Notice Dr Schmitt starts his lecture by showing a photo of the moon, and making a statement about the moon being approximately the same size 4.6 billion years ago as it is today. I guess the consensus at that time was still that the Earth and Moon formed simultaneously. I read that the giant impact hypothesis was suggested back in the 40's, but not widely accepted until the 80's and later, with computer modeling?
It's hard to find this kind of topic on RU-vid. Nice presentation, many thanks. Actually an alternative way to what the program doesn't do, good idea! I thought of boreholes that are not drilled as a grid. A similar check can be realized by selecting the dominant and secondary directions and repeating the same check on the additional directions using subsidiary holes to be added.
The world is getting better? For high paid people in ivory towers perhaps. What have you been smoking? Rosling is very very dead by the way. I hope it hurt that damn liar.
resurfacing completed 1/2 bya means atmosphere was formed at about the same time - which means current atmo is product of resurfacing event…which means solar wind has only been chewing on Venus atmo for 1/2 billion years…because there’s no active magnetic field…because there’s no internal heat…because it was rapidly expended in resurfacing event…which artifact is outgassing…which is Venus’ atmosphere…which mass happens to be exactly proportional to the planet’s mass - in nearly precise proportion as it is on earth…were one to count the mass of the oceans and the ‘cryosphere’ as part of earth’s atmosphere and simply averaged against earths mass.. Amazing! Everything obeys thermodynamics and conservation…especially where supercritical CO2 is so efficient in distributing energy…enough to arrest planetary rotation in 500 million years time…
Fascinating topic. I stumbled across volume 1 of "The Archaeology of the Gravel Terraces of the Upper and Middle Thames" at a second hand book stall in Swindon for £3.50 absolute bargain for someone like me. I recognise many of the slides shown here in this video. Thank you so much. I would never had known the local prehistoric history of the area if it wasn't for these resources. ❤
After analysis polypterids (air-breathing lobefins with heavy scales) nest with lungfish (air-breathing lobefins with heavy scales), which are excluded from the published cladograms of Giles et al 2017. The editorial summary of Giles et al 2017 reported, "With their combination of lobe fins, lungs and thick scales, bichirs have been allied with Devonian lobefins and even amphibians, but it is now generally accepted that they are the living sister group of all other ray-finned fishes (Actinopterygii)." "Generally assumed" is not a term anyone should consider scientific. Perhaps it is time to add a long list of lungfish to a revised analysis and so come to a more precise and supportable hypothesis.
The Earth (has in the past) will do its thing, sea levels will rise and fall, ice will melt and accumulate and it was done without US making any contribution. We are a glitch to Gaia. Thank you for uploading and sharing.
Plate tectonics theory was a collective 'discovery' or 'invention'. cause we are still understanding more and more and making corrections. It is actually hard to point out a single scientist that gave 'a great leap forward'... Morgan, McKenzie, Wilson, Hess, Tharpe, DuToit... all brilliant and contributing guys ! In this sense, plate tectonics is like Quantum physics.. a collective development theory. By comparison, these theories are in a somewhat strong contrast to Relativity theory, or perhaps to the theory biological evolution.. where we can actually point out single men that gave a giant step...still immersed in an historical antecedent and zeitgeist..
Once you put it all together it's clear to see that Mercury is actually Venus' moon which separated from Venus similarly to how the moon is still recessing from Earth.
Why bring Earth into this conversation at all? The navel-gazing from liberal space nerds makes these ppl Earthbound "landlubbers" cemented into their own childish egotisms and completely intellectually and imaginatively unprepared for the hard realities of space. There's another documentary called VENUS: DEATH OF PLANET. Death how? Because it didn't wind up like Earth? It's just absurd. Focus on what the planet is, not what it is not. They don't even know how life formed on Earth. If Mars' low gravity environment makes it physiologically not a possibility for long-term human settlement - and this claim has a lot of backing - then Venus is the only other option. Ergo, if one wants to approach it from an anthropomorphic viewpoint, concern yourselves less with why it did not become Earthlike but rather how humans can survive there long term.
When I started home shopping in Florida (2019) there was a lot of mis-information on sinkholes. I tried to do my homework, but lots of the data I gathered turned out to be wrong. My parcel has ~ 70ft of vertical drop from the top of the driveway to the back corner, and the erosion is something I never even imagined possible, based on my Southern New England background.
When we are able to engineer a time machine, then it might be possible to know how dinosaurs behave. However, even with that unlikely invention, I do not think we could know how they think unless we learn to speak their language. In the mean time, chickens are perhaps our best proxies to decipher their behavior.
Fascinating discussion but my bet goes to dinos and reptiles of any age thinking and acting a lot like contemporary alligators, lizards, and snakes...after all how much has the reptilian brain changed??(note against strong temptation I have kept politics out of this)
Why are there no antarctic climate records that cover the last 1000 years. The abundant 800000 year graphs dont allow to to study our more recent past. If we had a well resolved temperature record showing the last 1000 years, we could drop Michael Mann's hockey stick in the trash can. As of now these IPCC Climate priests claim thet MWP and LIA were local events that can be flattened out. With a record from Antarctica, this lie would burst n their faces.
I have a 12 pound primal meteorite unclassified but definitely not just an ordinary rock was found in a rock quarry in Dryden Texas just like one in lecture
Incredible pictures. The moon is a fascinating place and Jack Schmitt has gotten much better at expressing himself over the years. I would love to attend such a lecture. I watched Apollo 17 as a sixteen year old. Amazing how time has passed.
The planet is degassing due to receiving energy from the Sun as it gradually approaches closer to it. The degassing blows the dust accumulations off the surface - revealing the lower layer.
