Here's the entire 7-hour transit of Venus across the face of the Sun - shown in several views - in just 39 seconds, as seen by the Solar Dynamics Observatory on June 5, 2012. This view is in the 171 Angstrom wavelenth, so note also the the bright active region in the northern solar hemisphere as Venus passes over, with beautiful coronal loops visible. The transit produced a silhouette of Venus n the Sun that no one alive today will likely see again. With its specialized instruments SDO's high-definition view from space provides a solar spectacular!
Scott Wiessinger from NASA Goddard's Scientific Visualization Studio wrote this morning to tell us, "If you have the space and the bandwidth, I really recommend downloading this large file on the SVS to view. YouTube compression is hard on solar footage, so it looks even better when you watch it at true full quality."
Below is a composite image from SDO of Venus' path across the Sun, as well as another great timelapse view from ESA's PROBA-2 microsatellite:
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© NASA/SDO
SDO's Ultra-high Definition View of 2012 Venus Transit |
This movie shows the transit of Venus as seen from SWAP, a Belgian solar imager onboard ESA's PROBA2 microsatellite. SWAP, watching the Sun in EUV light, observes Venus as a small, black circle, obscuring the EUV light emitted from the solar outer atmosphere - the corona - from 19:45UT onwards (seen on the running timer on the video). At 22:16UT - Venus started its transit of the solar disk.
Venus appears to wobble thanks to the slight up-down motion of Proba-2 and the large distance between the satellite and the Sun.
The bright dots all over the image, looking almmost like a snow storm, are energetic particles hitting the SWAP detector when PROBA2 crosses the South Atlantic Anomaly, a region where the protection of the Earth magnetic field against space radiation is known to be weaker.
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