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AGelbert

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Agelbert NOTE: Enjoy the real color photos of Mars, including water vapor clouds and even the atmosphere in this video. ✨👍

What did India’s Mars Orbiter Mission see over Mars? MOM Mangalyaan ISRO
517,998 views


Astrum
Published on Aug 24, 2019
The ISRO successfully sent the Mangalyaan probe to Mars on the first time of trying, but what has it done and seen since its been there?
https://brilliant.org/astrum/

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Image Credits: NASA/ISRO

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Category Education

Agelbert NOTE: Check out that tall thing on Mars moon Phobos . 🧐

They Discovered Something on Mars and Phobos that Cannot Be Explained ..11,924 views


The 5th Kind
Premiered 19 hours ago
The now dubbed “Phobos monolith” is a large object on the surface of Mars's moon “Phobos”. The giant structure stands 90 meters tall. Only 3 meters less than that of the Statue of Liberty Monument in New York. 

First discovered by “Efrain Palermo” who noticed the distinct shadow of the anomaly while analysing images taken from the “Mars Global Surveyor orbiter” lanched in November 1996. This peculiar and solitary large rock was also confirmed by “Lan Fleming”, an imaging sub-contractor at NASA Johnson Space Center. Also Noting the possibility that the monolith is artificial in nature.

Along with the mysterious Monolith photographed on the Martian moon “Phobos”.. A similar looking structure can also be seen upon the surface of Mars...

Featuring David Childress, Billy Carson, Mike Bara and Michael Salla.
Category People & Blogs

Rob not the poor, because he is poor: neither oppress the afflicted in the gate:
For the Lord will plead their cause, and spoil the soul of those that spoiled them. Pr. 22:22-23

AGelbert

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Environmental Rules Being Rolled Back in the US 😠
« Reply #121 on: September 16, 2019, 07:53:46 pm »
Environmental Rules Being Rolled Back in the US

58 views•Published on Sep 16, 2019


The Science Revolution
339 subscribers

In the Science Revolution, Thom Hartmann covers the Trump administration trying to save us from the tyranny of efficient lightbulbs, with environmental rules being rolled back.

Also, author, Tim Wise joins Thom to talk about big AG and its effects on climate change. In our GBU segment,  the  Good is Ireland and what they're doing to help the climate and there is a very very ugly killer in the Mohave Desert, not found yet - we'll be talking about.

Plus, our new Geeky Science segment is inspired by Thom's indoor cat, Kedi, getting loose outdoors, and what he did.

Click the time to jump to a segment:
0:37 Energy Light Bulbs
3:15 Is Big Agriculture Destroying the Planet?
13:03 The Good, the Bad and the Very, Very Ugly
14:57 Geeky Science
16:08 Science Fact of the Week

0:37 ENERGY LIGHT BULBS
The Trump administration in the US continues to roll back environmental protections, this time on energy-efficient light bulbs. Is this going to help destroy civilization for profits?

3:15 IS BIG AGRICULTURE DESTROYING THE PLANET?
With special guest Tim A. Wise

Is big agriculture the biggest obstacle to solving climate change? Chemical intensive agriculture is kicking our planet and actually contributing to world hunger.

The deforestation in Brazil is contributing to CO2.

Why is the US federal government promoting the industrializing of land and pushing the same in other countries? Small scale farmers around the world are being pushed to increase in size and use chemicals produced in the US. Seed companies want farmers to not save seeds for the next year but buy fresh seed every year. There is nothing climate-smart or sustainable about that.

Timothy A. Wise joined Thom to explain the policies and what is going wrong.

13:03 THE GOOD, THE BAD & THE VERY, VERY UGLY
The Good - Ireland Planting Trees
The Bad - Broadcast News
The Ugly - The Killer of 42 Wild Burros

14:47 GEEKY SCIENCE
To crows chase cats? They do at the Hartmann residence. And what of bird sounds and squirrels?

16:08 SCIENCE FACT OF THE WEEK
According to scientists at NOAA's National Centers for Environmental Information - July 2019 was the hottest month on record for the planet. The average global temperature in July was 1.71 degrees F above the 20th-century average, making it the hottest July in the 140-year record. The previous hottest month on record was July 2016. Nine of the 10 hottest Julys have occurred since 2005 -- with the last five years ranking as the five hottest. Not surprising - There is also record-low sea ice. Average Arctic sea ice set a record low for July, running 19.8% below average -- surpassing the previous historic low of July 2012.

#MoreScienceRevolution
Category Education
Rob not the poor, because he is poor: neither oppress the afflicted in the gate:
For the Lord will plead their cause, and spoil the soul of those that spoiled them. Pr. 22:22-23

AGelbert

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🕵️ The Bizarre Behavior of Rotating Bodies , Explained 🧐
3,535,089 views • Sep 19, 2019


Veritasium
6.47M subscribers
Spinning objects have strange instabilities known as The Dzhanibekov Effect or Tennis Racket Theorem - this video offers an intuitive explanation.
Part of this video was sponsored by LastPass, click here to find out more: https://ve42.co/LP

References:
Prof. Terry Tao's Math Overflow Explanation: https://ve42.co/Tao

The Twisting Tennis Racket
Ashbaugh, M.S., Chicone, C.C. & Cushman, R.H. J Dyn Diff Equat (1991) 3: 67. https://doi.org/10.1007/BF01049489

Janibekov’s effect and the laws of mechanics
Petrov, A.G. & Volodin, S.E. Dokl. Phys. (2013) 58: 349. https://doi.org/10.1134/S102833581308...

Tumbling Asteroids
Prave et al. https://doi.org/10.1016/j.icarus.2004...

The Exact Computation of the Free Rigid Body Motion and Its Use in Splitting Methods
SIAM J. Sci. Comput., 30(4), 2084–2112
E. Celledoni, F. Fassò, N. Säfström, and A. Zanna
https://doi.org/10.1137/070704393

Animations by Iván Tello and Isaac Frame

Special thanks to people who discussed this video with me:
Astronaut Don Pettit
Henry Reich of MinutePhysics
Grant Sanderson of 3blue1brown
Vert Dider (Russian YouTube channel)


Below is a further discussion by Henry Reich that I think helps summarize why axes 1 and 3 are generally stable while axis 2 is not:

In general, you might imagine that because the object can rotate in a bunch of different directions, the components of energy and momentum could be free to change while keeping the total momentum constant.


However, in the case of axis 1, the kinetic energy is the highest possible for a given angular momentum, and in the case of axis 3, the kinetic energy is the lowest possible for a given angular momentum (which can be easily shown from conservation of energy and momentum equations, and is also fairly intuitive from the fact that kinetic energy is proportional to velocity squared, while momentum is proportional to velocity - so in the case of axis 1, the smaller masses will have to be spinning faster for a given momentum, and will thus have more energy, and vice versa for axis 3 where all the masses are spinning: the energy will be lowest). In fact, this is a strict inequality - if the energy is highest possible, there are no other possible combinations of momenta other than L2=L3=0, and vice versa for if the energy is the lowest possible.

Because of this, in the case of axis 1 the energy is so high that there simply aren't any other possible combinations of angular momentum components L1, L2 and L3 - the object would have to lose energy in order to spin differently. And in the case of axis 3, the energy is so low that there likewise is no way for the object to be rotating other than purely around axis 3 - it would have to gain energy. However, there's no such constraint for axis 2, since the energy is somewhere in between the min and max possible. This, together with the centrifugal effects, means that the components of momentum DO change.

Category Education
Rob not the poor, because he is poor: neither oppress the afflicted in the gate:
For the Lord will plead their cause, and spoil the soul of those that spoiled them. Pr. 22:22-23

AGelbert

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If You Think Jupiter Orbits the Sun, You're Mistaken
« Reply #123 on: November 01, 2019, 01:33:09 pm »
An artist's depiction of the solar system. ANTAR DAYAL/GETTY IMAGES

If You Think Jupiter Orbits the Sun, You're Mistaken     
BY CHRISTOPHER HASSIOTIS AUG 9, 2016


If we picture the solar system, we often picture our dominant star at the center of things, static and immobile as planets orbit circles around it. That picture makes things simple to understand, but technically it's inaccurate. Take our largest planet Jupiter, for instance. It doesn't orbit the sun's center — it orbits a spot in empty space between it and the sun called the barycenter. This is because the sun doesn't just exert gravity on Jupiter — Jupiter's so big that its own pull affects how the sun moves, too.

The sun is about 1,000 times more massive than Jupiter, and these two bodies affect one another proportionally according to distance and mass, so the amount Jupiter's gravity pulls on the sun is one-thousandth the amount the sun's gravity pulls on Jupiter. And Jupiter's orbit takes 11.8 Earth years to complete, and the sun travels around the barycenter takes the same amount of time.

The Sol-Jupiter barycenter sits 1.07 times the radius of the sun from the sun's center, or 7 percent the radius of the sun from the surface. The sun also orbits this spot; if you were to look at the planetary plane from above, you'd notice a slight wobble as the sun moves around the Milky Way, as this hypnotic NASA animation helps explain.

https://science.howstuffworks.com/jupiter-orbit-sun-barycenter.htm

Rob not the poor, because he is poor: neither oppress the afflicted in the gate:
For the Lord will plead their cause, and spoil the soul of those that spoiled them. Pr. 22:22-23

AGelbert

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Water Vapor Plumes on Europa
110,186 views•Nov 18, 2019


NASA Goddard
615K subscribers

What makes Jupiter's moon Europa so alluring is the possibility that it may possess all the ingredients necessary for life. Scientists have evidence that one of these ingredients, liquid water, is present under the icy surface and may sometimes erupt into space in huge geysers. However, no one has been able to confirm the presence of water in these plumes by direct measurement of the water molecule itself. Now, an international research team led out of NASA's Goddard Space Flight Center in Greenbelt, Maryland has detected the water vapor for the first time above Europa's surface. The team measured the vapor by peering at Europa through one of the world's biggest telescopes in Hawaii. Confirming that water vapor is present above Europa helps scientists better understand the inner workings of the moon.

Science Paper: https://www.nature.com/articles/s4155...

Video Credits:
Produced and Edited by: David Ladd (USRA/NASA's Goddard Space Flight Center)
Animations by: Michael Lentz (USRA/NASA's Conceptual Image Lab), and NASA's Jet Propulsion Laboratory
Lead Scientist: Lucas Paganini

Music provided by Killer Tracks: "Cross the Line" - Wally Gagel & Xandy Barry

Keck Observatory visuals provided by: Sean Goebel/W. M. Keck Observatory

This video is public domain and along with other supporting visualizations can be downloaded from the Scientific Visualization Studio at: http://svs.gsfc.nasa.gov/13163

Credit: NASA's Goddard Space Flight Center/David Ladd

If you liked this video, subscribe to the NASA Goddard YouTube channel: http://www.youtube.com/NASAExplorer

Follow NASA’s Goddard Space Flight Center
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Category Science & Technology
Rob not the poor, because he is poor: neither oppress the afflicted in the gate:
For the Lord will plead their cause, and spoil the soul of those that spoiled them. Pr. 22:22-23

AGelbert

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Dark Matter ✨
« Reply #125 on: January 15, 2020, 11:40:01 pm »
Dark Matter ✨
358,886 views•Aug 18, 2016


Isaac Arthur
450K subscribers

A look at Dark Matter, what it is, what it isn't, and what it might be used for.

Visit our Website:
www.IsaacArthur.net

Support the Channel on Patreon:
https://www.patreon.com/IsaacArthur

Listen or Download the audio of this episode from Soundcloud:
https://soundcloud.com/isaac-arthur-1...

Cover Art by Jakub Grygier:
https://www.artstation.com/artist/jak...

Dark Matter as Primordial Black Holes discusses:
http://www.space.com/33122-dark-matte...
Caption author (Portuguese)
Uendel Quintela
Category
Science & Technology
Rob not the poor, because he is poor: neither oppress the afflicted in the gate:
For the Lord will plead their cause, and spoil the soul of those that spoiled them. Pr. 22:22-23

AGelbert

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Moon: Industrial Complex
51,092 views•Jan 16, 2020

;)
Isaac Arthur
450K subscribers

Visit our sponsor, Brilliant: https://brilliant.org/IsaacArthur/
The Moon is gateway to space, and in the future it might serve as an industrial and mining complex fueling vast production of spaceships, rocket fuel, satellites, space stations, and colonial habitats.

Visit our Website: http://www.isaacarthur.net
Support us on Patreon: https://www.patreon.com/IsaacArthur
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Listen or Download the audio of this episode from Soundcloud: Episode's Audio-only version: https://soundcloud.com/isaac-arthur-1...
Episode's Narration-only version: https://soundcloud.com/isaac-arthur-1...

Credits:
Moon: Industrial Complex
Episode 221; Jan 16, 2020

Writers:
Isaac Arthur
Keith Blockus

Editors:
Jerry Guern
S. Kopperud
S. Graham

Produced & Narrated by
Isaac Arthur

Cover Art:
Jakub Grygier https://www.artstation.com/jakub_grygier

Graphics:
Andy Nelson
Jarred Eagley
Jeremy Jozwik https://www.artstation.com/zeuxis_of_...
Justin Dixon
Ken York https://www.facebook.com/YDVisual/
Kristijan Tavcar https://www.miragedereve.com
Sergio Botero https://www.artstation.com/sboterod?f...
Space Resources CGI
Tytus Grabowski
Udo Schroeter

Music Courtesy of Epidemic Sound http://epidemicsound.com/creator
Category Science & Technology
Rob not the poor, because he is poor: neither oppress the afflicted in the gate:
For the Lord will plead their cause, and spoil the soul of those that spoiled them. Pr. 22:22-23

 

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