Science isn't always cerebral, oftentimes revealing its intricacies with a striking image. And 2020 revealed some science gems that were both stunning and awe-inspiring. From “naked” sharks to secret galaxy mergers to disco tardigrades and more, a trove of incredible science photos came to light this crazy year.
The Underwater Photographer of the Year contest celebrates stunning photos captured in oceans, lakes and rivers around the world, and this year's entries were no exception. The competition's top prize went to French photographer Greg Lecoeur; he dove deep in waters near Antarctica to find a group of crabeater seals cavorting in a blue-tinged, otherworldly scene under an iceberg.
Inside the ‘Pillars of Creation'
The “Pillars of Creation” are a vast region of star-forming material located in the Eagle Nebula, about 6,000 light-years from Earth. These tendrils of gas and dust, made colorful by the radiation of bright young stars smoldering within, became a Milky Way landmark thanks to an iconic visible-light image taken by the Hubble Space Telescope in 1995. This year, NASA scientists shared a new view of the pillars, focusing instead on the infrared radiation normally invisible to human eyes. In the new infrared image (also taken by Hubble), the colorful pillars fade to ghosts of their former selves, revealing a kaleidoscope of newborn stars within the dust.
The disco tardigrade
In a contest celebrating microscopy — images of organisms that are too small to see with the naked eye — one of the top prizes went to a colorful photo showing the inner organs of a tardigrade, illuminated with fluorescent dyes. Because tardigrades are mostly colorless, photographer Ainara Pintur, a doctoral candidate in biomedicine at the Basque Center for Biophysics in Spain, used stains to highlight tiny structures making up the microorganism's digestive system, “including the mouthparts and stomach filled with food,” she said.
Storytime for otters
A family of orangutans and a romp of river otters are the furriest of friends, according to zookeepers in Belgium who purposefully arranged for the primates' and mustelids' habitats to intersect. Photos of these curious bedfellows went viral after Pairi Daiza, a privately owned zoo and botanical garden located in Belgium's province of Hainaut, recently posted them on Facebook.
Welcome to ‘Silkhenge'
Remarkable, high-resolution new video has revealed a wild sight: a silk structure in the Amazon that resembles a monumental henge, though teensy, and hence its nickname “Silkhenge.” Rather than human hands, spiders — whose identity has yet to be uncovered — crafted these web towers. New video captured in Peru shows tiny spiderlings breaking out of the structures; that suggests they serve as protective “fences” around spider egg sacs.
Gorgeous displays of lightning lit up Taal volcano in the Philippines, as it shot ash and lava sky-high. Here, a column of ash surrounds the crater of Taal on Jan. 12, with lightning in the background, as seen from Tagaytay city. Scientists are still trying to nail down the exact causes of volcanic lightning, but they have some ideas. One is that static electricity, created as a result of particles rubbing together within dense ash clouds near the ground, produce the electric flashes.
In January, the world's largest telescope took the highest-resolution picture ever of our home star, and it looks just like caramel corn. The incredibly detailed image revealed details about the sun's roiling magnetic field that previously only showed up as tiny specks. This gorgeous image of the sun was captured with the Daniel K. Inouye Solar Telescope (DKIST), perched high on the Haleakala mountain on the Hawaiian island of Maui.
The spiky splendor of frog skulls
While most frogs have smooth, rounded skulls, a number of species have skulls that are pointy, spiky, extra-wide or shovel-shaped, and scientists recently captured amazing images that showcase this diversity. This year, researchers discovered that some of these unusual skull features appeared multiple times in different frog lineages, separated by millions of years of evolution.
The other side of Doomsday
A torpedo-like robot named Icefin ventured to Antarctica's most dangerous glacier, and it found something extremely troubling. The Thwaites glacier, nicknamed the Doomsday glacier because it is melting so fast, is bathing its underbelly in a sea of surprisingly warm water. The water at the sea's boundary is more than 3.6 degrees Fahrenheit (2 degrees Celsius) warmer than freezing, according to news reports. That's even worse than climate scientists expected. Thwaites glacier not only accounts for a huge amount of sea-level rise, but its floating ice sheets also keep the rest of the glacier from flowing into the sea.
Two mice dance the tango after a romantic night out in London … is what we wish this photo was about. Actually, this incredible action shot taken by U.K.-based photographer Sam Rowley shows two of the London Underground's 500,000 resident mice fighting over a scrap of food on a subway platform. In February, the photo won the people's choice award for the London Natural History Museum's Wildlife Photographer of the Year competition.
Cannibal jelly buffet
Warty comb jellies (Mnemiopsis leidyi) are an invasive ctenophore — a jellyfish relative — native to the eastern Atlantic Ocean and first introduced to the Baltic Sea in the 1980s. In a May 2020 study, researchers learned that the prolific blobs are able to survive through extensive low-food periods by cannibalizing their own larvae. Not only did the study authors witness the jellies devouring their own young in a laboratory experiment (adults ate their babies after fewer than 36 hours without other prey), but the researchers also took this incredible photo of a wild warty comb jelly floating through the Baltic with two larvae in its gut.
Fly sex in amber
About 41 million years ago, two long-legged flies had just begun an amorous tryst when they were caught fast in sticky sap, which eventually hardened around their joined bodies to form an amber tomb. The last moments of these mating flies, now locked in amber, offer a fascinating window into life in the Eocene epoch (around 55 million to 34 million years ago). This remarkable “frozen behavior” is one of many amber specimens that scientists recently discovered this year in Australia.
Snot bombs away
Scientists finally discovered the source of mysterious “stinging water” that zaps the skin of people swimming in tropical lagoons around the world: A mix of jellyfish mucus and venom-filled “bombs.” The upside-down jellyfish (Cassiopea xamachana) rests top-down on the ocean floor and secretes viscous mucus into the water above. When researchers examined the snot under the microscope, they saw tiny spheres spinning around in the fluid. Stinging cells coat the spheres and deposit venom on creatures that run into them.
The first sight of COVID
It's a sadly familiar sight now: One of the first-ever images of SARS-CoV-2, the coronavirus that has sickened more than 77 million people and killed over 1.7 million in an outbreak that began in Wuhan, China. Researchers at the National Institute of Allergy and Infectious Diseases' Rocky Mountain Laboratories (RML) imaged samples of the virus and cells taken from a U.S. patient infected with COVID-19, the disease caused by SARS-CoV-2.
The animal that doesn't breathe
The microscopic parasite H. salminicola looks like a bunch of blue sperm with alien-like eyes. It's actually something even more bizarre: the first known animal on Earth that does not breathe oxygen. The bacteria lurks inside fish and worms and is known for infecting salmon with the white-pocked ailment called “tapioca disease.” Scientists looked at the peculiar parasite's genome for the first time this year, and they discovered it had lost all its genes related to respiration.
Bursts in the ice
A longstanding mystery has plagued physicists for two decades: Why do tiny, ghostly subatomic particles known as neutrinos have mass? The reigning physics model can't explain it, but the answer could be found beneath the Antarctic ice. While ordinary, low-energy neutrinos zing through the planet all the time without banging into anything, high-energy neutrinos might bang into a detector buried in the coldest continent's ice, known appropriately as IceCube. As they ping the detector, they would leave a telltale signal known as a “Zee burst,” according to researchers. This illustration shows what IceCube would look like without all the ice.
Dancing with the star
Einstein's theory of general relativity was proven right (again!) this year, thanks to the wobbly dance of a high-speed star swirling around the monster black hole at the center of our galaxy. After watching the star — named S2 — orbit the galactic center for 27 years, researchers concluded that the star does not have a fixed elliptical orbit as predicted by Isaac Newton's theory of gravity, but rather “dances” around the black hole in a pattern that resembles a rosette drawn using a spirograph. (Einstein predicted this pattern more than 100 years ago.)
Lizard lays #1 number two
A greasy, sandy diet left a northern curly-tailed lizard with a belly distended by a heavy ball of unpassable poop. The mass was so large that it made up nearly 80% of the animal's body weight — a record-breaking body-to-poop ratio, according to a Florida biologist. (Sadly, the lizard had to be euthanized with the poo ball still blocking its stomach.)
Houses along the shore of Lake Erie resembled ice sculptures last winter, after powerful wind gusts doused the homes with chilly lake water and freezing temperatures froze the moisture into an icy covering. Following 48 hours of strong winds and frigid chill, several feet of ice accumulated on the exteriors of three houses at Hoover Beach in Hamburg, New York. The ice was so thick that the houses were dark inside, one resident complained.
Rangeomorphs are thought to be some of the earliest non-microscopic animals on Earth, spreading prolifically during the end of the Ediacaran period (roughly 635 million to 541 million years ago) despite having no noticeable mouths, guts, reproductive organs or means of moving around. How did they thrive so long? Apparently, they had a “social network” of string-like filaments connecting them, a new study of hundreds of Canadian rangeomorph fossils found. Those filaments stretched anywhere from a few inches to several feet long, and could have helped rangeomorphs exchange nutrients or even clone themselves through asexual reproduction.
A ‘cosmic reef' blooms in space
Young stars blaze to life in a nearby galaxy, repainting their cosmic neighborhood with fiery blooms of gas and radiation. This Hubble Space Telescope image — taken in honor of the telescope's 30th anniversary in space — captures just another day in the life of two young nebulas (one red, one blue) in the Large Magellanic Cloud, a satellite galaxy of the Milky Way located about 163,000 light-years away. The star at the center of the blue nebula in the bottom left corner of the image is about 200,000 times brighter than our sun, NASA scientists said. Radiation from those stars causes the surrounding gas to glow in stunning colors.
The world's oldest roaches
It's rarely a treat to discover a cockroach at work, let alone two, but archaeologists were stoked this year to find a pair of cockroaches trapped in amber, apparently dating to the days when Tyrannosaurus rex walked the Earth. The roaches are 99 million years old, the authors of a new study wrote, making them about 30 million years older than the next-oldest cockroaches in the fossil record.
The ‘all terminator' moon
Shadows creep down the banks of every crater on the near-side of the moon, highlighting the pockmarked face of Earth's gravitationally-bound buddy with a clarity never before seen. According to photographer Andrew McCarthy, who posted the stunning image to his Instagram in April, this lunar view is actually “impossible.”
“This moon might look a little funny to you, and that's because it is an impossible scene,” McCarthy wrote on Instagram. “From two weeks of images of the waxing moon, I took the section of the picture that has the most contrast … aligned and blended them to show the rich texture across the entire surface.”
Garden of the deep
The South Australian coast is surrounded by a labyrinth of underwater canyons, many of them still unexplored. This year, a team of researchers (and their underwater robot companion) completed a survey of three such canyons, uncovering a hidden world of both thriving coral gardens and ash-white coral graveyards. Studying the living and dead coral populations could reveal how the area has reacted to climate change over time, and how other underwater ecosystems could react as the oceans continue to warm.
The princess' bones
Experts recently confirmed that human remains found behind a church wall in Folkestone in the United Kingdom belong to one of England's earliest saints. Her name was Eanswythe; she was the granddaughter of Ethelbert, the first Christian King of Kent, and she died around the middle of the seventh century, when she was in her late teens or early 20s. The bones were likely hidden away centuries later to prevent them from being destroyed during the Protestant Reformation, and they were discovered when workmen broke through one of the church's walls in 1885.
The slightly-less-great red spot
Jupiter's Great Red Spot — the angry storm swirling around our solar system's largest planet — is shrinking. Just a few centuries ago, the famous storm was about three times wider than Earth — but now, its swirl of winds is comparable in diameter to our home planet, leading to some speculation that the Great Red Spot may be dying. However, research this year indicated that the vortex that powers the cyclone is still going strong.
Your oldest ancestor
Scientists in Australia discovered fossil evidence of what may be the oldest shared ancestor of all living animals. The creature in question is a worm-like organism that burrowed beneath the sea in search of nutrients some 555 million years ago, during the Ediacaran period (571 million to 539 million years ago). The primeval creepy-crawler, which was about the size and shape of a grain of rice, may not look much like you or me, but it is the oldest known example of a bilaterian — an animal with two symmetrical sides, a distinct front and back end and a continuous digestive system connecting them.
Sphinx at sunset
The Sphinx and the sun had a “distinctive astronomical” moment together during the spring equinox on March 19, when the sun set on the shoulder of the half-man, half-lion statue. The Sphinx's unique position indicates that the ancient Egyptians put it there purposefully, the Egypt Ministry of Antiquities said, in order to take advantage of the special light conditions of the twice-annual equinox.
The shipwrecked Stickleback
Explorers found the wreck of a lost United States Navy submarine that sank more than 60 years ago in deep water near the Hawaiian island of Oahu. USS Stickleback, a Balao-class submarine with the hull number SS-415, sank on May 28, 1958, after an accidental collision with another U.S. Navy ship during an antisubmarine warfare exercise. Sonar scans of the sub, like the one seen above, show the Stickleback is now broken in half, with its bow and stern sections lying on the seafloor almost 1,000 feet (300 m) apart.
A hardy grey feline in Russia got a new lease on life after suffering from frostbite. The female cat, named “Dymka” (Russian for “mist”) was found in 2018, buried in the Siberian snow, with four frostbitten paws, ears and a tail. The frostbite was so extensive that veterinarians had to amputate those limbs. But researchers at the Tomsk Polytechnic University in Tomsk, Russia created specially-designed titanium paws for the cat, then fused them to her leg bones. The new limbs were implanted in July 2019; just 7 months-later, scientists posted adorable video of Dymka stretching, playing and strolling.
The Grand Canyon of glaciers
Glaciers are giant slabs of ice sitting on top of continental bedrock. The bedrock below Denman Glacier — a 12-mile wide (20 kilometers) stream of ice in East Antarctica — happens to include the single deepest land canyon on Earth (shown as a dark blue streak in this NASA illustration). Known as the Denman trough, the canyon plunges 11,000 feet (3,500 meters) below sea level, and is almost entirely filled with glacial ice. That could pose a serious problem for Denman Glacier as global warming continues to push the glacier's underwater edge further and further into the canyon.
Starry, starry abdomen
Peacock spiders (genus Maratus) are known for their luminous badonkadonks, which males use to dazzle potential mates through sexy spider courtship dances. This year, an entomologist in Australia described seven brand new species of peacock spiders, thanks largely to crowd-sourced photos sent in from citizen scientists across the continent. Included among the new species is the looker shown above, Maratus constellatus, which entomologist Joseph Schubert named in honor of the twinkling blue-and-yellow heavens in Vincent Van Gogh's The Starry Night.
The golden age of Donkey Polo
Scientists recently found the first evidence that nobles in imperial China played donkey polo, in the tomb of a wealthy, important woman who died in Xi'an more than 2,000 years ago. The woman, named Cui Shi, was buried with donkeys, possibly so she could keep playing donkey polo in the afterlife, researchers reported in a new study. One of their toothy skulls is pictured above.
This year, researchers found a bee that had a male side and a female side — literally. The left side of the bee's body had male traits, while the right side of the body was female. On the female side of its head, the bee had a forward-facing antenna and a bigger mandible; the antenna on the male side swept backward and the jaw was noticeably smaller. Known as gynandromorphy, this rare condition has been documented in birds, insects, crustaceans and snakes.
Duck-billed, egg-laying platypuses just got a little weirder: It turns out their fur glows green and blue under ultraviolet (UV) light. Biofluorescence — absorbing and re-emitting light as a different color — is widespread in fish, amphibians, birds and reptiles. But the trait is much rarer in mammals, and this is the first evidence of biofluorescence in egg-laying mammals, also known as monotremes, scientists reported in a November 2020 study.
Tornado of fire
From September 2019 to March 2020, Australia endured one of the worst bushfire seasons in the continent's history. More than 46 million acres burned and thousands of homes were destroyed. Here, a fire tornado shoots through the sky near Sydney. These burning cyclones form when hot, dry air rises quickly from the ground to create vertical columns or chimney-like structures of swirling flames.
Woman seeks man in “erotic binding spell”
Scholars are translating an 1,800-year-old Egyptian papyrus describing what they call an “erotic binding spell,” in which a woman named Taromeway tries to attract a man named Kephalas. On the papyrus, a drawing shows the Egyptian jackal-headed god Anubis shooting an arrow into Kephalas, who is depicted nude. The arrow Anubis shoots is intended to inflame Kephalas' lust for Taromeway, researchers say.
Dagger of the lost empire
A teenager discovered a dagger in the 2,000-year-old grave of a Roman soldier buried in Germany. However, the dagger, which was still in its sheath, was so corroded that it took nine months to restore it with sandblasting and grinding techniques. Once cleaned, archaeologists were awed by the dagger and sheath's rich decorations, which included red glass, silver and enamel.
The world's longest “animal”
Underwater explorers found a 150-foot-long (45 meters) siphonophore — a translucent, stringy creature that, like coral, is made up of smaller critters — living in a submarine canyon off the coast of Australia. It's “seemingly the largest animal ever discovered,” they said. Every individual siphonophore is made up of many little “zooids,” each one performing a function for the siphonophore's larger body. Linked together in long chains, the colonies were already known to reach lengths of up to 130 feet (40 m) — though each siphonophore is only about as thick as a broomstick.
A tear in the ozone layer
In April, scientists detected what may be the largest hole in the ozone layer ever recorded over the North Pole. The hole in the ozone layer — a cushion of gas that shields Earth from the sun's ultraviolet rays — covers an area roughly three times the size of Greenland, scientists from the European Space Agency (ESA) said in a statement. (Fortunately, the hole closed on its own several weeks later.)
An alien rock's new origin story
The mysterious interstellar object ‘Oumuamua has baffled scientists since it first appeared in our solar system in October 2017. This year, a new simulation (pictured above) offered a compelling origin story for the strange object: Perhaps, the study claimed, the cigar-shaped rock is a mass of fragments shed by a distant comet or planet, which were bound together after venturing too close to their home star. (Others still believe the rock is an alien spacecraft).
Archaeologists recently created a digital reconstruction of a colorful leopard's face from a sarcophagus, found in a necropolis in Aswan, Egypt that dates to the seventh century B.C. More than 300 tombs were uncovered in this city of the dead, which was in use for about 1,000 years.
The moon as a telescope
Researchers want to build a giant telescope inside a crater on the “dark side” of the moon, and NASA is into the idea. In April, the U.S. space agency pledged $125,000 to testing the feasibility of the idea — now known as the “Lunar Crater Radio Telescope” — which could offer a much clearer picture of the cosmos than Earth-bound telescopes do.
Disfigured skull of the deep
Cave divers discovered the remains of a woman who lived about 9,900 years ago on what is now the Yucatán Peninsula. The woman's skull hints at a tumultuous end; she had three injuries on her head that were made with a hard object. In addition, pits and crater-like deformations on her skull may be signs of a bacterial relative of syphilis, which would make this woman the oldest inhabitant of the Americas to have this disease.
The galaxy's creamy center
In this composite image, swirls of gas and dust light up in infrared at the center of our galaxy, the Milky Way. The gorgeous, new image could help to explain an enduring mystery: why our galaxy's heart is missing stars. So even though there's a lot of raw material there for stars to form — gas and dust — that “stuff” isn't making stars. NASA said the high-resolution image revealed new features that could help to explain the odd star formation.
A farting gorilla chorus
Mountain gorillas were caught on camera “singing” during their supper, a behavior that has never before been documented on video. Filmmakers captured the astonishing footage of the primate crooners with a little help from a very special camera: a robotic “spy” designed to look like a young gorilla, custom-made for the PBS series, “Nature: Spy in the Wild 2.” Singing isn't all they heard; according to the show's narrator, the gorillas also live in “a near-permanent state of flatulence.”
Blood snow streaks Antarctica
Scientists found the ice near Verdansky Research Base in northern Antarctica eerily stained with crimson-colored snow this February. What looks like blood is actually a type of red-hued alga called Chlamydomonas nivalis. Every summer, when snow around the world begins to melt, the ice-dwelling algae emerge from their cold storage to take in nutrients and spread red spores across the snow. The phenomenon is known as “watermelon snow” or “blood snow,” and it's likely to happen more often as global temperatures rise.
The secret sword
A keen-eyed archaeology student made the find of a lifetime when she spotted one of the oldest swords on record, mistakenly grouped with medieval artifacts in a secluded Italian museum. The ancient sword was thought to be medieval in origin and maybe a few hundred years old at most — but studies have shown that it dates back about 5,000 years, to what is now eastern Turkey, where swords are thought to have been invented, in the early Bronze Age.