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The Red Sky Paradox Will Make You Question Our Very Place in The Universe
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The Red Sky Paradox Will Make You Question Our Very Place in The Universe
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ScienceAlert
The Red Sky Paradox Will Make You Question Our Very Place in The Universe
On the grand cosmic scale, our little corner of the Universe isn't all that special – this idea lies at the heart of the Copernican principle. Yet there's one major aspect about our planet that's peculiar indeed: Our Sun is a yellow dwarf.
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The 3,000-Year-Old Mummy of a Famous Egyptian Pharaoh Has Been Digitally Unwrapped
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The 3,000-Year-Old Mummy of a Famous Egyptian Pharaoh Has Been Digitally Unwrapped
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The 3,000-Year-Old Mummy of a Famous Egyptian Pharaoh Has Been Digitally Unwrapped
The mummy of ancient Egyptian pharaoh Amenhotep I was so exquisitely wrapped – decorated with flower garlands and buried with a lifelike face mask – scientists have been hesitant to open up the remains. That is, until now.
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There Was a Major Unexpected Benefit to James Webb's Christmas Launch
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There Was a Major Unexpected Benefit to James Webb's Christmas Launch
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ScienceAlert
There Was a Major Unexpected Benefit to James Webb's Christmas Launch
After a detailed analysis of where the James Webb Space Telescope is now (29 December 2021) and how it got there, NASA determined the observatory should have enough propellant to operate in space for significantly more than 10 years in space.
Happy New Year, Earth!
Now it's officially 2022 all around our little but precious planet.
Two hours ago people from the west of Alaska, Hawaii, French Polynesia and Cook Islands celebrated the new 2022 year.
Officially the last to meet the new year are small uninhabited islands in the Pacific Ocean - Baker Island and Howland Island.
But technically Tonga, Wallis and Futuna and Chatham Islands as well as parts of Chukotka Autonomous Okrug of Russia, the US state of Alaska, Fiji, Tokelau and Samoa) all lie within that time zone. They all chose a different zone - the same as the nearest other territory - out of convenience. Most celebrated the new year full 24 hours ago!
Let the next year be great for everyone!
Now it's officially 2022 all around our little but precious planet.
Two hours ago people from the west of Alaska, Hawaii, French Polynesia and Cook Islands celebrated the new 2022 year.
Officially the last to meet the new year are small uninhabited islands in the Pacific Ocean - Baker Island and Howland Island.
But technically Tonga, Wallis and Futuna and Chatham Islands as well as parts of Chukotka Autonomous Okrug of Russia, the US state of Alaska, Fiji, Tokelau and Samoa) all lie within that time zone. They all chose a different zone - the same as the nearest other territory - out of convenience. Most celebrated the new year full 24 hours ago!
Let the next year be great for everyone!
ScienceAlert - Latest
This Mysterious Fire in Australia Has Been Burning For at Least 6,000 Years
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This Mysterious Fire in Australia Has Been Burning For at Least 6,000 Years
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ScienceAlert
This Mysterious Fire in Australia Has Been Burning For at Least 6,000 Years
In a national park a four-hour drive north of Sydney in Australia, a fire is smoldering out of control – and it's been doing so for at least 6,000 years.
How a handful of prehistoric geniuses launched humanity’s technological revolution
For the first few million years of human evolution, technologies changed slowly. Some three million years ago, our ancestors were making chipped stone flakes and crude choppers. Two million years ago, hand-axes. A million years ago, primitive humans sometimes used fire, but with difficulty. Then, 500,000 years ago, technological change accelerated, as spearpoints, firemaking, axes, beads and bows appeared.
One person could literally change the course of history, with nothing more than an idea.
One person could literally change the course of history, with nothing more than an idea.
The Conversation
How a handful of prehistoric geniuses launched humanity’s technological revolution
The stone age saw a pattern where technologies like spears, fire and bows were invented once, then spread
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Stunning, Otherworldly Images of Mars Captured by China's Mars Orbiter
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Stunning, Otherworldly Images of Mars Captured by China's Mars Orbiter
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ScienceAlert
Stunning, Otherworldly Images of Mars Captured by China's Mars Orbiter
High above the red planet, China's Mars orbiter Tianwen 1 has captured a series of incredible, alien images of our neighboring planet.
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NASA's New Flagship Telescope Fully Deploys Sunshield in Critical Mission Milestone
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NASA's New Flagship Telescope Fully Deploys Sunshield in Critical Mission Milestone
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ScienceAlert
NASA's New Flagship Telescope Fully Deploys Sunshield in Critical Mission Milestone
The James Webb Space Telescope fully deployed its tennis-court sized sunshield Tuesday, a critical milestone for the success of its mission to study every phase of cosmic history, NASA said.
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China's 'Artificial Sun' Just Broke a Major World Record For Plasma Fusion
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China's 'Artificial Sun' Just Broke a Major World Record For Plasma Fusion
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ScienceAlert
China's 'Artificial Sun' Just Broke a Major World Record For Plasma Fusion
Just seven months after it announced a milestone record for plasma fusion, the Chinese Academy of Sciences has absolutely smashed it.
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Mind-Blowing New Fossil Site Found in The 'Dead' Heart of Australia
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Mind-Blowing New Fossil Site Found in The 'Dead' Heart of Australia
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ScienceAlert
Mind-Blowing New Fossil Site Found in The 'Dead' Heart of Australia
The arid heart of Australia may not easily support life now, but once, many aeons ago, it was lush and teeming. What is now arid desert and dry shrub- and grasslands was once thick with dense forests, alive with life.
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For The First Time, We've Seen a Red Giant Star Transition Into a Supernova
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For The First Time, We've Seen a Red Giant Star Transition Into a Supernova
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ScienceAlert
For The First Time, We've Seen a Red Giant Star Transition Into a Supernova
We're seeing many spectacular sights out in space as our telescopes become more powerful, but there's a new contender for the most exciting one yet: According to researchers, we've observed a red supergiant star exploding into a supernova for the f
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Ocean Battery stores renewable energy at the bottom of the sea
As useful as renewable energy sources are, they need to be backed up by storage systems that hold energy for times when the Sun isn’t shining or the wind isn’t blowing. Ocean Battery is a new design for an energy storage system that functions a bit like a hydroelectric dam at the bottom of the sea: https://newatlas.com/energy/ocean-battery-renewable-energy-storage/
#energy #technology
As useful as renewable energy sources are, they need to be backed up by storage systems that hold energy for times when the Sun isn’t shining or the wind isn’t blowing. Ocean Battery is a new design for an energy storage system that functions a bit like a hydroelectric dam at the bottom of the sea: https://newatlas.com/energy/ocean-battery-renewable-energy-storage/
#energy #technology
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In a Truly Historic Milestone, JWST Has Been Successfully Deployed! Now What?
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In a Truly Historic Milestone, JWST Has Been Successfully Deployed! Now What?
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ScienceAlert
In a Truly Historic Milestone, JWST Has Been Successfully Deployed! Now What?
We can all let out a collective sigh of relief. With its primary mirror array fully unfolded, the major components of the beleaguered James Webb Space Telescope are now deployed, and it continues to calmly make its way to its destination.
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Surgeons Implant Pig Heart Into Human Patient in World-First Case
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Surgeons Implant Pig Heart Into Human Patient in World-First Case
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ScienceAlert
Surgeons Implant Pig Heart Into Human Patient in World-First Case
US surgeons have successfully implanted a heart from a genetically modified pig in a human patient, a first-of-its-kind procedure, the University of Maryland Medical School said Monday.
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Ten Scientific Discoveries From 2021 That May Lead to New Inventions
From nanobots to cancer treatments, nature inspires a wide variety of innovations
In science, inspiration can come from anywhere.
A researcher might wonder about the thrust produced by butterfly wings as they flit through a meadow. Maybe watching squirrels navigate campus trees like parkour artists sparks curiosity about what goes through their furry little minds as they decide to jump from branch to branch. Others, of course, get their spark from less likely sources: analyzing shark intestines or studying how microscopic water bears walk.
These scenarios and more inspired scientists to take a closer look at the natural world this year, but their influence won’t stop there. Discoveries in nature often inspire new designs for water filtration, solar panels, building materials and lots and lots of robots.
Here are ten findings from 2021 that could one day lead to new inventions.
From nanobots to cancer treatments, nature inspires a wide variety of innovations
In science, inspiration can come from anywhere.
These scenarios and more inspired scientists to take a closer look at the natural world this year, but their influence won’t stop there. Discoveries in nature often inspire new designs for water filtration, solar panels, building materials and lots and lots of robots.
Here are ten findings from 2021 that could one day lead to new inventions.
ScienceAlert - Latest
Microbes in The Ocean Depths Can Make Oxygen Without Sun. This Discovery Could Be Huge
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Microbes in The Ocean Depths Can Make Oxygen Without Sun. This Discovery Could Be Huge
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ScienceAlert
Microbes in The Ocean Depths Can Make Oxygen Without Sun. This Discovery Could Be Huge
For most of life on Earth, oxygen is essential, and sunlight is usually needed to produce that oxygen. But in an exciting twist, researchers have caught a common, ocean-dwelling microbe breaking all the rules.
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A Rare, Isolated Script Invented From Scratch Holds Clues to The Evolution of Writing
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A Rare, Isolated Script Invented From Scratch Holds Clues to The Evolution of Writing
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ScienceAlert
A Rare, Isolated Script Invented From Scratch Holds Clues to The Evolution of Writing
A rare script from a language in Liberia has provided some new insights into how written languages evolve.
Evolution study suggests DNA mutations are less random than we thought
Chance plays a big part in evolution. Conventional thinking goes that DNA mutations will randomly arise in an organism’s genome, and if these new traits happen to help the organism survive and reproduce, then those mutations will be passed down to the next generation. Over a long enough period, the traits can become characteristic of a population or species.
But is there a pattern to where in the genome DNA mutations occur?
To investigate, researchers from UC Davis and the Max Planck Institute grew hundreds of thale cress plants in the lab , then sequenced their genomes and compared where DNA mutations had taken place – and a non-random pattern seemed to emerge.
“We always thought of mutation as basically random across the genome,” says Grey Monroe, lead author of the study. “It turns out that mutation is very non-random and it’s non-random in a way that benefits the plant. It’s a totally new way of thinking about mutation.
Chance plays a big part in evolution. Conventional thinking goes that DNA mutations will randomly arise in an organism’s genome, and if these new traits happen to help the organism survive and reproduce, then those mutations will be passed down to the next generation. Over a long enough period, the traits can become characteristic of a population or species.
But is there a pattern to where in the genome DNA mutations occur?
“We always thought of mutation as basically random across the genome,” says Grey Monroe, lead author of the study. “It turns out that mutation is very non-random and it’s non-random in a way that benefits the plant. It’s a totally new way of thinking about mutation.