Astronomy Lecture – the Planets


Astronomy Lecture – the Planets

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25 Responses to “Astronomy Lecture – the Planets”

  • tronthor91 says:

    Is it possible that Jupiter has pulled Mars away from the sun?

  • AdvancedPropulsion says:

    You need more physics lectures. 2nd+ year physics, not introductory physics. Or even, some astrophysics videos, physics of orbits and incomming satellites.

  • nextbid says:

    @doctordave thank you. i think i understand now. i was confused because of TV. however, you and “recoveredperv”, who has a degree in geology, and your common sense replies, have cleared me up on the subject. sorry for wasting your time. I did enjoy the subject matter though. yours, nextbid

  • doctordave says:

    @nextbid Yeah – glad someone cleared that up. Anyway, I think you are confusing the geological forces responsible for raising the Colorado Plateau and the erosive forces responsible for digging out the canyon. YouTube doesn’t let one post links but u can Google…

    “The uplift was caused by pressures deep with the Earth and may have been caused by additional conflict between the North American Plates and the Pacific Plates.”

    … for a page with a detailed account of the geological history.

  • nextbid says:

    @recoveredperv sorryy cob. I thought that was from doctordave. As i now apoligise to doctordave as i thought it was him. SO, can you agree with me on the 10,000 metre uplift , at least? P.S Sorry doctordave. (i think you are both wrong) nextbid

  • recoveredperv says:

    @nextbid Sorry bro, but I have a degree in Geology and the Grand Canyon WAS carved out by the river. The Colorado river carries five times as much sediment as any other river and is basically liquid sandpaper. Also, there is no way NatGeo would support a theory saying the GC is the edge of two continents.

  • Minilantz1 says:

    :O 1h 19mins long vid O.o

  • doctordave says:

    @WGBraves24 You won’t make it in college if you use Wikipedia and try to pass it off as a primary source in a RESEARCH PAPER, but if you want to know what the mass of Jupiter is or what year Einstein died, it’s absolutely fine.

  • WGBraves24 says:

    You wouldn’t make it in college if you use Wikipedia. :(

  • doctordave says:

    @nextbid exactly – it goes on to say “This uplift has steepened the stream gradient of the Colorado River and its tributaries, which in turn has increased their speed and thus their ability to cut through rock.” So geology lifted the surrounding plateau, but the CANYON was cut entirely by the river.

  • nextbid says:

    @doctordave. ok, i don’t want to waste your time because geology isn’t your thing, however, if you had have scrolled down on the wikipedia grand canyon page you would have found info on the ‘colorado plateau’ which uplifted, and steepened the “stream gradient”. It goes on…. anyhow, back to space. nextbid

  • 2SKARX says:

    @doctordave thanks il keep that in mind

  • doctordave says:

    @2SKARX Absolutely. Wikipedia is an EXCELLENT source for basic science information. The articles are usually well sourced, and there is good oversight. Don’t believe me? Try to change one!!

    It’s not an appropriate scholarly source, but it’s a great place for basic, widely accepted info.

  • 2SKARX says:

    @doctordave u use wikipedia?

  • gamesbok says:

    @WICKEDMAN9MM The astronomical symbol for Pluto is PL. Some think it stands for Pluto, some think it stands for Percival Lovell. It doesn’t, it stands for PLANET, and nothing will ever change that……the bastards……the bastards…………..

  • nextbid says:

    @doctordave. Ok, I’ll try and find the doco and the scientists involved. you can argue it out with them. nextbid.

  • nextbid says:

    @doctordave. I watched a geography doco on the Grand canyon on Nat Geo. It made sense. Think about it. We would have Grand Canyons everywhere. Please check Nat Geo. nextbid.

  • nunoooooooooo says:

    @koolkatdjsonic21 A gass planet has the same lava, magmatic core that Earth has. In other words, it’s already ignited at its core. The only reason it is a “gas” planet, is because it is too big. In other words, in its outter surface, the gravity is much less stronger,because it’s much farther away from its center, and so gases form, rather than solid materials.

    So I really don’t think it can “ignite” into a star. I think stars form themselves strictly in nebulae, but I wouldn’t be sure !

  • doctordave says:

    @nextbid -First sentence on the Wikipedia entry for Grand Canyon – “The Grand Canyon is a steep-sided gorge carved by the Colorado River in the United States in the state of Arizona.”

    Care to provide a reference for your alternative claim??

  • nextbid says:

    you said in your lecture on our solar system ( which i loved ) that the grand canyon was formed by the Colorado river. not true. It was formed by either two continents, or two tectonic plates colliding,pushing up a mountain range, then retracting to leave a vast canyon. Much like when two forces of water meet together, then retreat. No river has, or can leave a canyon that deep.Erosion doesn’t take that big apart. Still, i am a fan. Thank you.

  • koolkatdjsonic21 says:

    is it possible that one of the gas giants could ignite and maybe become a star of sorts???

  • seriouslyhatecampers says:

    nibiru is a scare tactic to make you shop at asda according to obama l0l

  • Ibalon2012 says:

    @YellowBricks1234 yeah their aint no mathematical chance that their is another planet up their in that vast ,vast outter space,where their may be other organic ,spontaneous combustion creating life ,even

  • mastersduhgree says:

    @carterfamily8903 Agree

  • mastersduhgree says:

    @WICKEDMAN9MM Yeah….mickey really misses him.


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