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2024 Total Solar Eclipse: Broader Path, Longer Totality, and Increased Solar Activity

February 2, 2024
in Science
2024 Total Solar Eclipse: Broader Path, Longer Totality, and Increased Solar Activity
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Total Solar Eclipse 2017 Madras, Oregon

The total solar eclipse on August 21, 2017, was photographed from Madras, Oregon. The black circle in the middle is the Moon. Surrounding it are white streams of light belonging to the Sun’s outer atmosphere, called the corona. Credit: NASA/Aubrey Gemignani

Anticipation builds for the April 8 total solar eclipse, promising a broader path, longer totality, and increased solar activity, alongside expanded scientific research efforts.

On April 8, the Moon’s shadow will sweep across the United States, as millions will view a total solar eclipse. For many, preparing for this event brings memories of the magnificent total solar eclipse on August 21, 2017.

In 2017, an estimated 215 million U.S. adults (88% of U.S. adults) viewed the solar eclipse, either directly or electronically. They experienced the Moon pass in front of the Sun, blocking part or all of our closest star’s bright face. The eclipse in 2024 could be even more exciting due to differences in the path, timing, and scientific research.

2017 2024 Total Solar Eclipse Paths United States

This map shows the path of the 2017 total solar eclipse, crossing from Oregon to South Carolina, and the 2024 total solar eclipse, crossing from Mexico into Texas, up to Maine, and exiting over Canada. Credit: Ernest Wright/NASA’s Scientific Visualization Studio

Wider, More Populated Path

The path of totality – where viewers can see the Moon totally block the Sun, revealing the star’s outer atmosphere, called the corona – is much wider during the upcoming total solar eclipse than it was during the eclipse in 2017. As the Moon orbits Earth, its distance from our planet varies. During the 2017 total solar eclipse, the Moon was a little bit farther away from Earth than it will be during upcoming total solar eclipse, causing the path of that eclipse to be a little skinnier. In 2017, the path ranged from about 62 to 71 miles wide. During the April eclipse, the path over North America will range between 108 and 122 miles wide – meaning at any given moment, this eclipse covers more ground. 

The 2024 eclipse path will also pass over more cities and densely populated areas than the 2017 path did. This will make it easier for more people to see totality. An estimated 31.6 million people live in the path of totality this year, compared to 12 million in 2017. An additional 150 million people live within 200 miles of the path of totality.

You don’t need to live within the path of totality to see the eclipse – in April, 99% of people who reside in the United States will be able to see the partial or total eclipse from where they live. Every contiguous U.S. state, plus parts of Alaska and Hawaii, will experience at least a partial solar eclipse.

2024 Total Solar Eclipse Path United States

This map illustrates the paths of the Moon’s shadow across the U.S. during the 2024 total solar eclipse. On April 8, 2024, a total solar eclipse will cross North and Central America creating a path of totality. During a total solar eclipse, the Moon completely blocks the Sun while it passes between the Sun and Earth. The sky will darken as if it were dawn or dusk and those standing in the path of totality may see the Sun’s outer atmosphere (the corona) if weather permits. Credit: NASA/Scientific Visualization Studio/Michala Garrison; Eclipse Calculations By Ernie Wright, NASA Goddard Space Flight Center

Longer Time in Totality

In April, totality will last longer than it did in 2017. Seven years ago, the longest period of totality was experienced near Carbondale, Illinois, at 2 minutes, 42 seconds. 

For the upcoming eclipse, totality will last up to 4 minutes, 28 seconds, in an area about 25 minutes northwest of Torreón, Mexico. As the eclipse enters Texas, totality will last about 4 minutes, 26 seconds at the center of the eclipse’s path. Durations longer than 4 minutes stretch as far north as Economy, Indiana. Even as the eclipse exits the U.S. and enters Canada, the eclipse will last up to 3 minutes, 21 seconds. 

SOHO CME March 2023

NASA/ESA’s Solar and Heliospheric Observatory (SOHO) captured this video of a coronal mass ejection on March 13, 2023. Credit: NASA/ESA/SOHO

During any total solar eclipse, totality lasts the longest near the center of the path, widthwise, and decreases toward the edge. But those seeking totality shouldn’t worry that they need to be exactly at the center. The time in totality falls off pretty slowly until you get close to the edge.

Heightened Solar Activity

Every 11 years or so, the Sun’s magnetic field flips, causing a cycle of increasing and then decreasing solar activity. During solar minimum, there are fewer giant eruptions from the Sun, such as solar flares and coronal mass ejections. But during solar maximum, the Sun becomes more active.

Solar Eclipse Prominences

A solar eclipse. Credit: NASA/Aubrey Gemignani

In 2017, the Sun was nearing solar minimum. Viewers of the total eclipse could see the breathtaking corona – but since the Sun was quiet, streamers flowing into the solar atmosphere were restricted to just the equatorial regions of the star. The Sun is more magnetically symmetrical during solar minimum, causing this simpler appearance. During the 2024 eclipse, the Sun will be in or near solar maximum, when the magnetic field is more like a tangled hairball. Streamers will likely be visible throughout the corona. In addition to that, viewers will have a better chance to see prominences – which appear as bright, pink curls or loops coming off the Sun.

With lucky timing, there could even be a chance to see a coronal mass ejection – a large eruption of solar material – during the eclipse.

Third Rocket Launched Annular Solar Eclipse 2023

The third rocket launched on October 14, 2023, during the annular solar eclipse leaves the launch pad. Credit: WSMR Army Photo

Expanded Scientific Research

During the total eclipse in 2024, NASA is funding several research initiatives that build on research done during the 2017 eclipse. The projects, which are led by researchers at different academic institutions, will study the Sun and its influence on Earth with a variety of instruments, including cameras aboard high-altitude research planes, ham radios, and more. In addition to those projects, instruments that were launched during the 2023 annular solar eclipse on three sounding rockets will again be launched during the upcoming total solar eclipse.

Two spacecraft designed to study the Sun’s corona – NASA’s Parker Solar Probe and ESA (European Space Agency) and NASA’s Solar Orbiter – have also launched since the 2017 solar eclipse. These missions will provide insights from the corona itself, while viewers on Earth see it with their own eyes, providing an exciting opportunity to combine and compare viewpoints.

To learn more about the 2024 total solar eclipse and how you can safely watch it, visit NASA’s eclipse website.

Special thanks to Michael Zeiler for his calculations on the populations in the eclipse path.

The 2017 total solar eclipse viewing analysis was conducted by Professor Jon D. Miller of the University of Michigan. This study was supported by a collaborative agreement between the University of Michigan and the National Aeronautics and Space Administration (award NNX16AC66A).

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : SciTechDaily – https://scitechdaily.com/2024-total-solar-eclipse-broader-path-longer-totality-and-increased-solar-activity/

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