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Hope for life on Venus survives for centuries against all odds – Finance Brokerage

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If you’re looking for an exemplar of mastering multiple identities, find a telescope and point it at Venus.

In both astronomy and popular culture, Venus has always assumed a diversity of guises. Morning star, evening star. Goddess. Planet. Frankie Avalon song. A plant that eats flies. And the realm ruled by women in the unforgettable film Queen of Outer Space (starring Zsa Zsa Gabor as the nemesis of the evil queen).

So it’s not surprising that Venus enjoys sufficient celebrity status to warrant big-type headlines when it makes news, or at least a lot of social media hype. In the latest such instance, all it took was a whiff of a noxious gaseous chemical in the planet’s clouds, hinting that Venus might harbor life, to stop the presses and start the tweetstorms. After all, life on Venus would be a big surprise. Scientists have long considered it the hell of the solar system, hotter than molten lead and with an unbreathable atmosphere.

Yet, as it was so ably reported by Lisa Grossman for Science News, the chemical in question, phosphine, is no guarantee of life on Venus. It’s just that the known nonbiologic ways to make phosphine do not seem plausible in the Venusian environment. Phosphine’s persistence in the clouds shrouding Venus suggests something must be currently producing it — otherwise the sulfuric acid in the planet’s upper atmosphere would have destroyed any signs of the gas by now. So phosphine might be a signal of life — perhaps some form of anaerobic bacteria (which do not require oxygen), as phosphine would be deadly to life that relied on oxygen.

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On the other hand, maybe there’s just a gap in Earthling chemistry textbooks, and some weird geochemical reactions produce Venusian phosphine. That’s probably a better bet than airborne anaerobic alien organisms. Phosphine as evidence of life on Venus may turn out to be as reliable as the famous “canals” once regarded as evidence for life on Mars.

Still, hope for life on Venus never dies. In centuries past, in fact, many scientists simply assumed that Venus possessed life. In the late 17th century, Bernard le Bovier de Fontenelle, a French popularizer of science, surmised Venus to be inhabited by a gallant race of lovers. “The climate is most favorable for love matches,” he wrote. About the same time, the Dutch physicist and astronomer Christiaan Huygens contemplated life on Venus. Venusians would receive twice the light and heat from the sun as Earthlings do, he knew, but noted that Earth’s tropics, though much hotter than northern lands, are successfully occupied by people. For that matter, Huygens believed much hotter Mercury to be populated as well, and that the Mercurians would no doubt consider Earth much too cold and dark to support life.

In the 19th century, spectroscopic examination of Venus suggested that its atmosphere was similar to Earth’s, containing water vapor and oxygen. Since Earth’s atmospheric composition owed so much to life, it seemed obvious that life — at least plants— must exist on Venus as well. “If there be oxygen in the atmosphere of Venus, then it would seem possible that there might be life on that globe not essentially different in character from some forms of life on the earth,” astronomer Robert S. Ball wrote in his widely read late 19th century book The Story of the Heavens. “If water be present on the surface of Venus and if oxygen be a constituent of its atmosphere, we might expect to find in that planet a luxuriant tropical life.”

As late as 1918, Svante Arrhenius, a Nobel chemistry laureate, estimated that water was especially abundant on Venus, with humidity six times the average on Earth. “We must therefore conclude that everything on Venus is dripping wet” — thereby accelerating the growth of vegetation, Arrhenius wrote.

But the early observations of Venus’ atmosphere were crude. About a century ago, refined techniques at the Mount Wilson Observatory in California contradicted the previous findings; oxygen and water vapor actually seemed scarce in the Venusian clouds. (In fact, as spacecraft visiting Venus in recent decades have shown, the air there is nearly all carbon dioxide with a little bit of nitrogen, plus only slight traces of water.) “It may be that the exacting conditions for the origin of life have not been satisfied” on Venus, Charles E. St. John and Seth B. Nicholson wrote in 1922 in the Astrophysical Journal.

Of course, it was possible that conditions on the surface, hidden by the thick clouds, might still allow life to find a way. 

“There is a possibility that the atmosphere of Venus is permeated with a finely divided dust, a possible product of intense volcanic activity, which would act as an excellent reflector of the sun’s rays and would at the same time effectually conceal the surface,” Isabel Lewis of the U.S. Naval Observatory wrote in Science News-Letter, the predecessor of Science News, in 1922. In 1926, the prominent astronomer Harlow Shapley maintained that in the solar system, Venus “more nearly fulfills the conditions (for life) than any planet other than the Earth…. But we cannot penetrate the dense covering of clouds and seek out the secrets of its surface.”

In 1927, Science News-Letter writer Frank Thone surveyed the prospects for life on other planets and declared Venus “the darling of the solar system” (excepting Earth, of course). While Mars seemed “wry and withered,” he wrote, “our sister Venus seems to have the vigor and sap of life in her.”

Yet as Thone acknowledged, the thick atmosphere guarding Venus’ surface from view made the question of life there unanswerable — probably, Thone guessed, for many generations.

And so today, the mystery remains unsolved. Phosphine sightings leave the question of whether Venus hosts life in a situation similar to that of Mars, long ago, when the newspaper publisher William Randolph Hearst (legend has it) cabled an astronomer asking for an article on the topic. “Is there life on Mars? Please cable one thousand words,” Hearst wrote. To which the astronomer cabled back: “Nobody knows. Repeat 500 times.”

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Here’s how Helene and other storms dumped a whopping 40 trillion gallons of rain on the South

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More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts.

That’s enough to fill the Dallas Cowboys’ stadium 51,000 times, or Lake Tahoe just once. If it was concentrated just on the state of North Carolina that much water would be 3.5 feet deep (more than 1 meter). It’s enough to fill more than 60 million Olympic-size swimming pools.

“That’s an astronomical amount of precipitation,” said Ed Clark, head of the National Oceanic and Atmospheric Administration’s National Water Center in Tuscaloosa, Alabama. “I have not seen something in my 25 years of working at the weather service that is this geographically large of an extent and the sheer volume of water that fell from the sky.”

The flood damage from the rain is apocalyptic, meteorologists said. More than 100 people are dead, according to officials.

Private meteorologist Ryan Maue, a former NOAA chief scientist, calculated the amount of rain, using precipitation measurements made in 2.5-mile-by-2.5 mile grids as measured by satellites and ground observations. He came up with 40 trillion gallons through Sunday for the eastern United States, with 20 trillion gallons of that hitting just Georgia, Tennessee, the Carolinas and Florida from Hurricane Helene.

Clark did the calculations independently and said the 40 trillion gallon figure (151 trillion liters) is about right and, if anything, conservative. Maue said maybe 1 to 2 trillion more gallons of rain had fallen, much if it in Virginia, since his calculations.

Clark, who spends much of his work on issues of shrinking western water supplies, said to put the amount of rain in perspective, it’s more than twice the combined amount of water stored by two key Colorado River basin reservoirs: Lake Powell and Lake Mead.

Several meteorologists said this was a combination of two, maybe three storm systems. Before Helene struck, rain had fallen heavily for days because a low pressure system had “cut off” from the jet stream — which moves weather systems along west to east — and stalled over the Southeast. That funneled plenty of warm water from the Gulf of Mexico. And a storm that fell just short of named status parked along North Carolina’s Atlantic coast, dumping as much as 20 inches of rain, said North Carolina state climatologist Kathie Dello.

Then add Helene, one of the largest storms in the last couple decades and one that held plenty of rain because it was young and moved fast before it hit the Appalachians, said University of Albany hurricane expert Kristen Corbosiero.

“It was not just a perfect storm, but it was a combination of multiple storms that that led to the enormous amount of rain,” Maue said. “That collected at high elevation, we’re talking 3,000 to 6000 feet. And when you drop trillions of gallons on a mountain, that has to go down.”

The fact that these storms hit the mountains made everything worse, and not just because of runoff. The interaction between the mountains and the storm systems wrings more moisture out of the air, Clark, Maue and Corbosiero said.

North Carolina weather officials said their top measurement total was 31.33 inches in the tiny town of Busick. Mount Mitchell also got more than 2 feet of rainfall.

Before 2017’s Hurricane Harvey, “I said to our colleagues, you know, I never thought in my career that we would measure rainfall in feet,” Clark said. “And after Harvey, Florence, the more isolated events in eastern Kentucky, portions of South Dakota. We’re seeing events year in and year out where we are measuring rainfall in feet.”

Storms are getting wetter as the climate change s, said Corbosiero and Dello. A basic law of physics says the air holds nearly 4% more moisture for every degree Fahrenheit warmer (7% for every degree Celsius) and the world has warmed more than 2 degrees (1.2 degrees Celsius) since pre-industrial times.

Corbosiero said meteorologists are vigorously debating how much of Helene is due to worsening climate change and how much is random.

For Dello, the “fingerprints of climate change” were clear.

“We’ve seen tropical storm impacts in western North Carolina. But these storms are wetter and these storms are warmer. And there would have been a time when a tropical storm would have been heading toward North Carolina and would have caused some rain and some damage, but not apocalyptic destruction. ”

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Follow AP’s climate coverage at https://apnews.com/hub/climate

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Follow Seth Borenstein on Twitter at @borenbears

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Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

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‘Big Sam’: Paleontologists unearth giant skull of Pachyrhinosaurus in Alberta

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It’s a dinosaur that roamed Alberta’s badlands more than 70 million years ago, sporting a big, bumpy, bony head the size of a baby elephant.

On Wednesday, paleontologists near Grande Prairie pulled its 272-kilogram skull from the ground.

They call it “Big Sam.”

The adult Pachyrhinosaurus is the second plant-eating dinosaur to be unearthed from a dense bonebed belonging to a herd that died together on the edge of a valley that now sits 450 kilometres northwest of Edmonton.

It didn’t die alone.

“We have hundreds of juvenile bones in the bonebed, so we know that there are many babies and some adults among all of the big adults,” Emily Bamforth, a paleontologist with the nearby Philip J. Currie Dinosaur Museum, said in an interview on the way to the dig site.

She described the horned Pachyrhinosaurus as “the smaller, older cousin of the triceratops.”

“This species of dinosaur is endemic to the Grand Prairie area, so it’s found here and nowhere else in the world. They are … kind of about the size of an Indian elephant and a rhino,” she added.

The head alone, she said, is about the size of a baby elephant.

The discovery was a long time coming.

The bonebed was first discovered by a high school teacher out for a walk about 50 years ago. It took the teacher a decade to get anyone from southern Alberta to come to take a look.

“At the time, sort of in the ’70s and ’80s, paleontology in northern Alberta was virtually unknown,” said Bamforth.

When paleontogists eventually got to the site, Bamforth said, they learned “it’s actually one of the densest dinosaur bonebeds in North America.”

“It contains about 100 to 300 bones per square metre,” she said.

Paleontologists have been at the site sporadically ever since, combing through bones belonging to turtles, dinosaurs and lizards. Sixteen years ago, they discovered a large skull of an approximately 30-year-old Pachyrhinosaurus, which is now at the museum.

About a year ago, they found the second adult: Big Sam.

Bamforth said both dinosaurs are believed to have been the elders in the herd.

“Their distinguishing feature is that, instead of having a horn on their nose like a triceratops, they had this big, bony bump called a boss. And they have big, bony bumps over their eyes as well,” she said.

“It makes them look a little strange. It’s the one dinosaur that if you find it, it’s the only possible thing it can be.”

The genders of the two adults are unknown.

Bamforth said the extraction was difficult because Big Sam was intertwined in a cluster of about 300 other bones.

The skull was found upside down, “as if the animal was lying on its back,” but was well preserved, she said.

She said the excavation process involved putting plaster on the skull and wooden planks around if for stability. From there, it was lifted out — very carefully — with a crane, and was to be shipped on a trolley to the museum for study.

“I have extracted skulls in the past. This is probably the biggest one I’ve ever done though,” said Bamforth.

“It’s pretty exciting.”

This report by The Canadian Press was first published Sept. 25, 2024.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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