amazing science/nature images

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ukimalefu
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Image

Europa, Jupiter, PIA23872: Crisscrossing Bands, taken by NASA’s Galileo spacecraft on September 26, 1998 [produced by Mario Valenti at the SETI Institute in Mountain View, CA. NASA/JPL-Caltech/SETI Institute]

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Perseverance Mars Rover Landing- Inside Story

It's an old video but it explains a lot of things.

Also, don't forget:

As of May 2021, there have been six successful robotically operated Mars rovers, the first five managed by the American NASA Jet Propulsion Laboratory: Sojourner (1997), Opportunity (2004), Spirit (2004), Curiosity (2012), and Perseverance (2021). The sixth is Zhurong (2021), managed by the China National Space Administration.

https://en.wikipedia.org/wiki/Mars_rover

There's also one helicopter that flies on Mars!

https://en.wikipedia.org/wiki/Ingenuity_(helicopter)

AND there are more missions on the way

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Image

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Image

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Post by juice »

that picture delivers on the thread title

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Post by TOS »

everybody knows the canadian side of the falls are way better

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Post by DukeofNuke »

Why do the images in that article look like they were made with one of those Hipster toy cameras?
I'm pretty sure they had actual Nikons in '69 ...

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Post by DEyncourt »

"A Single Laser Fired Through a Keyhole Can Expose Everything Inside a Room"

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This technique works best upon moving objects inside the target room.

That keyhole in the title is specifically very old models in which there is a clear hole through the door and not the usual modern door locks which do not provide this. On the other hand, this technique could work on any door with a peephole in it.

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Post by ukimalefu »

something something, light/particles/waves

Imma duct tape my keyholes

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Image

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Sweet batteries

Simply by adding sugar, researchers from the Monash Energy Institute have created a longer-lasting, lighter, more sustainable rival to the lithium-ion batteries that are essential for aviation, electric vehicles and submarines.

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Among other weather phenomena this site shows you current wind conditions around the world.

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Post by DEyncourt »

Over last weekend (9/7) Alcapulco got hit by a 7.0 earthquake. Unlike a number of other reports of mysterious flashes that happened during quakes there are recordings showing them.

While a USGS geologist is reported at the link explaining that this form of the phenomenon is most likely due to swinging electrical wires short-circuiting with each other or with grounding points (such as a tree), I do have a question: why were ALL of these bright blue flashes seemingly "near" the horizon? The video is obviously from some location well within the city, so why weren't there any such flashes that happened much closer to that camera?

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Ancient spider caring for her offspring is trapped in 99 million-year-old amber

I have a bad feeling about this...

I mean, I've seen Arachnophobia and Jurassic Park

:paranoid:

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Image

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Post by sean »

ukimalefu wrote: Wed Sep 15, 2021 8:59 am

I have a bad feeling about this...

I mean, I've seen Arachnophobia and Jurassic Park

:paranoid:

Arachnic Park? Jurachnid Park? human waste... Someone get me Mr Speilberg on the phone!

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Post by ukimalefu »

sean wrote: Wed Sep 15, 2021 2:55 pm
ukimalefu wrote: Wed Sep 15, 2021 8:59 am

I have a bad feeling about this...

I mean, I've seen Arachnophobia and Jurassic Park

:paranoid:

Arachnic Park? Jurachnid Park? human waste... Someone get me Mr Speilberg on the phone!

Wait, spider + dinosaur

Image

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The big fellow is doing his job; keeping us safe.

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Post by Pithecanthropus »

ukimalefu wrote: Wed Sep 15, 2021 3:40 pm
sean wrote: Wed Sep 15, 2021 2:55 pm
ukimalefu wrote: Wed Sep 15, 2021 8:59 am

I have a bad feeling about this...

I mean, I've seen Arachnophobia and Jurassic Park

:paranoid:

Arachnic Park? Jurachnid Park? human waste... Someone get me Mr Speilberg on the phone!

Wait, spider + dinosaur

Image

Putting that piece of costume on its tongue must really suck.

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Post by DEyncourt »

The Bad Astronomer on gravitational lensing to allow astronomers to watch a distant supernova explode four times

Image

The bottom arc is a combination of two images. Those arcs on the bottom and right have a difference of about 131 light-days, while the short arc on the upper left is about 21 light years more distant. Because we have detected the supernova in those three "closer" arcs in 2016, we can train scopes and cameras upon that short arc to catch the supernova AGAIN in about 2037 ± 2 years.

The galaxy which made those arcs is about 10 billion light years away.

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wait for it

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Swarm of bees kills penguins

name says it all, click at your own discretion

https://gizmodo.com/new-details-emerge- ... 1847716092

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Post by DEyncourt »

maurvir wrote: Tue Sep 21, 2021 9:00 am

Image

Ahem

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"Fossil footprints show humans in North America more than 21,000 years ago"

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Such footprints usually are barely discernable but show up more easily when the rock they are in is dampened. These have been long known but an effort was made to locate some more of these prints still underneath overlaying soil. These had overlaying seeds which were dated to about 21,000 years ago making these the oldest definitively dated human remains in North America.

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Post by TOS »

it's worth noting that the age of the footprints throws a significant monkey wrench into the current belief that the americas were unpopulated by humans until they crossed the land bridge between siberia and alaska ... at the time these prints were made, long before that land bridge existed, massive glaciers made such a journey impossible

so how did those people get here?

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Post by maurvir »

TOS wrote: Sat Sep 25, 2021 10:53 am

it's worth noting that the age of the footprints throws a significant monkey wrench into the current belief that the americas were unpopulated by humans until they crossed the land bridge between siberia and alaska ... at the time these prints were made, long before that land bridge existed, massive glaciers made such a journey impossible

so how did those people get here?

Image

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Post by DEyncourt »

The Bad Astronomer's better and fuller explanation of the Martian supervolcanoes.

The pic above is NOT a pair of those supervolcanoes. It shows how later erosion had revealed that how this region once had been covered by MANY layers of volcanic ash laid down by those supervolcanoes which buried a lot of Mars with ash estimated to have been up to a kilometer deep. That process lasted over about a half-billion years which began about 3.7 billion years ago. This period is when Mars may have been transformed from a watery planet into the current dry one.

The pic above is about 750 meters across and shows remnants of that layering with the right one showing about 13 layers (there probably had been many more). The Bad Astronomer described these as mounds which may be only 100 meters high.

He illustrated the supervolcanoes of Arabia Terra with this image:

Image
with this caption:

Some of the supervolcano calderas identified in the Arabia Terra region on Mars (from lower left ot upper right): 1) Eden Patera; 75 km across, 2) Oxus Patera; 30 km across, 3) Ismenia Patera; 65 km across, and 4) Semeykin crater; 75 km across. The image is over 1,500 km wide. Credit: MarsTrek/NASA/JPL-Caltech

At the scale of THIS image, uki's pic would scarcely cover a pixel.

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Post by DEyncourt »

Photographer in Puerto Rico captured these images of a rare Gigantic Jet emerging out of an approaching lightning storm:

Image

The image is a link to the original article.

Here is a weather image showing the location of that storm:

Image

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Post by ukimalefu »

the gif has the word 'wizard' in it!

it's magic!

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Post by DEyncourt »

TOS wrote: Sat Sep 25, 2021 10:53 am

it's worth noting that the age of the footprints throws a significant monkey wrench into the current belief that the americas were unpopulated by humans until they crossed the land bridge between siberia and alaska ... at the time these prints were made, long before that land bridge existed, massive glaciers made such a journey impossible

so how did those people get here?

Mind you: that dating merely notes that those footprints are AT LEAST 21 K years old. They cannot date the footprints themselves as there is nothing (yet) which could be used by any current dating scheme so they MIGHT be much older.

While at times humans had been pushed "forward" due to population pressures, this long ago that seems an unlikely explanation. More probably the humans who created these footprints merely had that wanderlust which caused people to wander over the "next" set of hills.

This chart (courtesy of Wikipedia) shows the more recent periods of glaciation:

Image

Do note that the red chart is reversed from "normal" with the lower parts indicating more ice.

While the most recent peak was about 15 K years ago, it was preceded by about 50 K years of relatively high glaciation. Could not trans-Bering migrations of humans had occured during that long period?

Last edited by DEyncourt on Sat Sep 25, 2021 5:59 pm, edited 1 time in total.
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Post by Metacell »

TOS wrote: Sat Sep 25, 2021 10:53 am

it's worth noting that the age of the footprints throws a significant monkey wrench into the current belief that the americas were unpopulated by humans until they crossed the land bridge between siberia and alaska ... at the time these prints were made, long before that land bridge existed, massive glaciers made such a journey impossible

so how did those people get here?

The Australians reached South America as long ago as 40,000 years, so who knows...the sea levels may have been sufficiently low to allow easy rafting.

Remember, people, to forgive is divine. In other words, it ain't human.
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