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  1. More Images

    Transit of Mercury

    A transit of Mercury across the Sun takes place when the planet Mercury passes directly between the Sun and a superior planet. During a transit, Mercury appears as a tiny black dot moving across the Sun as the planet obscures a small portion of the solar disk. Because of orbital alignments, transits viewed from Earth occur in May or November. The last four such transits occurred on May 7, 2003; November 8, 2006; May 9, 2016; and November 11, 2019. The next will occur on November 13, 2032. A typical transit lasts several hours. Mercury transits are much more frequent than transits of Venus, with about 13 or 14 per century, primarily because Mercury is closer to the Sun and orbits it more rapidly. On June 3, 2014, the Mars rover Curiosity observed the planet Mercury transiting the Sun, marking the first time a planetary transit has been observed from a celestial body besides Earth. Wikipedia

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  2. en.wikipedia.org

    Mercury transits are much more frequent than transits of Venus, with about 13 or 14 per century, primarily because Mercury is closer to the Sun and orbits it more rapidly. On June 3, 2014, the Mars rover Curiosity observed the planet Mercury transiting the Sun, marking the first time a planetary transit has been observed from a celestial body ...
  3. skyandtelescope.org

    In addition to the Mercury-Venus transit of July 26, 69,163, they find that a total eclipse of the Sun will take place during the Venus transit of April 5, 15,232. (These dates are expressed in Dynamical Time; exact dates will depend on the changing length of Earth's day,which we can't know in advance, and on whatever calendar adjustments ...
  4. eclipse.gsfc.nasa.gov

    In contrast, the apparent diameters of the Sun and Mercury during November transits are 1937 and 10 arc-seconds, respectively. So then Mercury appears to be 1/194 the size of the Sun. A cursory examination to the table below will reveal that consecutive transits of Mercury appear to be separated by either 3.5, 7, 9.5, 10 or 13 years.
  5. eclipsewise.com

    Because Venus's orbit is considerably larger than Mercury's orbit, transits of Venus are much rarer. Indeed, only eight such events have occurred since the invention of the telescope (1631, 1639, 1761, 1769, 1874, 1882, 2004 and 2012). Transits of Venus are only possible during early December and June when Venus's orbital nodes pass across the ...
  6. eclipse.gsfc.nasa.gov

    Photograph of the Transit of Venus on 1882 Dec 06. Taken by students at Vassar College (Sky & Telescope Feb. 1961). Because Venus's orbit is considerably larger than Mercury's orbit, transits of Venus are much rarer. Indeed, only six such events have occurred since the invention of the telescope (1631,1639, 1761,1769, 1874 and 1882).
  7. jpl.nasa.gov

    In the early 1600s, Johannes Kepler discovered that both Mercury and Venus would transit the Sun in 1631. It was fortunate timing: The telescope had been invented just 23 years earlier, and the transits of both planets wouldn't happen in the same year again until 13425. Kepler didn't survive to see the transits, but French astronomer Pierre ...
  8. science.nasa.gov

    Kepler didn't survive to see the transits, but French astronomer Pierre Gassendi became the first person to see the transit of Mercury (the transit of Venus wasn't visible from Europe). It was soon understood that transits could be used as an opportunity to measure the apparent diameter - how large a planet appears from Earth - with ...
  9. jpl.nasa.gov

    In the early 1600s, Johannes Kepler discovered that both Mercury and Venus would transit the sun in 1631. It was fortunate timing: The telescope had been invented just 23 years earlier and the transits wouldn't happen in the same year again until 13425. Kepler didn't survive to see the transits, but French astronomer Pierre Gassendi became ...
  10. carnegiescience.edu

    A transit of Mercury, in which Mercury passes in front of the Sun, is an example of such phenomena that took place on November 11th, 2019 between 7:35 AM EST until 1:04 PM EST. ... Transits of Mercury and Venus these days are more interesting as a popular introduction to the beauty of astronomy and for amateur astronomers to test their ...
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