Astronomy in the Year 2020
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Travel into the future for a preview of the Giant Magellan Telescope. This cathedral-sized telescope perched on a Chilean mountaintop will, like Star Trek's Enterprise, take us where no one has gone before. Stunning developments in optics technology will deliver images 10 times sharper than those of the Hubble Space Telescope. The Center for Astrophysics is not only a founding partner in this grand endeavor, but also is building the premier first-light instrument that will study other earths, the first stars, and the origin of our universe. Jeff McClintock is a senior astrophysicist at the CfA and a lecturer in the Harvard University Astronomy Department.
Comments
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I wonder of Jeff McClintock is in any way related to the famous geneticist, Barbara McClintock, who discovered "transposable elements" in '45.. She was laughed at for decades, but didn't care. Finally, decades later, people realized that she'd been right all along, and she got the Nobel Prize in '83... and she didn't care about that any more than she'd cared about people laughing at her and ignoring her work. All she ever wanted to do, to the day of her death at age 90, was to work in her lab with her maize.
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im 6 years old i did a nice telescope video check it
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wtf happened at 58:08 ?? how did she wind up at this lecture
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That old lady is dumb. It's just a big mirror. She must think that she is damaging herself when she stands in front of her mirror.
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great talk!
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anyone can spare a billion for a 2nd one?
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who would travel 5 days to get too a 1Km in diamiter telescope, i no I would, most astronomers in the near future will work and live, the MOON hehe the best spot to look at everything, :)
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The question at 58:08 is just beyond belief. It's scary to think that people like that have the vote, just like sane and intelligent people.
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21:42 It actually takes 3 numbers to completely describe a black hole. The mass, the spin, and the charge.
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At 11:39, that's Andrew Skemer. The system is HR 8799, ~129 LY away.(!)
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Skip to 05:10
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Sounds super inefficient. if the problem is about collecting light. why not develop a technique to collect light instead of just creating bigger and bigger machines. thats just stupidity.
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Einstein said that time is changed for objects travelling
at or near the speed of light. If photons are affected,
they could suffer from time dilation when they travel
thousands of light years. This could make them appear to
be red shifted. I pose the hypothesis that not all
apparent recession speeds of distant objects are due to
doppler shift alone. Some red shifting of photons could
be caused by time dilation. This appears to me to be more
likely than inventing a new form of energy to explain the
accelerating recession of distant cosmological objects.
Does a photon retain its original launch energy as it
travels inter-galactic distances? If a photon travels
indefinitely with no loss of energy in space we have the
equivalent of a perpetual motion phenomenon. If a photon
loses some energy as it travels, the loss could show
itself as a form of red shift.
A space mission comparable to the one that went to Pluto
could be configured to compare the changes in frequency
of signals between the spacecraft and Earth with the
apparent red or blue shift of the colours of stellar
objects within its field of view. This might be able to
reveal any red shifts of photons through time dilation.
I hope that by the year 2020 there will have been a check
on my hypothesis that there are ways other than Doppler shift
to cause the light from cosmological objects to appear to be redder.
If photons suffer from time dilation the so-called Hubble Constant
ceases to have any meaning.
Wilf James BSc. -
I deal with so many uneducated people everyday, watch the embarrassing debacle that is politics, and just when I think I have lost all faith in humanity I see people creating technology like this. It gives me the hope to carry on knowing there are incredible people like these making incredible discoveries we will all benefit from. Thank you.
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great talk
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Does this guy ever finish his
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This answered so many of the questions I have had since first learning of this telescope years ago as I became a docent at the Mt.Wilson Observatory. I have walked across those circles at the Santa Barbara Street parking lot and marveled at the difficulties such a huge instrument poses in comparison to the 100 inch telescope I show folks on the Mountain. Thanks so much for posting it here at YouTube.
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22:54 And suddenly time started. But don't you need time for something to suddenly happen, from nothing happening? lol
Can quantum fluctuations happen without time or space? -
Collimating that thing must be a pain.
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Very enlightening presentation. Thanks!
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