In this composite image provided by NASA, the planet Mercury passes directly between the sun and Earth on May 9, 2016 in a transit which lasted seven-and-a-half-hours. On Monday, Nov. 11, 2019, Mercury will make another transit, visible from the eastern U.S. and Canada, and all Central and South America. The rest of North America, Europe and Africa will catch part of the action. Asia and Australia will miss out. (NASA’s Goddard Space Flight Center/SDO/Genna Duberstein via AP)

Mercury putting on rare show Monday, parading across the sun

Unlike its 2016 transit, Mercury will score a near bull’s-eye this time,

Mercury is putting on a rare celestial show next week, parading across the sun in view of most of the world.

The solar system’s smallest, innermost planet will resemble a tiny black dot Monday as it passes directly between Earth and the sun. It begins at 7:35 a.m. EST.

The entire 5 1/2-hour event will be visible, weather permitting, in the eastern U.S. and Canada, and all Central and South America. The rest of North America, Europe and Africa will catch part of the action. Asia and Australia will miss out.

Unlike its 2016 transit, Mercury will score a near bull’s-eye this time, passing practically dead centre in front of our star.

Mercury’s next transit isn’t until 2032, and North America won’t get another viewing opportunity until 2049. Earthlings get treated to just 13 or 14 Mercury transits a century.

You’ll need proper eye protection for Monday’s spectacle: Telescopes or binoculars with solar filters are recommended. There’s no harm in pulling out the eclipse glasses from the total solar eclipse across the U.S. two years ago, but it would take “exceptional vision” to spot minuscule Mercury, said NASA solar astrophysicist Alex Young.

Mercury is 3,000 miles (4,800 kilometres) in diameter, compared with the sun’s 864,000 miles (1.4 million kilometres.)

During its 2012 transit of the sun, larger and closer Venus was barely detectable by Young with his solar-viewing glasses.

“That’s really close to the limit of what you can see,” he said earlier this week. “So Mercury’s going to probably be too small.”

Venus transits are much rarer. The next one isn’t until 2117.

Mercury will cut a diagonal path left to right across the sun on Monday, entering at bottom left (around the 8 hour mark on a clock) and exiting top right (around the 2 hour mark).

Although the trek will appear slow, Mercury will zoom across the sun at roughly 150,000 mph (241,000 kph).

NASA will broadcast the transit as seen from the orbiting Solar Dynamics Observatory, with only a brief lag. Scientists will use the transit to fine-tune telescopes, especially those in space that cannot be adjusted by hand, according to Young.

It’s this kind of transit that allows scientists to discover alien worlds. Periodic, fleeting dips of starlight indicate an orbiting planet.

“Transits are a visible demonstration of how the planets move around the sun, and everyone with access to the right equipment should take a look,” Mike Cruise, president of the Royal Astronomical Society, said in a statement from England.

Marcia Dunn, The Associated Press

Like us on Facebook and follow us on Twitter.

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

87-year-old Lacombe resident ‘Grandpa Bill’ goes viral on TikTok

Bill Clark’s video has had nearly 300,000 views on the platform

Town of Castor to open tenders to replace garbage truck

Council decided to purchase a used rear load garbage truck to replace the existing the one

Only 13 new COVID-19 cases confirmed by Alberta gov’t Saturday

There’s currently only two active cases in province’s central zone

Central Alberta naturalists fear pristine headwaters will be contaminated by coal mine

Chutes of the Ram constitute one of Earth’s ‘most beautiful’ spots

Every Albertan eligible for COVID-19 testing

22 new cases confirmed on Friday

QUIZ: Test your knowledge of the world of summer sports

In a typical year, there are plenty of summer sporting events and tournaments held across Canada

COVID-19 cancelled their wedding plans, so they married on a B.C. mountaintop

Ceremony was live streamed to friends and family around the world

International student worry about pandemic as decisions loom on travel to Canada

Zohra Shahbuddin is weighing whether to enrol this fall or put off coming to Canada until next year

How finding a ministerial home for CMHC caused ‘madness’ in November

The Canada Mortgage and Housing Corp. manages the national housing strategy

‘What do we do now?’ Labour dispute at Regina refinery nears 6 months

About 700 unionized workers were locked out by refinery owner, Federated Co-operatives Ltd., Dec. 5

Police need more than an unverified tip to avoid drug-case entrapment: top court

Police need more than an unverified tip to avoid drug-case entrapment: top court

N.S. police received warnings in 2011 about man who would become mass killer

N.S. police received warnings in 2011 about man who would become mass killer

Trudeau acknowledges ‘anti-black racism’ in U.S., with ‘work to do in Canada’

Trudeau acknowledges ‘anti-black racism’ in U.S., with ‘work to do in Canada’

Want a mask with your Big Mac? Alberta handing out masks at drive-thrus

Want a mask with your Big Mac? Alberta handing out masks at drive-thrus

Most Read