James Webb Space Telescope - Heidi Hammel (SETI Talks)

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  • Опубліковано 18 лис 2024

КОМЕНТАРІ • 16

  • @rytokavosmagas
    @rytokavosmagas 13 років тому

    I'm actually not a scientist, but a student of medicine - however, videos like these make me thoughs, that maybe I should've turned to an another hellishly interesting field, arise from time to time :). Thanks very much for this video! :)

  • @henriok
    @henriok 13 років тому

    To answer the lagrange point question. L2 is unstable equlibrium lagrange point so it won't collect matter as the L4 and L5 does, which are stable. The best example of this is the Trojan/Greek asteroid clusters that lies in L4/L5 in the Sun-Jupiter complex. But there are no asteroids in the L1/L2/L3 points.

  • @SETIInstitute
    @SETIInstitute  13 років тому

    @cbellh47 Our pleasure! Hope the audio was ok ...

  • @retoblubber
    @retoblubber 11 років тому

    @ 21:36 correction: 40k is not -200 F° but rather -400 F°.
    It's -388 F° to be exact. This should be obvious SI-flutent person, since 40K is -233 C° (0 K = -273 C°), so how could that number be less in Fahrenheit... or, for non-metric folks: As absolute zero is at -460F°, add 40 K (80 F°, approx. 1 C° ~ 2 F°) and you get -380 F°.

  • @cbellh47
    @cbellh47 13 років тому

    Thank you, Enjoyed the talk very much

  • @retoblubber
    @retoblubber 11 років тому

    I am by no means an expert, but the gold layer coating is only a few micro inches thick (a few millionths of an inch).
    Compare that thickness to the flaw of 90 micro inches in the perimeter of Hubble's mirror.
    So even if gold has a considerable thermal expansion coefficient, the overall change in the coating's thickness is insignificant. But again, I'm not an expert.

  • @SETIInstitute
    @SETIInstitute  13 років тому

    @henriok Thanks very much for the clarification! Cheers!

  • @Dleger13
    @Dleger13 12 років тому

    Okay, not many comments here, but could use some help. The mirrors are made of Beryllium so they don't change shape in the space, but what about the gold coating? what keeps them from changing shape? i know they've done cryogenic testing so it must work, but why?

  • @rytokavosmagas
    @rytokavosmagas 13 років тому

    Sorry, some really silly typos there, but the main message shoud be decypherable :)

  • @gusplotnik39
    @gusplotnik39 11 років тому

    im sorry for the typos! i mean,ive nad the BIGGEST crush on you since i have seen you on the science channel and your astronomy studies.you and your mind especially are SOOOO beautiful!!Im in love with doctor heidi hammel!

  • @paulsypersma7165
    @paulsypersma7165 11 місяців тому

    the smaller are your tweeters,is what happened,wide sreen and a 19in prove that,clarity monitors.

  • @paulsypersma7165
    @paulsypersma7165 11 місяців тому

    what i really want to know is how much of a watchdog are should they find inhabitants.will you stand down.

  • @ArcanaL0rd
    @ArcanaL0rd 12 років тому

    Somone can explain why this telescope is limited to see obiects form max 13.7bil years away +- 0.5bil years away? sound like this telescope mechanic is limited because of big bang theory. and this make no sense for me, realy i cant understqand this, what if universe is older than 13.7bil years ? any chance to detect obiect who exist far away than big bang theory range speculation?

  • @ArcanaL0rd
    @ArcanaL0rd 12 років тому

    Thank you for answer, i have agree with your opinion, i just think wrong while wrote my old coment, we cant see (because of age of universe) and images-light form some obiects never rach earth even in future, espetialy if universe it self expand faster than light (in some theory) sad part of this show us, images form universe are limited for our civilisation.

  • @gusplotnik39
    @gusplotnik39 11 років тому

    dear doctor heidi hammel: i would give ANYTHING TO BE YOUR BOYFRIEND!!!ive hd the biggect crush on you since i have seen you on t.v. with astrony studies!!!you and your mind ae soooooo beautiful!!!