Could Earth collide with Mars?
Ғылым және технология
Billions of years in the future, Earth and Mars could smash into one-another. How and why could this colossal cosmic collision occur? And what does an extremely erratic pendulum have to do with the fate of the Earth?
Video chapters
00:00 Hello, Mars!
00:28 Simulating the Solar System
01:36 Two pendula are better than one
03:10 Chaos in the Solar System
06:08 Keep an eye on Mars…
Sources and further reading
This video is based on the results of this 2009 paper, enticingly entitled ‘Existence of collisional trajectories of Mercury, Mars and Venus with the Earth’: www.nature.com/articles/natur...
This is a great pop-science summary: science.howstuffworks.com/ear...
And this fantastic nerdy-but-readable essay by one of the authors of that paper goes into a lot more detail: arxiv.org/abs/1209.5996
The reason these long-run simulations of the Solar System are actually useful (reassuring though it is to double-check the Earth isn’t going to be destroyed in the next few million years) is because they allow us to estimate the Earth’s orbit into the geological past, and understand our past climate. This more recent paper actually does the reverse: ‘we recover precise and accurate values for the [orbits] of the inner planets from 223- to 199-million-year-old tropical lake sediments’. Amazing! www.pnas.org/content/116/22/1...
Errata
At 1:17, I say that there are ‘thousands’ of minor bodies, like moons, comets and asteroids…but I was swiftly corrected on Twitter! NASA says there are between 1.1 million and 1.9 million asteroids larger than 1 km in the asteroid belt alone solarsystem.nasa.gov/asteroid... and this amazing animation by @scottmanley charts our discovery of asteroids since 1970…in 8K • Asteroid Discovery - 1...
At 3:58, the text that appears next to Mercury says ‘Radius: 4880 km’. This should of course say ‘Diameter: 4880 km’, or it would be nearly as large as Earth! I say ‘Mercury is 4880 km across’, which is correct…
Credits
Many, many thanks to Tran Nguyen for filming this, particularly the opening and closing shots which were shot in the dead of night, in freezing temperatures!
Many thanks also to Tom Fuller for the beautifully subtle sound design. He also made the music for Invisible London, which you might enjoy: • The weird, invisible w... Listen to some of his music at / editar
And finally, extra thanks to my dad for making the wooden stand for the CHAOS PENDULUM and posting it to us during Lockdown 2!
Orbital integration code from github.com/hannorein/rebound
Thumbnail image adapted from commons.wikimedia.org/wiki/Fi... by Maggie (Margaret) Thompson, NASA’s Blue Marble visibleearth.nasa.gov/images/... and Mars by ESA & MPS for OSIRIS Team MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA, CC BY-SA IGO 3.0 www.esa.int/ESA_Multimedia/Ima...
And finally…
Follow me on Twitter: / statto
Follow me on Instagram: / andrewjsteele
Like my page on Facebook: / drandrewsteele
Follow me on Mastodon: mas.to/@statto
Read my book, Ageless: ageless.link/
Пікірлер: 37
This has been in the works for a while! We filmed it back in late 2020 (when Mars was considerably closer than it is now), and then there was some non-mathematical chaos when my book came out which interrupted production somewhat, giving Mars time to move to a more respectful distance. But here it is, IN 3D: the Solar System, as you’ve never seen it before! (In my living room.)
@subagaming2075
3 жыл бұрын
awesome! your work is truly the greatest out of any astronomy channel i have seen 👍
@DrAndrewSteele
3 жыл бұрын
@@subagaming2075 Thank you!!
@dannyobrian5957
Жыл бұрын
Steve mould colab helped me find your channel awesome
Phenomenal explanations accompanied by jaw dropping motion graphics Andrew 👌🏼 The fact that this only has 57 views so far is a crime!
Seen two of your videos by now, both of them were absolutely brilliant. Great work!
Great video , what software you used to do those editing on screen
Great video. Fascinating stuff. Really enjoyed the simulations.
@DrAndrewSteele
3 жыл бұрын
Thanks dude!
Do you use other social media such as IG and/or FB? If yes, can you let me know how are they called? Thank you and I love your work!
@DrAndrewSteele
3 жыл бұрын
Thank you! Sorry for the slow reply! And yes, here are some other social media links: Follow me on Twitter: twitter.com/statto Follow me on Instagram: instagram.com/andrewjsteele Like my page on Facebook: facebook.com/DrAndrewSteele
@babakgasimzade4176
3 жыл бұрын
@@DrAndrewSteele Thank You! :)
Great explanation and animations! The same problem occurs in molecular dynamics simulations! The only difference is that nobody cares, thanks to Heisenberg's uncertainty! This video deserves more views!
@DrAndrewSteele
3 жыл бұрын
Haha I’m glad there’s no Heisenberg uncertainty on the scale of the Solar System! Thanks!
So interesting! Thank you for posting.
Let's imagine that it happens; the Earth would become famous and mentioned in all courses/books of Dynamic Systems of planets which will have observed the collision as an example of bad luck...and this may even be the name they'll give to our dear Earth after having spotted it and registered it in a horrible anonymous nomenclature..."Planet BadLuck" ( "--|•`~^°\_" in their language)😒 [I'll never make fun of Hyperion again] Fantastic video, perfectly explained and illustrated. When I adopt a historical point of view, the thumbnail makes me think of Laplace's pulverised certainty that one day mathematics will predict immutable planetary orbits without the slightest time horizon to limit them. Poincaré introduced the grain of sand which seized that fine mechanics and Lazcar destroyed that prospect. Mathematics tells more convoluted stories than Laplace thought. Stories of probabilities and limits. "MARS ATTACKS !" in dispersed and chaotic order this time.
Really enjoyed that - thanks!
@DrAndrewSteele
3 жыл бұрын
Thanks Valerio :)
The sun literally shines out of your... ...coffee table.
@DrAndrewSteele
3 жыл бұрын
Hahaha
Nice coffee table.
@DrAndrewSteele
3 жыл бұрын
Haha thanks
Such a good video. There is only 1% chance that you don’t get 1 million followers. Let’s see if that will happen .
@DrAndrewSteele
2 жыл бұрын
Haha thank you! I hope you’re right :)
Are we going to be alive when that happens
Fantastic video. I loved the simulations and you could really tell how much effort was put into making this as high quality as possible. It is an interesting video to compare with Steve Mould’s video on orbital resonance (kzread.info/dash/bejne/g62imJabZK-0epM.html). One explains the stabilizing forces in the solar system, one the destabilizing.
@DrAndrewSteele
3 жыл бұрын
Thanks! And I loved that video too! Really great explanation of something I kind of thought I understood but probably didn’t really understand!
I understand you’re probably busy with science things but you should really upload more
@DrAndrewSteele
3 жыл бұрын
I will try my best!
@leftysheppey
3 жыл бұрын
I agree. Fantastic presenter
@DrAndrewSteele
3 жыл бұрын
@@leftysheppey Thank you!
4:00 Mercury has a diameter of approx. 4880 km, that is not the radius.
@DrAndrewSteele
Жыл бұрын
Dammit! Well spotted, I’ll add this to the errata… At least what I _say_ is accurate…if only KZread allowed re-uploads…
Finally u know ur KZread password 😂
@DrAndrewSteele
3 жыл бұрын
Haha yes the whole book thing was an elaborate cover-story
I am not hearing any talk about this in 2023!
Came from @SteveMould channel.