I remember watching a documentary about the Moon on the Universe series. It's said the days on Earth back then lasted only 4-hours long and the tides were much bigger. The Moon also looked bigger due to closer distance. That would be something to see if you could travel back in time, assuming Earth had a semi-solid surface.
Anton I love your videos, the way you explore the graphics and the amount of information you pass on makes your channel one of the best on the subject however I would like to suggest you explore more point of view from the planets mostly in subject like this.
Anton, I hope you're planning a video about what is possibly the first exoplanet moon to be discovered. They say it may be the size of Neptune, and is in orbit around a Jupiter sized planet.
Really cool and informative video. This is pretty much what I was looking for. I'm also curious if the mountains we see today are a result of the moon being much closer to the earth as well. It would make sense that the gravitational pull from the moon would spike up the landscape...
The moon does tug on the ground a fair amount, lifting it as high as a few feet at some points(At least that's what I remember hearing). But I know it does pull the ground up at least a few centimeters, but again I think it pulls more at different times. HOWEVER, it's not enough to make mountains. The mountains are created mainly by Plate Tectonics. In fact, the tallest mountains in the world, which form part of the Himalayan Mountains, were formed by the Indian Plate crashing into the Asiatic Plate. It is still crashing to this day and the mountains are still growing. They get a little taller each year.
look into the snow line in the early formations of the system. how it got pushed back as the sun grew larger, and eventually (or so the theory says) so far out that it simply condensed as an ice giant a.k.a. planet nine... snowline theory states that the ice from the snow cloud, formed with the planets as they were being made. Would explain how water got on venus earth and mars (as well as further out)... If this theory is true, and the result is an ice giant, 9th planet, I propose we call said planet Hoth =]
Disappointed that no mention of how large the tides were in those early days, and how the energy disippated by those tides helped to slow earth's rotation.
7:28 Anton you showed what the Moon would have looked like from the surface, but you just barely missed the Earth and Moon in the same frame from the surface perspective, so I cannot really tell here how "big" it would have appeared in the sky. Also would like to see a real-time representation of it's movement (not here of course bc it would take too long) across the sky to see if it was a perceptible movement or not?. And, undoubtedly, the Moon would have been in Earth's shadow more often and for longer periods as it crossed the night sky From what I can tell, it looks maybe like it would have been a perceptible movement to the naked eye, from west to east. Could someone please do DA MATH for me and determine whether we could visibly watch the Moon skate across the sky or not? thanks in advance!
Can you explain why the debris that made the moon didn't just get pulled into the earth, or why the moon didn't get pulled into the earth being so close please?
I wonder if the moon had something to do with playe tectonics. Maybe that's why Mars and Venus didn't have plate tectonics maybe they didn't have a big enough Moon pulling on the crust so the crush just solidified as one instead of solidifying in pieces
Your videos are very informative and entertaining, but I have to point out a mistake you made here. The lunar distance is about 384,000 kilometers (356,500 km - 406,700 km), not 300,000 km. It might have been an intentional simplification, but almost 33% difference is pretty big... :)
Heard a figure of 47 days when the Earth's rotation will match with the orbital period of the Moon, but the Sun would likely swell into a red giant before then
I'm wondering how high the ocean tide was when life first evolved. They always talk about tidal pools and I wonder how huge they could have been if the tide was higher.
Isn't the moon moving away at the rate of 1.5 inches per year, and are not the contents, well the Atlantic side, moving apart at the rate of an inch a year?
Makes me think the perimids we find around the globe may be balancing weights like those on a car wheel. Could the earth be in balanced by the amount of building materials mining and oil taken out of the planet , redistributed. Could the weight of a major city shift the planet. I think these could be greater issues than this global warming thing.
The strong tidal effects extract rotational energy so the moon becomes locked. The tides also slow down the orbits. Most of the moons in solar system are tidal locked.
Trying to wrap my head around the Moon's orbit, correct me if i'm wrong but does the Moon orbit the opposite way to which we perceive because the Earth is spinning?
Anton, I really like your videos. I am actually learning a lot about astronomy I hope you get funded so you can buy your super computer and run really crazy simulations we all are dying to see! Just one thing i found really weird about this video: You didn't destroy the earth in the end like you always do, why?
The video would have been more useful if you specified the time of each step (i.e., how many million years ago). Also, it would be nice to determine at each time the apparent diameter of the moon
It's mathematically feasible theory that does not break any laws of physics or require a God figure to step in. Do you know of another "theory" that has real math behind it or, as I guess, nothing you can offer has any math to it at all.
I wouldn't agree that humans are the most complex lifeforms on our planet. The Homo sapiens genome is composed of approximately 3 billion base pairs. Amoeba proteus has 290 billion, but the world record is Amoeba dubia, at 670 billion. Hell, even a toad (Bufo bufo) has 6.9 billion base pairs, more than twice the genetic complexity of a human.
" ...about 28 days, which is what we call a Month..." Thanks Anton... Thanks. A month. Yes. I imagine a Steve Martin jerk-like character yelling "OH! So THAT'S what a month is!"
A strike traveling approximately 38,000 miles per hour was recorded during the full lunar eclipse on Jan. 21, 2019. Google: 'Pow! A meteor slams into the moon'. Just one of several hits that have been recorded over time.
I was lucky to be looking at the moon with my binoculars at the exact moment the lunar eclipse meteor impacted. Pretty cool...likely the rarest thing I will ever see in my entire life!
If this is how it really was, explain how moon stabilized it's orbit around Earth and not continued to move further away and suddenly has perfectly rounded orbit... That's not very likely.
It has enough mass to hold an atmosphere, look at Titan. It's just that it doesn't have a magnetic field so any atmosphere it could have would be blown away by stellar winds.
Why does temperature matter in holding an atmosphere? If Titan was moved to Earth's orbit, it would retain it's atmosphere, though the atmosphere would gain A LOT of Methane. It's atmosphere would decay, though, because AFAIK Titan doesn't have a magnetic field. So it's not temperature that matters, it's having a magnetic field, because magnetic fields block the worst of the sun's rays, which would otherwise strip most of the atmosphere off a planet or moon. Look at Mars, it can get up to 25 C there, but since there's no magnetic field, it's atmosphere is less than 1/100th that of Earth's.
I've only recently found out about Theia.. how did scientists come to the conclusion that Theia once existed? Is there any evidence about it? Amazing videos btw!! These are very interesting and educating :)
Hi Lea K You might already have your answer by now but just in case Im gonna give it a go. I am definitely no expert, just a couch potato that has watched too much youtube and tele. There are a number of factors that lead to the conclusion the Moon was once part of our Earth. Although it could be argued it was NEVER part of Earth as Earth didnt actually exist at the time the materials for the Moons creation were released. Two other smaller bodies gave birth too our Moon and the Earth at the same time is probably more accurate. Here are 3 factors for the theory, if I remember correctly.... 1. Composition: The elements present in samples studied under a microscope show there is an almost total lack of heavy elements in the Moons make up. If the Moon was made up of the same materials as the rest of the system it should have a certain percentage of the heavier elements that were present in the cosmic soup of our early solar system but it does not. Something seems to have filtered them out. The lighter elements present in the moons makeup match fairly well to those same elements here on Earth. 2. Gravity: The Moon is too large to have been captured by Earths gravity, if I remember correctly it has too much mass. So if it was a wondering lil planetoid out there somewhere and it went past Earth either it would not have been caught at all or, if had been, its great mass and the speed it would have been moving through space at the time would have likely caused it to slam into the surface of Earth instead of achieving a stable orbit. 3. Computer Modeling. Using super computers scientists and others ( a couple of interns I think) have determined that an impact from a smaller planetoid hitting a slightly larger one is capable of producing as a result a large planet and the leftover, which did not fall back to the surface under gravity, an orbiting ring of debris. The Debris would have been composed of the surface materials of both planetoids and the heavier elements which gravity had already pulled deeper into each body would have remained relatively intact and simply merged together to give us our Earth. The ring of debris would in a very short space of time have joined together in orbit to form either the Moon as we know it or possibly several orbiting moon-like objects. These smaller objects would still end up colliding in a relatively short period of time to form the Moon. Apparently the second option is less likely but still possible. Couple of points: When I say the moon formed in a short period of time, I mean SHORT! Tens of thousands of years but less than a million. I think i even saw an estimate of one year for the bulk of the mass to have formed! The collision was modeled in a variety of ways but the ONLY way that works is a glancing blow, sort of off to the side, at a fairly specific angle of impact. A direct impact would have destroyed both planetoids and a small impact with both planetoids just hitting slightly wouldnt caused the damage required. A glancing blow it the right angle literally causes the surfaces of both bodies to peel off. The centres merge and most of the debris blown into space does not have enough velocity to escape orbit so it would form a ring instead. For reasons I cant recall well enough to explain (gravity, planet size, place in the system, etc) a ring will not remain stable around the Earth in this situation, it would form an orbiting body. If anyone out there is a scientist feel free to let me know how close I got with this off the top of my head explanation! Id hate to put Lea wrong!!
Thought I should note that it's never referred to as Moon - we always refer to it as The Moon in English. The same applies to the Sun, we only ever refer to it as The Sun, not Sun. Love your videos though Anton! :)
Thats why the front face of the moon is smooth , reflected heat from the molten Earth melted it , also there was way more tides a day back then,,,,,,also you sound funny in the old vids,,,No " Wonerful Person" yet...good work anyway..m8
If anyone can answer my question how close was the moon 200 million years ago to Earth I can't seem to find any information out whatsoever I want to know what the dinosaurs got to look at each night if it was clear
No. That is IMPOSSIBLE. And there is no mathematical model that can be constructed to show such a scenario. Remember, without the math behind your idea you have nothing but wishful thinking.
How long would a day be in 1,000 years? "[O]cean tides generated by both the moon and sun's gravity add 1.7 milliseconds to the length of a day each century," Scientific American, "Fact or Fiction: The Days (and Nights) Are Getting Longer," Adam Hadhazy, June 14, 2010. Seventeen milliseconds longer? 58,823 years before we add one single second to our day?
