M1.JPG
Great how they have deigned to
give us these super black and white images again - colour seems to have gone
out of fashion.
Taken on January 2nd,
2005, check the URL below!!
Enlargement:
http://sohowww.nascom.nasa.gov/data/realtime/javagif/gifs/20050102_1230_c2.gif
This is an image from the SOHO probe, taken in January 2005. Info about
SOHO here:
http://sohowww.nascom.nasa.gov/
Search for the image
yourself on the NASA SOHO catalogue:
http://sohowww.nascom.nasa.gov/cgi-bin/realtime_query
Input a date of 20050102
(2nd Jan 2005) and choose LASCO C2. It's the image taken at 12:30