So, I wouldn't lose any sleep over it, yet.

Wisecrack

Thanks to Lionsgate for sponsoring this video! Get tickets to see Moonfall today at https://tickets.moonfall.movie/ 
Moon Fall Down? 

The new movie Moonfall imagines what would happen if the moon got knocked off its axis and sent towards earth. So is this actually possible? And could we survive? Let's find out in this Science is Hard: What if the Moon Fell Down to Earth? 

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00:00 - Intro
01:12 - Moon Fact
03:58 - A World With No Moon
05:50 - But How Likely Is It
06:54 - Conclusion

Written and Hosted by Michael Burns
Research by Michael Howard
Directed by Michael Luxemburg
Original Illustrations by Sean Godsey
Edited by Jackson Maher
Produced by Evan Yee & Olivia Redden

Music courtesy of Epidemic Sound

#Moonfall #lionsgate #wisecrack #sponsored

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What if the Moon Fell Down to Earth? | Science Is Hard

Rare Earth

Despite being extremely tired of filming, while waiting for the flights home we decided to add one Vietnam video to our SE Asia journey. This is on heroism, and the women who died for Vietnam.

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The Warrior Women of Vietnam

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What Makes ALL Your Electronics Work - Firmware Explained

Flux

Kabarza is sharing his personal journey to become a professional web designer and webflow developer.

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Newton’s law of gravitation  so it may be that G m M over r squared does describe

Newton’s law of gravitation . so it may be that G m M over r squared does describe

minutephysics

Thanks to the Heising Simons Foundation (https://www.hsfoundation.org/) for their support of this video, and of short range gravity research.

This video is about how little we know about the behavior of gravity at short length and distance scales, what the constraints are on the inverse square law/Newton's law of universal gravitation, at the human and microscopic and atomic scales. Only on solar system scales or larger do we have good constraints on Newton's law of gravitation.

REFERENCES

Review of short-range gravity experiments in the LHC era
https://arxiv.org/abs/1408.3588v2

Zeptonewton force sensing with nanospheres in an optical lattice
https://arxiv.org/abs/1603.02122

Large extra dimensions
https://en.wikipedia.org/wiki/Large_extra_dimension

Search for Screened Interactions Associated with Dark Energy Below the 100 μm Length Scale
https://arxiv.org/abs/1604.04908

Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale
https://arxiv.org/abs/hep-ph/0611184v1

Photon Mass Experiment
http://dx.doi.org/10.1119/1.13149

Torsion balance experiments: A low-energy frontier of particle physics
E.G. Adelberger, J.H. Gundlach, B.R. Heckel, S. Hoedl, S. Schlamminger
doi:10.1016/j.ppnp.2008.08.002

TESTS OF THE GRAVITATIONAL INVERSE-SQUARE LAW
E.G. Adelberger, B.R. Heckel, and A.E. Nelson
Annu. Rev. Nucl. Part. Sci. 2003. 53:77–121 doi: 10.1146/annurev.nucl.53.041002.110503

Physical Review A, Vol 33, No 1: Improved result for the accuracy of Coulomb's law: A review of the Williams, Faller, and Hill experiment. 
Lewis P. Fulcher.

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Our Ignorance About Gravity

stare up at a bright, full moon, and think to yourself,

seems to be playing right into my biggest fears

where the whole damn moon gets knocked off its orbit

and literally starts falling towards Earth.

Along the way, it causes a grab-bag of damage:

deaths, tidal waves, gravitational shifts, and the like.

Now, I'm not here to spoil the movie for you,

because that would be what scientists call,

that the moon could ever be thrown off its axis

like a bowling ball thrown by a drunk and vengeful God?

Science is Hard: Is real-life Moonfall possible?

To begin with, let's get some basic moon facts straight.

The moon is in an elliptical orbit around the Earth.

It's distance from Earth ranges from 362,600

to 405,400 kilometers at any given point.

this could cause the moon's orbit to stretch out

as the force of the object slows it down.

it's actually because of cold hard science:

of the moon and Earth's respective orbits,

speed, and rotation, plus the gravitational pull

And if the moon gets knocked off its orbit,

the difference between the minimum and maximum distances

between the moon and Earth would increase,

Along the way, it would also increase the difference

and create way bigger and scarier tidal waves.

Good for surfers, bad for the rest of us.

its orbit would get more and more elliptical,

The friction created would slow it down even further,

and the moon would eventually crash into our planet

The Roche Limit holds true for any satellite,

i.e. an object orbiting something like a planet.

where the gravity holding a satellite together

is weaker than the tidal forces trying to pull it apart.

Now, the moon was formed around 4 1/2 billion years ago

When this happened, they melted into each other

which is kinda romantic when you think about it.

And the moon was a piece that spun off from this new mass,

thus furthering this intergalactic fairy tale.

And when a satellite has the same make-up as a primary body,

i.e. when the moon baby is descended from its parent planet,

the Roche Limit is about 2 1/2 times the radius

This means that if the moon's orbit reached 11,470 miles

tidal forces would tear that little rascal apart,

But in this case, not all the pieces of our blasted-up moon

as some pieces will be pulled in by Earth's gravity.

If they then survive the fall through our atmosphere,

they'll absolutely wreck a few major cities in the process.

Test your pronunciation!

“over”