'Blood moon' dazzles skygazers in century's longest eclipse

The longest "blood moon" eclipse this century dazzled skygazers across the globe Friday, coinciding with Mars' closest approach in 15 years in a thrilling celestial spectacle.

As Earth's constant companion slowly sailed across the skies, crowds gathered around the world to catch a glimpse of the rare phenomenon.

Beside Lake Magadi, 100 kilometres (60 miles) southwest of the Kenyan capital Nairobi, young members of the Maasai community watched the eclipse through a high-powered telescope provided by a local couple.

"Until today I thought Mars, Jupiter and the other planets were in the imagination of scientists," Purity Sailepo, 16, told AFP.

"But now I've seen it I can believe it and I want to be an astronomer to tell other people."

Unlike with a solar eclipse, viewers did not need protective eye gear to observe the rare display.

For about half the world, the moon was partly or fully in Earth's shadow from 1714 to 2328 GMT -- six hours and 14 minutes in all.

The period of complete eclipse -- known as "totality", when the moon appears darkest -- lasted from 1930 to 2113 GMT.

At the same time, Mars hovered near the moon in the night sky, easily visible to the naked eye.

Amateur astronomers in the southern hemisphere were best-placed to witness the rare sight, especially in southern Africa, Australia, and Madagascar, though it was also visible in Europe, South Asia and South America.

More than 2,000 people including many children armed with binoculars gathered in the Tunisian capital of Tunis.

"I hope this eclipse will bring us happiness and peace," said Karima, 46, without taking her eyes off the sky.

However, bad weather thwarted the cosmic display in several parts of the world.

Widespread monsoon rainstorms and thick clouds hid the moon across much of India and its neighbours, which should have had a prime view.

Similarly, eager observers who had assembled on cliffs and beaches in the English county of Dorset were left in the dark due to an overcast sky.

"It's disappointing," Tish Adams, 67, told AFP. "I took a few photos but there was nothing but a streak of pink in the sky."

Meanwhile frustrated crowds of would-be moon admirers gathered on a hill in cloudy north London consoled themselves by breaking into a rendition of Welsh singer Bonnie Tyler's 1983 hit "Total eclipse of the heart".

Those in Brazil's Rio de Janeiro had more luck, snapping the red moon in the clear night sky with their phones and cameras.

"I thought it was very pretty and I liked the planet Mars even more, which you could see right next to the moon," said Talita Oliveira, 34.

- Celestial bodies align -

Mars appeared unusually large and bright, a mere 57.7 million kilometres (35.9 million miles) from Earth on its elliptical orbit around the sun.

A total lunar eclipse happens when Earth takes position in a straight line between the moon and sun, blotting out the direct sunlight that normally makes our satellite glow whitish-yellow.

The moon travels to a similar position every month, but the tilt of its orbit means it normally passes above or below the Earth's shadow -- so most months we have a full moon without an eclipse.

When the three celestial bodies are perfectly lined up, however, the Earth's atmosphere scatters blue light from the sun while refracting or bending red light onto the moon, usually giving it a rosy blush.

This is what gives the phenomenon the name "blood moon", though Mark Bailey of the Armagh Observatory in Northern Ireland said the colour can vary greatly.

It depends partly on "how cloudy or transparent those parts of the Earth's atmosphere are which enable sunlight to reach the moon", he told AFP.

"During a very dark eclipse the moon may be almost invisible."

The long duration of this eclipse was partly because the moon made a near-central passage through Earth's umbra -- the darkest, most central part of the shadow.

"For those alive today, it's a unique event," said Sven Melchert, head of a local society of astronomy enthusiasts in Heppenheim, western Germany, cited by the DPA news agency.

- 'Eerie and beautiful' -

The moon was also at the farthest point on its orbit from Earth, making its movement across the sky slower from our perspective, thus spending longer in the dark.

NASA, meanwhile, called out social media hoaxers claiming that Mars would appear as big as the moon during the eclipse.

"If that were true, we'd be in big trouble given the gravitational pulls on Earth, Mars, and our moon!" the NASA website stated.

Mars instead appeared as a very bright star.

"In the middle of a lunar eclipse it can look as if a red planet has taken up residence near the Earth -- they are both eerie and beautiful," said Robert Massey of the Royal Astronomical Society in London.

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Red planet and 'blood moon' pair up to dazzle skygazers
Paris (AFP) July 27, 2018
The longest "blood moon" eclipse this century will coincide with Mars' closest approach in 15 years on Friday to offer skygazers a thrilling astronomical double bill. Viewers will need no protective eye gear to observe the spectacle - unlike when watching solar eclipse. "All you have to do is... go outside!" the Royal Astronomical Society in London advises. For about half the world, the moon will be partly or fully in Earth's shadow from 1714 to 2328 GMT - six hours and 14 minutes in all. ... read more