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How Dark It Will Get During The Total Solar Eclipse — And Why
Solar eclipse watchers were ecstatic as the clouds broke minutes before totality during the total ... [+] solar eclipse from the one of last vantage points where totality will be visible on August 21, 2017 in Isle of Palms, S.C.. It's been 99 years since a total solar eclipse crossed the country from the Pacific to the Atlantic. The total solar eclipse on June 8, 1918, crossed the States from Washington to Florida. (Photo by Pete Marovich/Getty Images)
Getty ImagesWill it get dark during the eclipse? That depends on where you are on Monday, April 8, when the moon blocks the sun, as seen across North America.
It will be a total solar eclipse only for those within the 115-mile-wide path of totality that runs across North America, including parts of 15 U.S. States. Inside the path, people will see a partial solar eclipse followed by a brief total solar eclipse, during which it will get dark. When the moon covers the last 0.1% of the sun, the light levels will drop by about 1,000 times. That's why being in the path is so, so important. Outside of the path of totality, a partial solar eclipse will be seen—and it won't get dark. Just a little dull.
How Quickly It Will Get Dark Within The Path Of Totality"When the moon covers 85% of the sun, it's still no darker than being in the shade on a sunny day and even at 95%, it's an overcast day-darkness," said Dr. Angela Speck, chair of the Physics and Astronomy department of the University of Texas at San Antonio, in a video. "In the last minute, the brightness fades from 100 to 1,000 times as you are plunged into darkness—it goes from a little darker than an overcast day all the way to a late twilight or full moon-dark in about one minute." Speck points out that even at 99.9% partial eclipse when just a 1,000th of the sun is showing, there is still at least 100 times more light coming from the sun than during totality.
How Profoundly Dark It Will Get Within The Path Of TotalityAnyone who witnessed the last total solar eclipse in the U.S. On August 21, 2017, will remember that it didn't get as dark as they perhaps expected. The sky became a beautiful but shallow twilight, but nothing more. "The sky will become dark as if it were dawn or dusk," according to NASA, but exactly how dark it will become is a product of three things:
The first one is key because the size of the moon's shadow on April 8, 2024, will be much larger than on August 21, 2017. In short, we're set for a dark eclipse … probably.
"It will be darker than it was in 2017," said Alan Dyer, an experienced eclipse photographer and author of the excellent ebook How to Photograph Solar Eclipses, in an interview. "But it varies depending on how close you are to the centerline—if you're out towards the edge of the path, then it will be brighter because you're closer to where the light is coming in."
Factor #1 — The Size Of The Moon's Shadow"If the moon is appreciably larger than the sun, then you get a larger shadow on Earth, and you're deeper into that shadow during totality," said "Mr. Eclipse" Fred Espenak, retired NASA astrophysicist and eclipse expert and author of Totality: The Great North American Eclipse of 2024, in an interview last year. The moon has an elliptical orbit of Earth, and on April 8, it will be almost 8,000 miles closer to Earth than it was during the 2017 eclipse. Therefore, the conical shadow that falls on Earth will have a larger diameter.
Factor #2 — Weather And Atmospheric ConditionsAnother important factor is the atmospheric conditions on the Earth. "If you've got a lot of scattered clouds and aerosol particles in the air, they will scatter light into the shadow, making for a brighter eclipse," said Espenak. "Whereas if you've got a very clear atmosphere without any clouds or particles in the atmosphere, then there's less scattering of the atmosphere, and it's much darker in the shadow."
Factor #3 — Where You StandIf you're standing in the path of totality, the moon's shadow will pass over you. Its shape, of course, is spherical or oval, depending on where you are. Either way, there will be a point when you're deepest into its shadow—and that's when it will be darkest at your location. This is mid-eclipse. "The darkness of totality changes—it's darker at mid-totality than it is at the beginning or end of totality," said Espenak. "At the beginning and the end of totality, you're right inside the edge of the shadow, and there's a lot of sunlight scattered in from the sides that light up the sky."
For the latest on the total solar eclipse, including travel and lodging options, check my main feed for new articles each day.
Wishing you clear skies and wide eyes.
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More Than A Game: Go Beyond The Boundary At Adelaide Oval
The RoofClimb during an AFL match at Adelaide Oval. Picture: Adelaide OvalRORY Sloane and Tom Jonas don't see eye to eye as on-field rivals at Adelaide Oval, but the pair agree there's a great experience to be had metres above the hallowed turf.
The Adelaide Oval RoofClimb offers a unique perspective of the picturesque stadium from high atop its towering grandstands.
"I've always looked up at everybody looking down on us training or playing … to get that perspective of the ground is pretty cool," Sloane said.
"I would love to have a look during a game … it's a pretty crazy birds-eye view from up there.
"It was a very cool experience – especially when you play on that oval."
The Port Adelaide skipper was blown away by the panoramic views the RoofClimb experience offers.
GATHER ROUND All you need to know for the Festival of Footy
"Adelaide Oval is as good a place to watch sport as you'll find in Australia," Jonas said.
"Whether it's a Test match or a twilight footy game with the sun setting, to be up on the roof looking down at the ground, off to the beaches in the west and the hills to the east … it doesn't get much better than that."
The RoofClimb is one of several experiences Adelaide Oval offers for fans during Gather Round, with stadium tours also a popular option for those wanting to learn more about the storied history of the venue.
The RoofClimb at Adelaide Oval. Picture: Adelaide Oval"Adelaide Oval so perfectly blends the old with the new," Adelaide Oval Ambassador Terry Connolly told AFL.Com.Au.
"It's known for its centuries of rich cricketing history, and I have a lot of great stories to tell about the colourful cricketing legends who have had their feats recorded here on the heritage-listed scoreboard.
"What people might not consider is Adelaide Oval's proud history and association with football – the original SAFL is the nation's oldest football league, started right here in 1877.
FROM SHEEP TO SHERRINS The Adelaide Hills are alive with AFL
"So, for footy fans, there's plenty to uncover and experience on our stadium tours.
"There's something really special about experiencing Adelaide Oval when it's empty and exploring hidden areas behind the scenes.
"My favourite moment is bringing guests up the players' race and onto the turf for the first time.
"It's just magic."
Experience Adelaide Oval during Gather RoundTake in Adelaide Oval from a new perspective on a RoofClimb
Extra climbs have just been released for Gather Round games, with a limited number of spots filling fast.
Fans can also do a climb outside of game times – Adelaide Oval is often at its most beautiful when it's completely empty and peaceful.
Bookings here
The RoofClimb at sunset at Adelaide Oval. Picture: Adelaide OvalDiscover the secrets of Adelaide Oval with a Gather Round Stadium Tour
Access areas normally restricted to players and club staff, including change rooms, enter the playing arena from the players' race, and explore inside the historic scoreboard.
Run twice a day by extremely knowledgeable Adelaide Oval Ambassadors who have plenty of stories to tell.
Times & pricing here
Inside the famous scoreboard on a tour of Adelaide Oval. Picture: Adelaide OvalStay at the stadium with a night at Oval Hotel
Australia's first stadium hotel is at Adelaide Oval, built to seamlessly integrate with the eastern side of the stadium.
Each room at the boutique hotel looks out to the park lands surrounding the Oval, and features stylish design, modern technology and luxurious extras.
Limited rooms are available during Gather Round.
Bookings here
The Oval Hotel. Picture: Adelaide OvalEnjoy breakfast with a view at Bespoke Wine Bar & Kitchen
Access to the Oval Hotel's two restaurants are limited to MTX Club members while the game is on due to their unsurpassed views of the field, but they are open to the public at all other times.
Why not take advantage of the view and book a gourmet breakfast overlooking the hallowed turf?
Bookings here
Bespoke Wine Bar and Kitchen. Picture: Adelaide OvalWatch the sun set over the Oval at Malt Shovel Taphouse
Located on the banks of the River Torrens, near the southern end of the Riverbank Footbridge, the Taphouse offers pub-style fare, a huge range of craft beers, local wines, live music and more.
There's no better place to watch fans walk over the footbridge to the game, or take in Adelaide's famed sunsets.
More info here
The Malt Shovel Taphouse on the banks of the River Torrens. Picture: Adelaide Oval If you can't attend Gather Round anymore, can you return your ticket?If your circumstances have changed, and you can't get to Gather Round, you can return your ticket via the Ticketek App so other footy fans and members can attend the game. If you purchased a ticket, you'll get a refund. More details here
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