How many moons does the Earth have?
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- เผยแพร่เมื่อ 6 ส.ค. 2022
- So we all know that the earth has just 1 moon right? Well the actual number of moons that the earth has might be a little bit more complicated than that.
Before we start, it’s important to make sure we have a definition of the term moon. I’m going to say that a moon is a natural satellite that orbits a planet, dwarf planet or other solar system body. Moon is actually a bit of a colloquial term derived from our own moon, but I’m going to use the term moon instead of natural satellite.
In this video I’m going to look at a number of possibilities for extra moons of the Earth. These include ghost moons or Kordylewski clouds, quasi satellites, trojans and temporary satellites.
Planet maps from NASA
NASA/Goddard Space Flight Center Scientific Visualization Studio. Constellation figures based on those developed for the IAU by Alan MacRobert of Sky and Telescope magazine (Roger Sinnott and Rick Fienberg)
svs.gsfc.nasa.gov/3895 - วิทยาศาสตร์และเทคโนโลยี
I really like your format. No annoying distracting music. No annoying distracting videos of the narrator. Just good info about the topic. I wish other youtubers would make videos like yours.
Wow. I find it incredible that objects such as 614689 have only just been discovered in the past couple of years considering that it's essentially just leading Earth in its orbit, makes you wonder how many more there could be!
It also tells you how fast humans are advancing in technology, wether good or bad
sounds esoteric shit
didn't even know those clouds existed. Good video thank you!
Yes me too. I think they are the coolest part of the video. I should have saved them till last shouldn't I.
I just discovered your channel and I’m astounded that you only have 20K subs. This is Astrum and SEA level content
Thank you so much. To be honest I've grown quite quickly quite recently. I have a quite erratic upload schedule due to my full time job, so I post videos when I have the chance. My recent growth has been amazing, and I feel like my little band of geeks has gained quite a lot of new friends.
@@LearningCurveScience it's only the start!
With all those bodies flying around it's surprising that there's not more bit hits to earth. It's also pretty incredible that objects so small and so far away are detected.
it actually happens somewhat frequently that an object from space breaks into the atmosphere and disintegrates before it reaches the surface due to such a high speed in a more viscous environment than the vacuum of space. Actually just this week a meteor broke through the atmosphere where I live in Salt Lake City. Sounded like an explosion went off because of its velocity, but it never struck the surface.
Is the one eligible for a name the one that goes back and forth in a tadpole orbit ?
If so, I propose to call it Sisyphus, for the Greek mythological figure that was doomed to the depths Hades, cursed for eternity to push a huge rock to the top of a mountain, only for it to fall back down again, and have to start over again ad infinitum.
EDIT: Never mind, the name is apparently already taken by 1866, and is already classified as a minor planet.
Some of those orbits are crazy. I never knew they could do that.
Next video: how many moon-moons do we have?
Funny you should ask...
Excellent, I have been researching the Earth-Moon system for a novel, that I have just finished. I must say that I wished I had seen this 1st as it would have saved me a lot of time and I still found things out. All the best from a new subscriber you will get a mention in the book if it is ever published.
people who watch QI: *sweats profusely*
Ha ha, I think QI have covered this question 3 times... and got it wrong every time.
I'm pretty sure if earth hasn't cleared its orbit of all these other bodies, then earth should be demoted to a dwarf planet.
This is the second video I've watched from your channel...SUBSCRIBED. Keep up the good work
Thank you very much, I'm glad you're enjoying my videos.
Very informative. Thank you!!!
Did not know about those Kxx Clouds. Great video! looking forward to the next
The Earth has only one moon. It has many satellites though.
Really cool choice of topic
And thank you for sharing
The motion of a Trojan relative to the Earth resembles the nutation of a spinning top.
I'm going to beat the astronomers to the name. I hereby declare 614689 is called Sprinkles.
Our moons name is Luna
Mond
no it's not. it's "kuu"
Isn't that the planet that crashed into the Earth billions of years ago?
@@herobrine8763og it's the aftermath of that
@@herobrine8763og Theia was a mars size planet that alledgedly crashed into earth and formed the moon .
Nice
Very informative video. Thanks for sharing the information. How did you create those orbit graphics?
Thank you. I make all my animations using Blender. Most of them are moving objects on a path, some are paths within paths.
This gives me some QI flashbacks lmao
So....earth doesn't have rings. But particle clouds. Fascinating
Thank you.
How is a flyby also a capture? In order to be captured, wouldn't it have to not be a flyby?
My best guess is that at some point during its fly by, it loses enough energy to no longer have escape velocity, but then gains it back again before completing an orbit.
9:53 is a good analogy because it doesnt get fully captured, it ends up flying away and so is also a flyby
@@PizzaPowerXYZ I'm trying to figure out how the definition of a flyby capture is different from a regular flyby.
If it completely an orbit, it consider a capture. Without an outside force (in this case, the sun), in theory something that orbits a planet once is always capture (I'm sure there some very weird edge cases where this is not the case mind you)
Love this video keep up the great work
Can i ask you from what part of Britan does your accent come?
I'm from the north
@@LearningCurveScience Thanks, i love guessing these. I also like the film ;)
I don't know but my brother mooned me the other day.. so there's another one.
Fun fact: Earth's moon orbits the sun and would remain in orbit if Earth were removed. This is true enough that the moon's orbit around the earth is a small correction to its orbit around the sun if viewed from a perspective with the sun in the center.
This just made me think of something. How are scientists able to say astroids like these aren't a danger to the Earth considering the three body problem? Or is that why there's always that tiny percentage of it hitting us usually shown at the end of the prediction? I guess I answered my own question....
You partly answered your own question. But in space it is because "the three body problem" is a two-body problem in disguise. (!) The barycenter matters, scale matters, mass matters, distance matters. Those pendulums you see with "the three body problem videos" is actually a four-body problem because it all wants to go down, but the other arms are yanking under momentum and gravity too which won't create nice patterns **ever**, just chaos. But if you had it in zero g and swung the pendulum, everything would work like clockwork, if you had proper masses/swings. (Also, to discuss orbits of these slightly rogue objects the regular pendulum example everybody gives is pointless).
@@Yezpahr you see this is what I wish we had more of. When someone knows some knowledge another person lacks, instead of ridicule or ignorant remarks like I see 99% of the time. We should be like this and educate each other with respectful and altruistic comments. Thank you for the reply ✌🏽✌🏿✌🏻 I'll have to think on it some more before I respond 😉
@@Yezpahr also just fyi everything I learned about the three body problem is from the scifi trilogy series "the Three body problem" not TH-cam videos but that's neither here nor there I just wanted to say that
"That's no moon! It's a space station!"
beast video
I like to think I have little microscopic moons orbiting me.
How do you even detect something as small as cd3?!
I am racking my brain on how we could get to the Lagrange point that is ahead of our orbit. Is there a way?
Now, count Saturn's moons.
Earth Has 2 New Moons, The Total Is 3!
Geeshus... What a name.
2
moon
moonson
could a temporary satellite stay in orbit?
That’s no moon, it’s a space station!
death star
@@moonliteX yes, but the quote in the movie is space station.
3753 Cruithne -- pronounced "crew-with-knee"
2016 is when I was born
the moon is technically a planet
How many earths does the moon have? 🥳
Thanks for kilometer.
why?
The earth 🌎 used to have 2 moon's a long time ago
Why do you say "Muun" instead of "Moon"?
Probably equal parts being a Northerner and The Mighty Boosh
1
LaGrange points are natural garbage pits. If you put something there, don't even dream that it won't get dirty.
one*
Shh... Spoilers
One. It has one. Everything else is dust balls or artificial and all are wildly too small to have their own appreciable gravity wells. Saved you some time.
Spoilers!!!
I enjoy, I hope lots of attractive people mak secs wiv joo.
11:31 So that's how we got COVID-19! /hj
moooooooooooooooooooooooooooon
and also; for this reason Earth isn't a planet. Checkmate IAU
I thought those Trojans were orbing the Sun, and not the Earth.
Trojans can be found around Jupiter too.
@@jessicamorgan3073 which means Jupiter isn't a planet either! IAU BTFO'd eternally
You're quite right. Trojans like the other quasi satellites actually orbit the sun, but their orbit sometimes make them look like they are orbiting us. I believe we've found Trojans of Jupiter, Venus and Neptune (at least)
(Nope, my autistic Brain was messing with me LOL, sorry guys!)
you pronounced Cruithne completely wrong
you pronounce it like
Cro - ith - ne
i replaued the U with an O to make it easier to say
Stop with the “I hope I’m pronouncing that correctly”, gain some confidence bro
I think he is just pre-empting the abuse. If you’ve been on TH-cam long enough you will know how cruel humans can be behind a keyboard.
Stop with the "picking on the negatives", gain some positivity bro.
@@Anonymous-md2qp well he shouldn’t listen to what random commenters have to say
Their being respectful
Thank you. I'm neither Polish nor Irish, my pronunciations are at best approximations. I know I mangle my own language, I try my best not to mangle other peoples.
One. ONE. FFS.
Dust is not a moon - else my apartment has millions of moons. Objects that orbit the sun are not Earth moons as they don't orbit the fcking Earth.