The Solar System may be an even soggier place than we suspected. New analysis of one of Saturn’s moons suggests that it may harbor a liquid ocean. No, not the usual suspects – the new culprit is Mimas, the little moon with a big crater, which gives it more than a passing resemblance to the
admin
We often think of supernova explosions as inevitable for large stars. Big star runs out of fuel, gravity collapses its core, and BOOM! But astronomers have long thought at least one type of large star didn’t end with a supernova. Known as Wolf-Rayet stars, they were thought to end with a quiet collapse of their core
The ongoing volcanic eruption in Tonga began in December 2021, but it wasn’t until 5:15 pm local time on January 15, 2022, that the powerful explosion occurred. It generated an enormous cloud of ash, earthquakes, and tsunamis that reached as far as the distant coastlines of Peru on the other side of the Pacific. Now
In less than 24 hours the Bulletin of the Atomic Scientists will update the Doomsday Clock. It’s currently at 100 seconds from midnight – the metaphorical time when the human race could destroy the world with technologies of its own making. The hands have never before been this close to midnight. There is scant hope
A major milestone has just been reached in quantum computing. Three separate teams around the world have passed the 99 percent accuracy threshold for silicon-based quantum computing, placing error-free quantum operations within tantalizing grasp. In Australia, a team led by physicist Andrea Morello of the University of New South Wales achieved 99.95 percent accuracy with
From sea to land to sky, Earth’s systems are contaminated with synthetic substances, and scientists warn it has already pushed the integrity of our planet over the brink. Today, there are about 350,000 human-made chemicals on the market, including plastics, pesticides, industrial chemicals, cosmetic chemicals, antibiotics, and other drugs. The fact this number continues to
With the rapid expansion of commercial space, there is a growing number of satellites in orbit around our planet. Most of these are in low-Earth orbit, which is becoming increasingly crowded. This has led some to be concerned about a catastrophic rise of space debris, as well as a growing frustration by astronomers due to
Because we can’t see black holes, it’s hard to know exactly how many are out there in the big, wide Universe. But that doesn’t mean we have no means of trying to figure it out. Stellar-mass black holes are the collapsed cores of dead massive stars, and new research incorporating how these stars and binaries
A team of researchers hunting for the wreck of a lost WWII destroyer ship in the Philippine Sea returned to land with another, perhaps even more exciting discovery: video evidence of the deepest-swimming squid ever recorded. Cruising just above the floor of the Philippine Trench at a staggering 20,300 feet (6,200 meters) below the surface,
The Earth Biogenome Project, a global consortium that aims to sequence the genomes of all complex life on earth (some 1.8 million described species) in ten years, is ramping up. The project’s origins, aims and progress are detailed in two multi-authored papers published today. Once complete, it will forever change the way biological research is
The question of how life first sparked into existence on our planet is one we haven’t yet fully answered, but science is getting closer all the time – and a new study identifies the structures of the proteins that may well have made it happen. To begin with, the team behind the study decided to
As it’s the foundation for all life on Earth, discovering carbon on other planets always gets scientists excited – and the Curiosity Rover on Mars has found an unusual mix of the chemical element that could hypothetically point to the existence of alien life. That’s by no means certain, but it’s a possibility. It’s one
The signs of death are everywhere, if you look. For years, scientists have rung the alarm bell, warning that grave declines in animal biodiversity around the globe herald the onset of what will be Earth’s sixth mass extinction. Despite the looming weight of evidence to suggest this grim phenomenon is unfolding all around us, not
A new image of the Flame Nebula shows the interstellar cloud as we’ve never seen it before. A team of astronomers using the Atacama Pathfinder Experiment (APEX) telescope has captured the star-forming region in radio wavelengths, revealing details that we had never seen before. The Flame Nebula, which is close to the famous Horsehead Nebula,
While most of us avoid creepy-crawlies at all costs, entomologists – scientists who study insects – need to actively go looking for them. “My colleague noticed a dead tree in the middle of our university campus,” entomologist Adrian Smith from the North Carolina Museum of Natural Sciences told ScienceAlert. “If you’re an entomologist, when you see
In a slow-moving universe, asteroids give us a rare chance to see things moving in real time. We have such a chance coming right up on the evening of Tuesday, January 18th, when 1.1-kilometer asteroid (7482) 1994 PC1 passes 1.23 million miles (1.98 million kilometers) from Earth. This is about five times the distance from
Planetary-scale engineering schemes designed to cool Earth’s surface and lessen the impact of global heating are potentially dangerous and should be blocked by governments, more than 60 policy experts and scientists said on Monday. Even if injecting billions of sulphur particles into the middle atmosphere – the most hotly debated plan for so-called solar radiation modification
In 2018, archaeologists described a truly fascinating puzzle. It looks like this medieval Italian man went through life with a knife attached to his arm, in place of his amputated hand. The skeleton in question was found in a Longobard necropolis in the north of Italy, dating back to around the 6th to 8th centuries CE.
Cultured meat grown in a lab has the potential to be much more environmentally friendly than current practices in the agriculture industry, but a new study has revealed a looming problem: a lot of people really don’t like the idea of eating it. We’re talking here about meat produced in the laboratory from real animal
The road to life in the Arabian desert might once have been paved with the dead. In what is now Saudi Arabia, archaeologists have revealed an impressive network of lost highways, marked by human tombs, that link one oasis to another. Many thousands of years ago, these roads would have led Bedouin people and their
Earth formed 4.5 billion years or so ago. Ever since then, it’s been slowly cooling on the inside. While the surface and atmosphere temperatures fluctuate over the eons (and yes, those external temperatures are currently warming), the molten interior – the beating heart of our planet – has been cooling this entire time. That’s not
The human body did not evolve to handle life in space, and it shows in our very blood. Since our species first started to spend extended periods of time beyond our planet, researchers have noticed a curious and consistent loss of red blood cells among astronauts. The phenomenon is called ‘space anemia’, and until recently,
Beyond the Solar System, out there in the wider galaxy, a very strange subset of exoplanets exists. Called hot Jupiters, these are majorly clingy – hugging so close to their host stars, they’re not just intensely hot, but also likely warped by gravitational forces. Now, for the first time, astronomers have actually detected the warped
A mesmerizing new video shows a “once-in-a-lifetime encounter” with a bizarre, bright red octopus swimming above the Great Barrier Reef in northeastern Australia. The encounter, first reported by local Australian news website Bundaberg Now, was a rare sighting of a blanket octopus, named after the blanket-like fleshy cape between its arms. Jacinta Shackleton, a marine biologist and reef guide, filmed and photographed
The Kingdom of Tonga doesn’t often attract global attention, but a violent eruption of an underwater volcano on January 15 has spread shock waves, quite literally, around half the world. The volcano is usually not much to look at. It consists of two small uninhabited islands, Hunga-Ha’apai and Hunga-Tonga, poking about 100 meters (328 feet)
Scientists in China say they have found the oldest flower bud in the fossil record, finally aligning the fossil evidence with the genetic data suggesting flowering plants, or angiosperms, evolved tens of millions of years earlier than we initially thought. The team hopes their discovery will help “ease the pain” around a nagging, centuries-old mystery that Charles
When the full Moon rises, strange things can happen here on Earth. Oysters snap close. Corals spawn. Zooplankton dive deeper. Seabirds stick to the shore. And lions hunt less. Several of these behaviors are tied to moonlight; others, to tides. But some have no clear explanation at all. More than 50 years’ worth of shark attack
In 2020, the World Health Organization (WHO) estimated that almost half the world’s population was at risk of malaria, while some 627,000 people died from the disease. Although a malaria vaccine may soon be available (the WHO recommended one for children last year), malaria is just one of several mosquito-borne diseases. And the total number
It’s been half a century since the Apollo missions returned from the Moon, and yet the lunar samples they brought home continue to baffle us. Some of these rocks are more than 3 billion years old and appear to have been formed in the presence of a strong geomagnetic field, like the one on Earth.
Reanalyzing fossils can often lead to new discoveries, as has been the case with a study of an 80 million-year-old Late Cretaceous Struthiosaurus austriacus skull. A new analysis reveals the dinosaur was likely sluggish in its movements and was probably largely deaf as well. Researchers used a high-resolution 3D scan of a partial braincase section –
Frightened Tongans fled to higher ground Saturday after a massive volcanic eruption sent tsunami waves crashing onto the South Pacific island and triggered warnings as far as the US West Coast. Dramatic images from space showed the moment the latest eruption of the Hunga Tonga-Hunga Ha’apai sent a mushroom of smoke and ash into the
From the fragrance of brewing coffee to the smell of rain soaking the soil, distinguishing scents is one of the reasons that having a sense of smell is wonderful. But how smells such as coffee can be understood by our brain, no matter the season, location, or time is a complex question to answer. There’s
Mesopotamians were using hybrids of domesticated donkeys and wild asses to pull their war wagons 4,500 years ago – at least 500 years before horses were bred for the purpose, a new study reveals. The analysis of ancient DNA from animal bones unearthed in northern Syria resolves a long-standing question of just what type of animals were
The ancient Wari empire of Peru might have used hallucinogenic beer to rally support in new territories. The remnants of a large feast, found at a Wari outpost from the ninth century CE, strongly suggest the seeds of a psychoactive plant called vilca (Anadenanthera colubrina) were once mixed with chicha, a beer made from the fruit
The Dark Energy Spectroscopic Instrument (DESI), currently pointed at the skies from its home in the Nicholas U. Mayall Telescope at the Kitt Peak National Observatory in Arizona, is tasked with charting the expansion of space, investigating dark energy, and creating the most detailed 3D map of the Universe that’s ever been put together. It’s only
A small pile of pebbles is clogging up the Perseverance Mars rover’s operations. The rover, which is collecting rock samples for eventual return to Earth, began to struggle on Dec. 29, after extracting a core from a rock the mission team nicknamed “Issole.” According to a NASA blog, the problem occurred in the device that transfers the
New Year’s Day comes around once every 47.5 hours on the roughly Neptune-sized exoplanet TOI 674b, which makes it something of a rare creature. In spite of years of hunting, surprisingly few middle-sized gas giants have ever been seen with orbits shorter than a few days in length, creating what astronomers refer to as a
The nine years spanning 2013-2021 all rank among the 10 hottest on record, according to an annual report a US agency released Thursday, the latest data underscoring the global climate crisis. For 2021, the average temperature across global surfaces was 1.51 degrees Fahrenheit (0.84 degrees Celsius) above the 20th-century average, making the year the sixth-hottest
Scientists onboard an icebreaker in Antarctica were blown away when they spied a trove of 60 million icefish nests dotting the floor of the Weddell Sea. The bonanza of nurseries – each guarded by a ghostly looking parent – represents the largest known breeding colony of fish. Autun Purser of the Alfred Wegener Institute was on the bridge
To date, we’ve found over a hundred precious Mars rocks that have travelled from the red planet and landed on Earth at some point. Among those, specimen ALH84001 might well be one of the most enigmatic. This meteorite fragment was picked up during a snowmobile ride in the ice field of Alan Hills in Antarctica in
The Milky Way should be absolutely riddled with moons, when you think about it. The Solar System has 8 official planets, yet at least 25 times as many moons. However, while we’ve confirmed nearly 5,000 exoplanets (that’s planets outside the Solar System) to date, exomoons are scant, to say the least. One tentative detection was made in
It’s a common misconception that evolution has a sense of direction – a notion that biology nerds around the world are constantly trying to correct. But new research reveals there may be a semblance of truth to this misconception, at least more than we ever realized. While it’s not as straightforward as mutation with a
Located in the Okanagan Valley outside of Penticton, British Columbia, there is a massive radio observatory dedicated to observing cosmic radio phenomena. It’s called the Canadian Hydrogen Intensity Mapping Experiment (CHIME), a cylindrical parabolic radio telescope that looks like what snowboarders would call a “half-pipe”. This array is part of the Dominion Radio Astrophysical Observatory
Ever since scientists made the first detection of gravitational waves from a pair of colliding black holes in 2015, evidence has been growing that the Universe ought to be full of them. Every massive event – every black hole or neutron star merger, every supernova – should have sent gravitational waves ringing out across space-time.
Goldfish may have short memories but, according to an Israeli university study, they might be able to drive. Researchers at Ben-Gurion University of the Negev found that a goldfish’s innate navigational abilities allowed it to steer a robotic vehicle towards a terrestrial target if given a food reward. To conduct their unusual experiment, the team
Thawing Arctic permafrost laden with billions of tonnes of greenhouse gases not only threatens the region’s critical infrastructure but life across the planet, according to a comprehensive scientific review. Nearly 70 percent of the roads, pipelines, cities, and industry – mostly in Russia – built on the region’s softening ground are highly vulnerable to acute
Wherever there is sand and an atmosphere, prevailing winds may whip the grains into undulating shapes, pleasing to the eye with their calming repetition. Certain sand waves, with wavelengths between 30 centimeters (almost 12 inches) and several meters (around 30 feet), are known as megaripples: they’re between ordinary beach ripples and full dunes in size,
The Solar System floats in the middle of a peculiarly empty region of space. This region of low-density, high-temperature plasma, about 1,000 light-years across, is surrounded by a shell of cooler, denser neutral gas and dust. It’s called the Local Bubble, and precisely how and why it came to exist, with the Solar System floating
- 1
- 2
- 3
- …
- 129
- Next Page »