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amazing science/nature images

Posted: Mon Mar 29, 2021 12:19 pm
by DukeofNuke

I had to read "The Raven" aloud to the class in seventh grade.
When I got to the line 'Quoth the Raven ..." I said it like a parrot;
nev-ER-more.

It got a laugh.


amazing science/nature images

Posted: Tue Mar 30, 2021 3:17 pm
by DEyncourt

ISS transiting the Moon:

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You must scroll downward to see the article about this.

Here is a video that the astrophotographer took during the time he had set up his cameras to capture this event.


amazing science/nature images

Posted: Tue Mar 30, 2021 9:12 pm
by DukeofNuke
DEyncourt wrote: Fri Mar 26, 2021 5:32 pm

Where does zodiacal light come from?

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You must have VERY DARK skies to see this with the naked eye although it is easier to get such images via photography.

The Bad Astronomer explains how Juno--the spacecraft now in a polar orbit around Jupiter--may have gotten proof of how much of the dust causing zodiacal light MAY have come from Mars.

On its way to Jupiter Juno had to take a circuitous route to get there, in part getting a gravity assist from the Earth and thus spending some time between Earth and the asteroid belt:

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While Juno lacks any sort of dust detector--that being not her main mission to Jupiter--an analysis of the dust that Juno intercepted during that route at least shows how there was little dust in the asteroid belt (previously an argument was made that asteroids and other interplanetary debris was the source of the dust causing zodiacal light) BUT there was a lot of dust when she passed through Mars' orbit.

While the Bad Astronomer pointed out the lack of any mechanism for ANY Martian dust to escape from Mars, I forget where I read this but there were articles on how Mars had lost much of its atmosphere in part due to lacking a strong-enough magnetosphere. In effect globs of the Martian atmosphere got stripped from Mars by action of the solar wind. Considering how practically every Martian year the planet gets swamped with large dust storms--sometimes covering nearly all of the planet aside from the polar ice caps--couldn't the solar wind also steal large portions of Martian dust as well? Now lacking any mechanism to get out of Mars' orbit around the Sun, that dust would form a relatively concentrated belt along Mars' orbit.

THIS GUY's PHD thesis was on zodiacal light and interplanetary dust
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amazing science/nature images

Posted: Wed Mar 31, 2021 5:30 am
by ukimalefu

amazing science/nature images

Posted: Wed Mar 31, 2021 7:00 am
by ukimalefu

Don't forget about Curiosity, still on Mars taking cool pics

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https://gizmodo.com/nasa-s-other-mars-r ... 1846583851


amazing science/nature images

Posted: Wed Mar 31, 2021 9:54 am
by maurvir

I still can't past the fact that Mars is becoming "familiar".


amazing science/nature images

Posted: Wed Mar 31, 2021 2:50 pm
by DEyncourt
DukeofNuke wrote: Tue Mar 30, 2021 9:12 pm

[snip]

THIS GUY's PHD thesis was on zodiacal light and interplanetary dust
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May's thesis was handed in 2007. Unfortunately he was wrong partly because he was using the idea that asteroids were the source of the debris causing zodical light. I'm certain that in light of the INDIRECT findings from Juno that May would concede this problem which would require him to to explain why Juno got near to no dust contacts while the probe spent time through the asteroid belt.


amazing science/nature images

Posted: Thu Apr 01, 2021 1:02 am
by DEyncourt

"Rocket Launch as Seen from the Space Station".

This supply mission launch was from the Baikonur Cosmodrome in November 2018.


amazing science/nature images

Posted: Thu Apr 01, 2021 9:07 am
by ukimalefu

https://i.imgur.com/og1IbTm.mp4

video doesn't show when everyone on that boat fell down, hopefully just hitting the floor in their soiled pants


amazing science/nature images

Posted: Thu Apr 01, 2021 10:38 am
by ukimalefu

amazing science/nature images

Posted: Thu Apr 01, 2021 10:38 am
by ukimalefu

amazing science/nature images

Posted: Fri Apr 02, 2021 10:00 am
by ukimalefu

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uncouth individual the cameras are here for me, GTFO


amazing science/nature images

Posted: Fri Apr 02, 2021 10:56 am
by juice

That's awesome


amazing science/nature images

Posted: Fri Apr 02, 2021 11:38 am
by ukimalefu

amazing science/nature images

Posted: Sat Apr 03, 2021 1:45 pm
by ukimalefu

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July 7, 2015 – The Aeolis Mensae region of Mars, captured by the Mars Express probe.

https://www.flickr.com/photos/europeans ... otostream/

Call it pareidolia, or call me crazy, but I see city ruins

or

I want to believe

-

Nazca lines
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archaeological ruins in the Judean Desert, as seen from Masada fortress
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-

I know, I know. I didn't say I believe, I said I want to.


amazing science/nature images

Posted: Mon Apr 05, 2021 5:23 am
by ukimalefu

Set down and ready to go

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Now that Ingenuity is separated from Perseverance, it will need to power and heat itself. Ingenuity will draw power from the sun using its onboard solar panels, but its heater will have the tough job of keeping the helicopter warm through the freezing cold nights on Mars, where temperatures can go as low as negative 130 degrees Fahrenheit, according to Bob Balaram, Ingenuity’s chief engineer.

Presuming Ingenuity survives the harsh conditions, the helicopter will aim to take the first powered flight on another planet, which is currently set for “no earlier” than April 11th. NASA outlined the helicopter’s flight zone, which NASA outlined on March 23rd. The plan is for Ingenuity to attempt as many as five test flights within 30 days before settling down on the surface of Mars for eternity.

for eternity... that's quite a long time


amazing science/nature images

Posted: Mon Apr 05, 2021 2:35 pm
by maurvir

I'm sure that when we settle Mars, someone will drop by and steal it.


amazing science/nature images

Posted: Tue Apr 06, 2021 8:41 am
by ukimalefu

amazing science/nature images

Posted: Tue Apr 06, 2021 9:23 am
by ukimalefu

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amazing science/nature images

Posted: Wed Apr 07, 2021 7:27 am
by ukimalefu

amazing science/nature images

Posted: Wed Apr 07, 2021 8:04 am
by DukeofNuke

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amazing science/nature images

Posted: Fri Apr 09, 2021 11:13 am
by ukimalefu

Proud parent

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Open the image in a new tab and zoom in.

I love looking at every detail

Such a high resolution, super clear, sharp picture... made by a robot in another planet.


amazing science/nature images

Posted: Sun Apr 11, 2021 7:45 am
by ukimalefu

amazing science/nature images

Posted: Sun Apr 11, 2021 9:38 am
by ukimalefu

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We use #Tech4Wildlife for our project developing automated methods of individual ID for brown bears and other wildlife. We use a combination of #cameratrapping, visual observations, and #machinelearning with collaborative partnerships to make this happen.

https://twitter.com/bearid_project


amazing science/nature images

Posted: Sun Apr 11, 2021 11:24 am
by macnuke

Beats tagging and putting transmitters on them :up:


amazing science/nature images

Posted: Sun Apr 11, 2021 11:37 am
by ukimalefu
macnuke wrote: Sun Apr 11, 2021 11:24 am

Beats tagging and putting transmitters on them :up:

that's a nice way to think about it

all I could think of was: Bearminator

I'm a nerd


amazing science/nature images

Posted: Mon Apr 12, 2021 6:31 am
by ukimalefu

amazing science/nature images

Posted: Mon Apr 12, 2021 7:52 am
by ukimalefu

amazing science/nature images

Posted: Tue Apr 13, 2021 5:29 pm
by DEyncourt

Video tweets: super-bright meteor captured by home videos off the Atlantic coast of Florida. There were reports of booms from folks in the Bahamas too.

This is how bright that was: an image from a geostationary satellite with a red circle around the meteor flash:

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amazing science/nature images

Posted: Tue Apr 13, 2021 5:34 pm
by DEyncourt

Video tweets: woman walking on Boston beach sank up to her knees in mud, had to be rescued by firefighters.


amazing science/nature images

Posted: Wed Apr 14, 2021 10:36 am
by TOS

a human cell

image created by combinin radiography, nuclear magnetic resonance and cryoelectronic microscopy

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amazing science/nature images

Posted: Wed Apr 14, 2021 10:43 am
by maurvir

Every time life starts to feel mundane, you get a reminder that life itself is almost miraculous. When you consider how all the pieces of that cell work independently, never mind in conjunction with the other parts, it's astonishing.


amazing science/nature images

Posted: Wed Apr 14, 2021 11:15 am
by Metacell

We're all just cells in the membrane wall.


amazing science/nature images

Posted: Wed Apr 14, 2021 11:46 am
by Ribtor

I agree, "almost miraculous". It's fascinating and astonishing and beautiful and the most amazing structure on the planet but definitely falls short of miraculous.

It's a patchwork of molecular structure and chemistry that only works because it survives just long enough to be functional. It's prone to failure from the moment it arises and wears out and fails even under optimal conditions. It is utterly dependent on an outside environment to keep it going. One critical component in particular, the mitochondria, had to be imported into the structure just to keep it running. As amazing as it is, I think it is the opposite of miraculous.

Miraculous in this context would be life as a single functional material not built of interdependent systems which are prone, even doomed, to failure . A Golem from Hebrew lore is an example that comes close to miraculous life.


amazing science/nature images

Posted: Thu Apr 15, 2021 1:51 pm
by Metacell

It's miraculous that it even works at all, the delicate razor walk between the perfect embodiment of the universe sensing itself and a dead heap of random molecules.


amazing science/nature images

Posted: Thu Apr 15, 2021 5:43 pm
by DEyncourt
Metacell wrote: Thu Apr 15, 2021 1:51 pm

It's miraculous that it even works at all, the delicate razor walk between the perfect embodiment of the universe sensing itself and a dead heap of random molecules.

Well, this is part of a problem with humans. We have a tendency to (at least) try to take apart things, so when faced with horribly complex systems like a modern cell we tend to throw up our hands and proclaim: "This MUST be God's work!"

You know the saying from "Jurrasic Park": "Nature will find a way"? Well, that IS true, but there should be an addendum: "...by trying out EVERY possibility." Nature can be very sloppy by sending out sometimes up to trillions of alternatives. Many of them will work, but a huge percentage will fail. Some of these failures can happen before birth/hatching and the embryo will fail before achieving that event (we humans sometimes call this a miscarriage). Sometimes a particular variant can survive for many generations but will fail. Before the advent of human culture we in nature lacked any means to record why some variant had failed. Yes, there is the fossil record but please recognize that despite the millions of examples that we have in museums, that record is VERY fragmentary because very little has become fossils. And while we can find traces of species that had existed but are no longer existant, we can only know only that they had existed but we might never ever understand the reasons why they ceased to exist. At best we might come up with even educated guesses, but these are still "only" guesses.


amazing science/nature images

Posted: Fri Apr 16, 2021 12:03 am
by Metacell

Trust me, by "It's miraculous that it even works at all," I mean that it exhibits a complete lack of intelligent design. I know all about our shoddy fish eyes.


amazing science/nature images

Posted: Fri Apr 16, 2021 5:35 am
by ukimalefu

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amazing science/nature images

Posted: Fri Apr 16, 2021 10:03 am
by ukimalefu

amazing science/nature images

Posted: Sun Apr 18, 2021 6:35 am
by ukimalefu

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Rainbow Fluorite From China