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The Elegant Nature of Science 2.0

The Elegant Nature of Science 2.0
Ill take a wild guess now: small ones will be called "rat" Angel  ......oops that name is already taken.  girl blushing
R.I.P. Hannes

The Elegant Nature of Science 2.0

A new study shows that the deepest point on land is under the Denman Glacier in East Antarctica. Glaciologists at the University of California, Irvine, were mapping the area only to find that the trough under the glacier went far deeper than they had imagined.

The trough is about 3.5 km (about 2 miles) below sea level but there is no ocean water there. Instead, it is filled with ice flowing from the interior of the ice sheet towards the coast. The trough measures about 100 km in length and is 20 km wide, according to the study.
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The Elegant Nature of Science 2.0
My cousins from Minnesota are here for the holidays and we are up in Big Bear skiing.
We were arguing about whether California has shorter days than Minnesota.
Still don't have the answer to that, but it was interesting to find that their sunsets start getting later before the equinox.
That is weird.
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  • Deesse23

The Elegant Nature of Science 2.0
(12-21-2019, 06:02 PM)Bucky Ball Wrote: We were arguing about whether California has shorter days than Minnesota.

Los Angeles (CA) ↑ 6:54 am ↓ 4:47 pm  

Minneapolis (MN) ↑ 7:48 am ↓ 4:34 pm  

From:    https://www.timeanddate.com/astronomy/usa

Melbourne (Australia)  ↑ 5:54 am ↓ 8:42 pm

All times local.
I'm a creationist;   I believe that man created God.
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  • Bucky Ball

The Elegant Nature of Science 2.0

Around 700 million years ago, the world is thought to have experienced its most severe ice age -- a period evocatively described by scientists as Snowball Earth.

It threatened the survival of much of the planet's primitive living things, like oxygen-dependent marine life -- including the earliest animals, such as simple sponges.

But new geological evidence uncovered by scientists at McGill University in Montreal has found that glacial meltwater provided a crucial lifeline at the time to microscopic organisms known as eukaryotes.

"The evidence suggests that although much of the oceans during the deep freeze would have been uninhabitable due to a lack of oxygen, in areas where the grounded ice sheet begins to float there was a critical supply of oxygenated meltwater," said McGill University sedimentologist Maxwell Lechte in a press statement.

Previously, scientists thought that oxygen-dependent life may have been restricted to meltwater puddles on the surface of the ice, but the new study published Monday in the journal Proceedings of the National Academy of Sciences provides evidence of "oxygen oases" below the ice where the glacier meets the sea. These would have allowed primitive life forms to wait out the ice age.
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The Elegant Nature of Science 2.0
Dust from an australian meteorite was analysed. Age: 5-7bio years.  7bio years would put it at almost TWICE the age of the solar system, and half the age of the unverse.  
R.I.P. Hannes
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The Elegant Nature of Science 2.0
So the present news obsessions have prevented attention to this.
The largest explosion in the universe known, (I suppose not counting the big bang).


Science News : (I don't think it's behind a pay wall, but in case)
"Say hello to the Krakatoa of black hole eruptions.

Hundreds of millions of years ago, a supermassive black hole in a far-off galaxy blew out gas into intergalactic space. The flare-up was about five times as powerful as the previous record holder, researchers report in the March 1 Astrophysical Journal. The energy from this one explosion was roughly 100 billion times as much as the sun is expected to emit in its entire lifetime. This makes it not only the most energetic known eruption from a supermassive black hole — it’s also the most powerful eruption of any kind in the universe.

Eruptions from enormous black holes aren’t uncommon. The explosions are powered by the release of pent-up energy in encircling disks of hot gas. But the team notes that this newfound eruption is thousands of times more powerful than most.

The source of the eruption was a beast of a galaxy at the center of the Ophiuchus cluster, a gathering of galaxies nearly 400 million light-years from Earth. In 2016, researchers noticed the edge of a cavity in the cluster’s hot, X-ray emitting gas, about 400,000 light-years from the central galaxy. The excavated region appears to be over a million light-years across.

To suss out the origin of the cavity, astrophysicist Simona Giacintucci at the U.S. Naval Research Laboratory in Washington, D.C., and colleagues pored through data from several radio telescopes. The scientists found that the cavity glowed with radio waves, likely from electrons accelerated to near the speed of light. The team suggests that the electrons got revved up by a powerful outburst at least 240 million years prior from a supermassive black hole at the heart of the cluster’s central galaxy.

S. Giacintucci et al. Discovery of a giant radio fossil in the Ophiuchus galaxy cluster. Astrophysical Journal. Vol. 891, March 1, 2020. doi: 10.3847/1538-4357/ab6a9d.

N. Werner et al. Deep Chandra study of the truncated cool core of the Ophiuchus cluster. Monthly Notices of the Royal Astronomical Society. Vol. 460, August 11, 2016. doi: 10.1093/mnras/stw1171.

Christopher Crockett is the interim astronomy writer and was the astronomy writer at Science News from 2014 to 2017. He has a Ph.D. in astronomy from the University of California, Los Angeles."
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The Elegant Nature of Science 2.0
This article includes some beautiful pictures of Mars.
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The Elegant Nature of Science 2.0
(10-04-2019, 06:43 PM)Bucky Ball Wrote: Friendly black holes.

the hole thing presumes there is a "through" to be had, but hey we are dreaming  Girl_yes2

The Elegant Nature of Science 2.0
Old article but an idea I have been revisiting.

The advantages of Venus cloud cities are many.
Radiation protection
Those are huge considering the harshness of everywhere else we could travel to.

The biggest shortfall is water. There is little to be made from components.

More dreaming Thinking

The Elegant Nature of Science 2.0
Cryo-electron microscopy .. wanna see some atoms ?
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The Elegant Nature of Science 2.0

For the first time, astronomers were able to watch the entire process of a neutron star absorbing material and eventually unleashing a powerful blast of x-rays.

Scientists have long wondered why neutron stars create these violent outbursts. This time around, it took 15 scientists from five institutes using seven observatories in order to gather the complete data set, according to a Monash University press release. And with that data in hand, the scientists hope to finally make sense of these massive x-ray blasts.

After 12 days of absorbing matter from its accretion disk — matter swirling around in a ring or spiral — the neutron star blasted out a jet of x-rays several thousand times brighter than our Sun. Before this study, scientists thought the pre-outburst accretion phase only lasted two or three days at most.

The explosion lasted weeks, according to the research, which was accepted for publication in the journal Monthly Notices of the Royal Astronomical Society. During that brief window, it gave off as much energy as our Sun does in a decade.
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  • GenesisNemesis

The Elegant Nature of Science 2.0
From a Scientific American t-shirt: "Question & Research & Hypothesize & Experiment & Observe & Conclude & Communicate.
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