This will have given information on how to estimate exoplanet sizes.
Measurement of the apparent diameter of Venus during the transit, and comparison with its known diameter.Unlike the 2004 Venus transit, the 2012 transit occurred during an active phase of the 11-year activity cycle of the Sun, and would have provided practice in detecting a planet's signal around a "spotty" variable star. This will help astronomers when searching for exoplanets. Measurement of dips in a star's brightness caused by a known planet transiting a known star (the Sun).The 2012 transit gave scientists a number of research opportunities. Research Ĭhildren in Dili observing the transit of Venus This is something we've never had before". It takes images that are about 10 times better than a high-definition TV and those images are acquired at a temporal cadence of one every 10 seconds. Lika Guhathakurta said, "We get to see Venus in exquisite detail because of SDO's spatial resolution, SDO is a very special observatory. NASA's Solar and Heliospheric Observatory could not see the transit as it was not in between the Earth and the Sun at the time of the event, but high-definition images of the event were obtained by Solar Dynamics Observatory, from 36,000 km (22,000 mi) above the Earth. The transit was also observed and photographed by a flight engineer aboard the International Space Station, Don Pettit. In Hawaii, hundreds of tourists watched the event on Waikiki Beach where the University of Hawaii set up eight telescopes and two large screens showing webcasts of the transit. In Los Angeles, crowds jammed Mount Hollywood where the Griffith Observatory set up telescopes for the public to view the transit. Midway through the transit one of the NASA streams had nearly 2 million total views and was getting roughly 90,000 viewers at any given moment. There were a number of live online video streams with footage from telescopes around the world. The phenomenon was not visible from most of South America, nor from western Africa. From sunrise on 6 June, the end of the transit was visible from South Asia, the Middle East, east Africa, and most of Europe.
In North America, the Caribbean, and northwestern South America, the beginning of the transit was visible on 5 June until sunset. The entire transit was visible from the western Pacific Ocean, northwesternmost North America, northeastern Asia, Japan, the Philippines, eastern Australia, New Zealand, and high Arctic locations including northernmost Scandinavia, and Greenland.
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