According to Daily Mail, this event, known as a "transit".
Mercury is passing in front of the face of the sun on Monday in a rare celestial event.
The transit began at 12:35 GMT, when the edge of Mercury appeared to touch the edge of the Sun.
This year's transit will be widely visible from most of Earth, including the Americas, the Atlantic and Pacific Oceans, New Zealand, Europe, Africa, and western Asia.
Meanwhile, scientists around the world will be using the transit to fine-tune telescopes, especially those in space that can not be adjusted by hand, according to Young.
While Mercury travels around the Sun every 88 days, it's tilted orbit means it only passes between the Earth and Sun about 13 times a century.
"Edmund Halley used a transit of Venus in 1761 and 1769 to determine the absolute distance to the Sun". The solar system's smallest planet is also the closest to the sun.
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This was stopped at Old Trafford in a United draw, but Klopp and his men didn't look back, winning the next two Premier League matches.
And do not forget to fit your telescope with an appropriate solar filter to see the show. "So far, TESS has discovered 29 confirmed exoplanets using transits-with over 1,000 more candidates being studied by scientists".
Space for Life reminds anyone who wants to take part in the event not to look specifically at the sun.
Skywatchers in Seattle look on during a brief break in the clouds to see a transit of the planet Mercury as it crosses the face of the sun on Monday.
"It can lead to serious and permanent vision damage".
NASA said: "Mercury's tiny disk, jet black and perfectly round, covers a tiny fraction of the Sun's blinding surface". "Always use a safe Sun filter to protect your eyes".
Mercury will slice an askew way left to directly over the sun Monday, entering at base left (around the 8:00 point on a clock) and leaving upper right (around the 2:00 point).