Science & Technology
‘Bizarre’ long-legged bird-like dinosaur has scientists enthralled
About 148 to 150 million years ago, a strange pheasant-sized and bird-like dinosaur with elongated legs and arms built much like wings inhabited southeastern China, with a puzzling anatomy suggesting it either was a fast runner or lived a lifestyle like a modern wading bird.
Scientists said on Wednesday they have unearthed in Fujian Province the fossil of a Jurassic Period dinosaur they named Fujianvenator prodigiosus – a creature that sheds light on a critical evolutionary stage in the origin of birds, Reuters reported.
The question of whether Fujianvenator, with its curious mixture of skeletal features, should be classified as a bird depends on how one defines a bird, according to study leader Min Wang, a paleontologist at the Institute of Vertebrate Paleontology and Paleoanthropology of the Chinese Academy of Sciences.
Asked for a word to describe Fujianvenator, Wang replied, “I would say ‘bizarre.’ Fujianvenator is far from similar to any modern birds.”
A remarkable event in dinosaur evolution came when small feathered two-legged dinosaurs from a lineage known as theropods gave rise to birds late in the Jurassic, with the oldest-known bird – Archaeopteryx – dating to roughly 150 million years ago in Germany.
Fujianvenator is a member of a grouping called avialans that includes all birds and their closest non-avian dinosaur relatives, Wang said. Despite their modest beginnings, birds survived the asteroid strike 66 million years ago that doomed their non-avian dinosaur comrades.
The Fujianvenator fossil, discovered last October, is fairly complete but lacks the animal’s skull and parts of its feet, making it hard to interpret its diet and lifestyle.
Fujianvenator’s lower leg bone – the tibia – was twice as long as its thigh bone – the femur. Such dimensions are unique among theropods, a group that includes all the meat-eating dinosaurs such as Tyrannosaurus and various others. It also had a long bony tail.
“The forelimb is generally built like a bird’s wing, but with three claws on the fingers, which are absent from modern birds. So you can call it wing. It cannot be determined whether it could fly or not. Based on the skeletal features, Fujianvenator probably is at least not good at flying,” Wang said.
“The fossil itself does not preserve feathers. However, its closest relatives and nearly all the known avialan theropods have feathers, and feathers are widely distributed among dinosaurs. Therefore, it would not be a surprise if Fujianvenator had feathers,” Wang added.
Based on the anatomy of its long legs, the researchers proposed two possible lifestyles – either fast running or wading in a swampy environment much like modern cranes or herons.
“I would put my money on runner,” Wang said.
Scientists are seeking a better understanding of the origin of birds as well as non-avian dinosaurs with bird-like traits.
“To me, Fujianvenator represents another interesting piece of evidence showing the wide distribution of various bird-like dinosaurs living nearly at the same time and sharing similar habitats with their bird descendants,” said paleontologist Zhonghe Zhou of the Institute of Vertebrate Paleontology and Paleoanthropology, a co-author of the study published in the journal Nature.
The earliest chapters in the history of birds remain murky due to the paucity of fossils. After Archaeopteryx – a crow-sized bird with teeth, a long bony tail and no beak whose fossils were first found in the 19th century – there is a canyon of about 20 million years before the next birds appear in the fossil record.
“One thing is for sure. There is still a big gap between the oldest known bird and the second-oldest known birds,” Zhou said.
Science & Technology
Total darkness, then sunset as full eclipse wows spectators in Spain
Millions of people gathered in Iceland and northern Spain to witness Western Europe’s first total solar eclipse in 27 years.
Spectators across Spain watched in wonder, some whipping off their protective glasses and rising to their feet in unison, as a rare total solar eclipse swept across the north of the country on Wednesday evening, plunging it into darkness.
Spain deployed a massive police contingent and set up special viewing spots across rural areas that offered the best views of the spectacle, Reuters reported.
Viewers in Buitrago de Lozoya, a rural district north of Madrid, clapped and cheered as the sky dimmed and Baily’s beads – bright points of sunlight that shine around the edge of the moon during a total eclipse – glistened on the horizon just after 8:30 p.m. (1830 GMT), lasting barely a minute.
“It’s impressive how the colours return little by little after totality – first the reds, then the blues – just like at dawn and sunset, totally deceiving your brain,” said economist Diego Fernandez, 32.
Rafael Jiménez, 50, a resident of Madrid, said the event felt like science fiction. “It was an absurd scene; we even got soaked when the garden sprinklers kicked in,” he said. “And then, just like that, we were watching the sunset again.”
Spain’s turn with the eclipse followed shortly after a less remarkable spectacle over much of overcast Iceland, although a break in the clouds in the far west of the Nordic country allowed holidaymakers and locals a glimpse of the celestial phenomenon. The eclipse was hidden behind clouds in central Reykjavik although the darkness of the totality was still evident.
“It was like a whole day just came at once and I felt goosebumps because it just made us think about … the shortness of life, how time can be different and it depends on your perspective,” lawyer Eduarda Ortiz, 33, told Reuters in the Icelandic capital.
Millions of people gathered in Iceland and northern Spain to witness Western Europe’s first total solar eclipse in 27 years.
Brian May, former guitarist for the rock band Queen, was among them. He travelled to an observatory in Spain’s Teruel province and chronicled the experience on his Instagram page.
“Here we go, the sun is disappearing. It’s amazing,” he said as the eclipse reached its climax and bystanders burst into cheers and applause after a countdown.
In Spain, authorities were expecting up to 6 million visitors in mostly rural areas under the eclipse’s path across the north of Spain and the Balearic Islands.
POLICE, PLANES AND HELICOPTERS ON STANDBY
The Iberian Peninsula last witnessed a total solar eclipse in 1912, but another is due on August 2, 2027, and an annular eclipse will follow in January 2028, completing the so-called “Iberian Eclipse Trio”.
The uncanny sensation when day briefly turns to twilight and some animals fall quiet, while the moon passes directly between Earth and the sun, has often been seen through history as an omen of cosmic struggle or a sign of divine power.
For Spain, the event has been a chance to showcase its less-travelled regions and draw tourists from its overcrowded beach resorts. Some seized the opportunity to get married, according to local press reports.
The eclipse took place in one of the country’s highest-risk periods for wildfires, with emergency crews fighting various fires on Wednesday, including a large one in the southern Andalucia region.
Authorities rolled out a large-scale police operation and public safety campaign to make sure the crowds did not set off wildfires.
A small fire erupted near an eclipse viewing point in the town of Peñíscola, in the Valencia region, local authorities said. The fire began in a vehicle and spread to 33 more before firefighters brought it under control, they said. Emergency crews, including aircraft, were dispatched to the area.
The authorities dispatched 25,000 police officers to guarantee security around the eclipse observation sites and deployed nearly 100 planes and helicopters.
As of late Wednesday, no wildfire incident tied to eclipse chasers was reported.
ECLIPSE FEVER IN THE LAND OF SAGAS
In Reykjavik, glasses that allow spectators to view the phenomenon without damaging their eyes have been sold out for days, as the country of roughly 400,000 people welcomed up to 80,000 visitors.
Totality reached Iceland’s westernmost coast at about 5:44 p.m. (1744 GMT), casting the far west of the island nation into total darkness for up to 2 minutes and 13 seconds.
The event has drawn both casual observers and “eclipse chasers”, enthusiasts who crisscross the globe to be in the path of totality whenever and wherever an eclipse occurs.
In Spain, 43-year old Gema, who did not give her last name, said as she left the Buitrago de Lozoya viewing point: “Everybody tells you about it, but it is more beautiful than you imagine.”
Science & Technology
Swirling, vortex-like patterns observed on the sun’s surface
The researchers said the observations may provide insight into underlying physical processes that impact the dynamics of the sun and other stars, including eruptions from the solar surface that can interfere with the operation of satellites, GPS navigation, power grids and global communications on Earth.
Astronomers have obtained the highest-resolution images to date of our sun’s visible surface, observing swirling, vortex-like patterns in superheated solar gases reminiscent of the shapes depicted in the nocturnal sky in Vincent van Gogh’s 1889 painting “The Starry Night.”
The researchers made the observations of a portion of the sun’s photosphere, a relatively thin layer — about 60 miles (100 km) in depth compared to the overall solar diameter of roughly 865,000 miles (1.4 million km) — using the U.S. National Science Foundation’s Hawaii-based Daniel K. Inouye Solar Telescope, Reuters reported.
The still images and time-lapse video reveal continuously growing whirls of hot plasma, gas heated to temperatures so high that subatomic particles called electrons break free from atoms and form a broth of charged particles. The observed whirls are large on a human scale but small on the scale of a stellar surface, with diameters ranging from about 12 miles (19 km) — the minimum scale detectable by the world’s most powerful solar telescope — up to roughly 100 miles (170 km).
The researchers said the observations may provide insight into underlying physical processes that impact the dynamics of the sun and other stars, including eruptions from the solar surface that can interfere with the operation of satellites, GPS navigation, power grids and global communications on Earth.
The curly, circular patterns do not represent random shapes, but rather are the first detection of a phenomenon called Kelvin-Helmholtz instability, or KHI, on the surface of a star. KHI, first described in the 19th century, refers to a dynamic process that happens when two parallel streams of fluids or gases interact while moving at different velocities.
“The interface can become unstable and develop wave-like vortices that grow in size until they break apart, not unlike waves out on a lake or out on the ocean in windy conditions,” said astronomer Friedrich Wöger, a senior scientist at the National Science Foundation’s National Solar Observatory in Colorado, the Inouye telescope’s instrument program scientist, and co-lead author of the study published on Wednesday in the journal Nature.
Swirling clouds caused by KHI are a well-known, albeit rare, meteorological occurrence on Earth, and also have been observed in the atmospheres of the giant gas planets Jupiter and Saturn, Wöger said.
“The difference from the waves and clouds we know here on Earth is that the two interacting fluids are hot plasma — about 6,000 degrees Kelvin and 10,000 degrees Fahrenheit (5,540 degrees Celsius) — moving within a magnetic field that helps create the conditions for the instability to develop,” Wöger said.
By twisting the solar magnetic field, KHI creates energy that can suddenly unleash an explosion.
‘A TRUE GAME-CHANGER’
Wöger called the discovery of solar KHI “a true game-changer,” saying it opens up a new framework for understanding how the sun energizes its atmosphere.
“The sun and sun-like stars are extremely dynamic systems, characterized by a whole spectrum of rapid, explosive events within their magnetic elements. How these explosions are triggered is one of the main frontiers in modern solar physics,” National Solar Observatory astronomer and study co-lead author David Kuridze said.
The KHI manifestation might help explain why the sun’s outer atmosphere becomes as hot as it does and why magnetic energy accumulates and moves around on the solar surface.
The constant twisting motions generated by KHI can gradually build the energy required to trigger coronal mass ejections and solar flares, Kuridze said. Coronal mass ejections are huge bubbles of gas threaded with magnetic field lines that are expelled from the sun’s surface. Solar flares are gigantic explosions on the sun that propel light, energy and high-speed particles into space.
Aside from the science, the researchers admired the beauty of the new close-up views of the sun.
“Maybe ‘magnificent’ comes closest to describing the aesthetics in the images for us,” Wöger said.
“Interestingly, artists have long captured this fluid dynamic intuition in their work. A famous example is Van Gogh’s ‘The Starry Night,’ where the sky’s vortex structures closely resemble turbulent KHI structures,” Kuridze said. “A similar parallel appears in Hokusai’s famous woodblock print, ‘The Great Wave off Kanagawa,’ where the curling crests of the wave echo the iconic shape of KHI billows. It shows how the fundamental geometry of nature deeply resonates with human art.”
Science & Technology
Afghanistan currently transits internet traffic to Central Asia, says MCIT
Afghanistan is currently serving as a transit route for internet traffic between South Asia and Central Asia, the Ministry of Communications and Information Technology (MCIT) said, highlighting the country’s growing role in regional digital connectivity.
The ministry said fiber-optic traffic from several South Asian countries is routed through Afghanistan to Central Asian nations via the country’s fiber-optic network.
According to the ministry, nearly $3 billion has been invested in Afghanistan’s fiber-optic and telecommunications sector so far, with expansion efforts continuing.
Officials said Afghanistan offers significant investment opportunities in telecommunications and fiber-optic infrastructure. They added that, alongside expanding domestic communications services, the ministry is working to enhance the country’s capacity to provide transit services for regional countries.
The ministry said Afghanistan is already facilitating the transit of internet traffic from parts of South Asia to Central Asia and stressed that the country’s strategic geographic location positions it as an important digital corridor between the two regions.
“We are currently transiting internet traffic through Afghanistan to South Asian and Central Asian countries,” said Enayatullah Alokozai, spokesperson for the Ministry of Communications and Information Technology. “Afghanistan is a suitable geographical corridor for data transmission.”
Economic analysts say Afghanistan has the potential to become a key hub for regional connectivity. They noted that, in addition to serving as a corridor for energy transmission from Central Asia, the country could also facilitate the large-scale transit of fiber-optic connectivity, internet traffic, and commercial goods.
Representatives of the private sector also said Afghanistan has strong potential to attract further investment in telecommunications and fiber-optic infrastructure. They noted that numerous domestic and international companies are active in the sector, creating direct employment opportunities for thousands of Afghans.
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