Nicely done, NASA, showing the moon illusion and the trifecta of alignments.
See another version of Janssen at kuffner-sternwarte.at/2004/Venustransit/1874 .html.
Thank you for providing definitive advice about solar safety.
The significance of the 5-point shape is that it shifts slightly anti-clockwise every 8 years, and it helps explain the frequency of the transit of Venus. An alignment in 2004 coincided with a node. 8 yrs later it is still close enough to the node for the 2012 transit. 8 yrs hence it will have shifted enough for Venus to be up the incline of its orbit, so no transit. We wait until a point of the star reaches the far node for the next transit pair. Search: Venustransit pattern paper plate
00:34 SOHO did not see Venus transit the disk of the sun, for the planet appeared to go underneath the sun from the perspective of the spacecraft (soho.nascom.nasa.gov/hotshots/2004_06_08/frames/)
02:40 Use only a #14 welding glass, not just any version of welder's glass. Eye damage can result if filter is insufficient.
03:24 The features of the sun are dynamic, so April 6 circumstances are likely irrelevant to June 5 circumstances.