Largest shock wave in the universe is '60 times larger than the Milky Way,' new study finds
Largest shock wave in the universe is '60 times larger than the Milky Way,' new study finds | World's largest aircraft feared destroyed after Russian attack on Ukrainian airfield | Why do cats love boxes so much?
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What happens when two of the largest objects in the universe collide?
Simple, says a new study: They create one of the largest shock waves in the universe.
Located about 730 million light-years from Earth, Abell 3667 is a galaxy cluster in chaos. Actually composed of two clusters (or groups) of galaxies colliding into one another, Abell 3667 contains more than 550 individual galaxies slowly stirring into one big cosmic gumbo.
The world's largest aircraft, the Antonov AN-225, has been destroyed during Russia's invasion of Ukraine, Ukrainian authorities said on Sunday (Feb. 27).
The aircraft, named "Mriya," or "dream" in Ukrainian, was under repair at an open-air hangar at Hostomel airport, northwest of Ukraine's capital Kyiv, when it was reportedly attacked and destroyed by invading Russian forces.
It's a truism perhaps best exemplified by viral memes: Cats love to cram themselves into boxes or whatever other tight spaces they can find. But why do our feline friends do this? Why do cats love boxes so much?
The behavior comes from a simple animal desire, said Gabriella Smith, a doctoral candidate in comparative animal cognition at the University of Veterinary Medicine in Vienna.
Throughout human history, wars, battles and conflicts are thought to have resulted in the deaths of around 1 billion people. But that’s nothing compared with the number of humans killed by mosquitoes. The journal Nature suggests that nearly half of all humans who have lived during the past 50,000 years owe their death to this deadly insect and its capacity to transmit one particular disease: malaria.
Mosquitoes are central to the spread of malaria — which is caused by a parasite that killed around 627,000 people in 2020 alone — as well as viruses such as Zika, West Nile and dengue. The Anopheles gambiae mosquito, which is common in rural parts of Africa, is often dubbed the "most dangerous animal species on Earth," according to a 2020 study published in the journal the Proceedings of the National Academy of Sciences.
From food insecurity to our physical and mental health, the impact of climate change is affecting people around the world, and the window is rapidly closing for us to prevent catastrophic and irreversible consequences, according to a new report by the Intergovernmental Panel on Climate Change (IPCC), which evaluates climate science for the United Nations.
Written by 270 scientists representing 67 countries, this installment of the IPCC's Sixth Assessment Report is the second of three parts, with the first report published in August 2021 and the third anticipated in April. The new assessment was released on Monday (Feb. 28) and IPCC representatives outlined at a virtual press event how climate change is hitting billions of people where we live.
After an elderly patient died suddenly during a routine test, scientists accidentally captured unique data on the activity in his brain at the very end of his life: During the 30 seconds before and after the man's heart stopped, his brain waves were remarkably similar to those seen during dreaming, memory recall and meditation, suggesting that people may actually see their life "flash before their eyes" when they die.
The phenomenon of replaying past memories when you die has been reported by some people who have had near-death experiences. But this is the first scientific evidence that this "flash" might be real. However, as this is the only case study, it is impossible to make further assumptions about how common the phenomenon may be or what the experience may be like.
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