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Earth Images

  1. #331

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    wonder if anyone blew on the socket before it's turned on again


  2. #332

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    Waited 8 years for the perfect shot...

    https://www.theguardian.com/science/...-front-of-moon

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  3. #333

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    jrkob and shri like this.

  4. #334

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    Pretty cool ! As I understand it, the below is the first picture of the black hole in M87.
    @Tom007, feel free to correct if this is incorrect, this is from the FB page of an observatory back home.

    Name:  57170622_1880516395388257_4589304041904799744_n.jpg
Views: 81
Size:  7.9 KB

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  5. #335

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  6. #336

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    Space.Com has a good explainer video in this article.

    https://www.space.com/first-black-ho...telescope.html

    And then there are some practical issues with the data that they collect.

    The EHT team has used this megascope to study the two supermassive black holes for two weeklong stretches to date once in April 2017 and again the following year. The new imagery comes from the first observing run.

    There are good reasons why it's taken two years for the project's first result to come out. For one thing, each night of observing generated about 1 petabyte of data, resulting in such a haul that the team has to move its information from place to place the old-fashioned way.

    "There's no way that we can transfer this data through the internet," EHT project scientist Dimitrios Psaltis, an astronomy professor at the University of Arizona, said at the SXSW event. "So, what we actually do is, we take our hard drives and we FedEx them from place to place. This is much faster than any cable that you can ever find."

    This slows and complicates analysis, of course. Data from the EHT scope near the South Pole, for example, couldn't get off Antarctica until December 2017, when it was warm enough for planes to go in and out, Marrone said.
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  7. #337

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    During the press conference, at time 50:00 the guy says that the size of the black hole, as in the area where light can't escape from, is 1.5 light day's across. Which if my math is correct... should be 6 times the distance from the sun to Pluto.
    This object is badass !

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  8. #338

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    Quote Originally Posted by jrkob
    During the press conference, at time 50:00 the guy says that the size of the black hole, as in the area where light can't escape from, is 1.5 light day's across. Which if my math is correct... should be 6 times the distance from the sun to Pluto.
    This object is badass !
    Wow 1.5 light-day's is masive and impossible to imagine (1 light-second ~ 300 000 km ( I slightly rounded up ) that's a bit easier to comprehend) 1 light-min ~18,000,000 km. Btw as Pluto follows a highly elliptical orbit around the Sun - perihelion ( closest point ) aphelion ( most distant point ) the distance varies (Sun-Pluto) between 4,4 billion km and 7,38 billion km. 5,9 billion km is the average.
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  9. #339

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    For fans of that lunar landing which may or may not have happened...

    https://twitter.com/wapodavenport/st...06574971281409

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  10. #340

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    To add to the Apollo image, this is the speech that was planned if the mission failed.

    Name:  D_rAVlKWwAAccmK.jpg
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    Last edited by shri; 18-07-2019 at 10:45 AM.
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