Solar eclipse to dim Africa, Asia today – experts call it the most dramatic Ring of Fire in years
Sky watchers along a narrow band from West Africa to the Arabian Peninsula, India and southern China will witness the most dramatic “ring of fire” solar eclipse to shadow the Earth in years on Sunday.
Annular eclipses occur when the Moon – passing between Earth and the Sun – is not quite close enough to our planet to completely obscure sunlight, leaving a thin ring of the solar disc visible.
They occur every year or two, and can only be seen from a narrow pathway across the planet. The full eclipse will be visible somewhere on Earth for just under four hours, and one of the last places to see a partially hidden Sun is Taiwan before its path heads out into the Pacific.
Remarkably, the eclipse on Sunday arrives on the northern hemisphere’s longest day of the year – the summer solstice – when Earth’s north pole is tilted most directly towards the Sun, news agency AFP has said.
The “ring of fire” will first be seen in north-eastern Republic of Congo at 5:56 am local time (04:56 GMT) just a few minutes after sunrise. This is the point of maximum duration, with the blackout lasting one minute and 22 seconds.
Arcing eastward across Asia and Africa, it will reach “maximum eclipse” – with a perfect solar halo around the Moon – over Uttarakhand, India near the Sino-Indian border at 12:10 pm local time (6:40 GMT).
More spectacular, but less long-lived: the exact alignment of the Earth, Moon and Sun will be visible for only 38 seconds.
“The annular eclipse is visible from about 2% of the Earth surface,” Florent Delefie, an astronomer at the Paris Observatory, told AFP news agency. “It’s a bit like switching from a 500-watt to a 30-watt light bulb,” he added. “
People hundreds of kilometres on either side of the centreline across 14 countries will also see light drain from the day, but not the “ring of fire”.
A solar eclipse always occurs about two weeks before or after a lunar eclipse, when the Moon moves into Earth’s shadow. Lunar eclipses are visible from about half of Earth’s surface.
There will be a second solar eclipse in 2020 on December 14 over South America. Because the Moon will be a bit closer to Earth, it will block the Sun’s light entirely. It will take less than 100 minutes for the path of this eclipse to move across the continent.
Even if the day has darkened, looking at a solar eclipse with the naked eye is dangerous. Sunglasses – which don’t filter out UV rays – do not offer any protection. The Sun is so bright that even when there’s only a tiny portion visible, it is still dangerous for the eyes.