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Thursday, 10 May 2018

TOP 10 SCIENTIFIC WONDERS TO SEE BEFORE YOU DIE



1)EXPLORE CRYSTAL CAVES INSIDE A GLACIER


Drive along Iceland’s iconic Ring Road and you’ll pass many enormous glaciers. Inside some of them are glorious ice caves with translucent walls that produce weird light in hundreds of shades of blue. It’s a photographer’s dream. “Most of them [the caves] are formed by water running either through tunnels in the ice, or on the ground underneath the glacier,” says landscape photographer Iurie Belegurschi at Iceland Photo Tours, who takes groups into the ice caves within the vast Vatnajökull glacier in southeastern Iceland. Although there are many ice caves in Iceland, Vatnajökull’s are the most accessible. Safety is still important, though. “It’s safe to visit ice caves from November to March when it’s coldest outside and they’re stable,” says Belegurschi. “But always get a professional, local ice cave guide, who will provide you with all the safety gear and know exactly which caves are safe to enter.”

WHERE TO GO: Southeastern Iceland

WHEN TO GO: November-March


2)WITNESS A DESERT SUPERBLOOM


Occasionally, the normally arid Mojave Desert, Sonoran Desert, and Chihuahuan Desert will burst into a carpet of yellow, purple, and pink flowers. This is a superbloom, and it happens if there’s significant rainfall between September and January. “Each big bloom is different – it all depends on how much rain falls, and where,” says Ed Madej, a retired geographer, botanist and volunteer researcher at Death Valley National Park. “There’s one substantial wildflower bloom every 5.3 years on average, and a superbloom on average once every 11.2 years.”

WHERE TO GO: Death Valley National Park, California, the USA

WHEN TO GO: February-March

3)WATCH ROCKETS LAUNCHING


“Every launch is very impressive and exciting because you don’t know what will happen until the last moment,” says Dr Ken Kremer, a science journalist and veteran of over 80 rocket launches. “You hear the fire and fury for several minutes – seeing a launch in person is a billion times better than watching on TV.” You could do worse than visiting NASA’s Kennedy Space Center in Florida, or Wallops Flight Facility in Virginia. The current hot ticket, though, is going to watch a SpaceX reusable rocket launch, then land back at Cape Canaveral.

WHERE TO GO: Wallops Flight Facility, Virginia or Kennedy Space Center, Florida

 BEST TIME TO GO: Check www.kennedyspacecenter.com or www.nasa.gov


4)BEHOLD A NEVERENDING LIGHTNING STORM


Think lightning never strikes twice? The odds are more generous over the mouth of the Catatumbo River at Lake Maracaibo, Venezuela, which hosts lightning storms for up to 297 nights a year, thanks to some freakish topographical conditions. Lake Maracaibo is a huge body of water surrounded by warm swamps, and encircled by the Andes. The intense solar radiation heats up the water, slowly saturating the atmosphere with water vapour. When cold winds push down from the Andes, they force this warm, moist air upwards, creating the perfect conditions for the development of dense, lightning-bearing cumulonimbus clouds. “Watching the Catatumbo lightning is an experience you will get nowhere else,” says Jonas Piontek, a German photographer who has travelled to Lake Maracaibo twice to capture the storms. “You are basically isolated from everyone: no network, no internet, no real civilisation around for a radius of at least 50km. It’s just you and nature, and one of the best shows on Earth.”

WHERE TO GO: Catatumbo Camp, Venezuela (www. catatumbotour.com)

 WHEN TO GO: October-November

5)PEER INTO HELL


As attractions go, the Darvaza Gas Crater in Turkmenistan’s Karakum Desert is as strange as it is scorching. Back in 1971, Soviet geologists were searching the area for oil fields. Unbeknown to them, they had started their exploratory drilling on top of a cavern filled with natural gas. The ground collapsed, swallowing their equipment and opening up a huge crater. Fearing that toxic gases could harm local people, it was set on fire. This is called ‘flaring’, and is a familiar way of dealing with such a problem. But it backfired at Darvaza. Instead of burning for the expected two weeks, it’s been blazing non-stop ever since it was ignited.At around 60 x 20m, the largest crater is now a tourist attraction, which is referred to as the ‘Gates to Hell’. It’s best visited from Ashgabat, the country’s capital, about 250km south.Take an organised tour, specifically one that visits the crater at night when it’s at its most spectacular.

WHERE TO GO: Karakum Desert, Turkmenistan

WHEN TO GO: Anytime


6)GAZE AT LIQUID FIRE


“So you’re walking through a valley and all of a sudden a waterfall catches on fire,” says photographer Dave Gordon. He is speaking about a phenomenon that takes place in Yosemite Valley’s Horsetail Falls during late February, when light from the setting Sun causes the flowing water to glow yellow, orange and red, mimicking fire. “It occurs once a year, for a few days in a row, each lasting mere minutes,” says Gordon. “So in total your chance of seeing a Yosemite waterfall turn into what looks like lava, or flowing fire, is about 60 minutes per year.” The spectacle relies on many things; the angle of the Sun as it sets, recent rainfall levels that feed the waterfall, and a clear sky. “There is something spiritual in being able to visually witness the astrophysics of our Solar System play out,” says Gordon. “How many points in time had to line up perfectly to make this exact moment happen? It’s nature at its absolute best.” Yosemite National Park also happens to be one of the most photogenic locations on the planet, making the Horsetail Falls phenomenon a favourite with photographers, so expect a stake-out if conditions are right.

WHERE TO GO: Yosemite National Park, California, the USA

WHEN TO GO: Late February

7)SEE COLOURFUL LIGHTS IN THE NIGHT SKY


The Northern Lights are more familiar, but the Southern Lights are well worth a visit too. “Dunedin in New Zealand is probably the easiest place to go if you want to see the Southern Lights, but it’s only got about as much chance as northern Scotland or England,” says Dr Melanie Windridge, author of Aurora: In Search Of The Northern Lights. Other good locations include Ushuaia, South Georgia Island, the Falkland Islands and Antarctica. “The trouble with the Southern Lights is that they happen mainly over the ocean or in Antarctica,” says Windridge. Auroras occur when charged particles emanating from the Sun strike atoms in Earth’s atmosphere, causing the electrons of the atoms to move to a higher-energy state. “When they hit oxygen they emit green, and also red higher up, while nitrogen emits blue and purple colours,” says Windridge.

WHERE TO GO: Dunedin, New Zealand

 WHEN TO GO: March-September

8)OBSERVE HUNDREDS OF SHOOTING STARS


When comets tumble through the Solar System, they leave dust and rock in their wake. As Earth orbits the Sun, its path takes it through this debris. These chunks of space rock burn up as they pass into Earth’s atmosphere, causing a mesmerising light show. Although you can see a shooting star on any given night, there are a number of predictable meteor showers throughout the year. In December, stargazers watching the Geminids meteor shower can enjoy more than 100 shooting stars an hour. Meanwhile, May’s Eta Aquariids and October’s Orionids are worth a look – both are leftovers of the last visit of Halley’s Comet in 1986. However, the top choice is August’s Perseids, whose meteors often leave mesmerising trails in the sky. They’re the leftovers of Comet Swift-Tuttle’s passage through the Solar System in 1992. “Your best chance to see shooting stars is after midnight because then you are on the nightside of Earth as it hits the meteors head-on,” says John Barentine, programme manager at the International Dark-Sky Association in Phoenix, Arizona, the USA.

WHERE TO GO: Dark Sky Parks (www,darksky.org)

 WHEN TO GO: August or December

 9)WATCH A TOTAL SOLAR ECLIPSE


Don’t worry if you couldn’t make it out to the USA, this summer to witness the solar eclipse – they happen somewhere on Earth every 18 months. The spectacle is brief, but dramatic. “The sky suddenly darkens, and, if you’re watching with eclipse glasses, you will see the crescent of the Sun rapidly shrink and break up into a series of beads,” says eclipse cartographer Michael Zeiler. “Then you see a beautiful diamond ring around the Moon.” Moments later, the Sun’s corona – its super-heated outer atmosphere – appears as an ice-white halo. To catch the next one, head out to Chile or Argentina for July 2, 2019.

WHERE TO GO: Chile or Argentina

WHEN TO GO: July 2 2019


10)CHASE STORMS IN TORNADO ALLEY



“I’ve been a storm chaser and spotter since I was little,” says Nicholas Langley from the group Tornado Alley Chasers and Spotters. “I would sit outside my house in Tennessee watching storms roll in. It fascinates me how clouds can form out of thin air, then explode into monster supercells.”
A tornado is caused by updraughts and downdraughts of unstable air during a thunderstorm, when a wind shear tilts to form an upright vortex. However, storm chasing comes with huge risks, particularly traffic accidents. “You get tunnel vision out there and you don’t see the surrounding area – you just see the tornado,” he says. Tornado Alley is generally regarded to include the US states of Texas, Oklahoma, Kansas and Nebraska. Tornadoes are typically active in those states between March and late May. Other areas of the world where violent tornadoes are frequent include an area of the Pampas lowlands in Argentina, Paraguay and southern Brazil, and coastal Bangladesh on the Bay of Bengal.

WHERE TO GO: Texas, Oklahoma, Kansas or Nebraska, the USA

 BEST TIME TO GO: March-May


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