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Earth Departure Movie From MESSENGER Spacecraft

A reader writes:"The Mercury-bound MESSENGER spacecraft took 358 images during a gravity assist swingby of Earth on Aug. 2, 2005. Those images were sequenced into an MPEG movie showing the view from MESSENGER as it departed Earth."

23 of 193 comments (clear)

  1. Mirror by Anonymous Coward · · Score: 5, Informative

    Corale Cache everyone!!! MESSENGER Flyby

  2. Slashdotted already? by nystagman · · Score: 5, Funny

    I count a grand total of one reply in this thread, and already the site seems to be slashdotted. I guess this just proves that the existence of the silent majority of ./ readers who actually try to RTFA before they post. My faith in humanity is restored!

    --
    Theory and practice are the same in theory, but different in practice.
  3. And as always... Slashdotted into Oblivion. by wschalle · · Score: 5, Informative

    Here's the cache. Movie

  4. Beautiful.... by ClaraBow · · Score: 5, Insightful

    These images have a calming, peaceful effect. It is amazing how beautiful the earth looks from a far and how chaotic it seems when your in it! Get me out of here :)

  5. Interesting by slavemowgli · · Score: 5, Insightful

    Interesting. If I didn't know better, I would've said that this is a POV-Ray animation...

    --
    quidquid latine dictum sit altum videtur.
    1. Re:Interesting by alfboggis · · Score: 5, Interesting

      Yeah, the earth is actually pretty smooth. Its diameter is 13,000 km, while Mount Everest is only about 9km high -- just 0.07%. Clouds cling very close to the surface at about 5km. That's about the thickness of a piece of paper compared to a basket ball.

  6. un /.'ed version by smoondog · · Score: 4, Informative

    Can be found here

    -Sean (OutdoorDB - The Outdoor Wiki

  7. In other news... by mwvdlee · · Score: 4, Funny

    "The MESSENGER MPEG-hosting server took 358 images during a slashdot assist launch off of Earth on Sep. 5, 2005. Those images were sequenced into an MPEG movie showing the view from the MESSENGER MPEG-hosting server as it departed Earth."

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  8. Ob. DNA - How to Leave the Planet by Haydn+Fenton · · Score: 4, Funny

    1. Phone NASA. Their phone number is (713) 483-3111. Explain that it's very important that you get away as soon as possible.
    2. If they do not cooperate, phone any friend you may have in the White House -- (202) 456-1414 -- to have a word on your behalf with the guys at NASA.
    3. If you don't have any friends in the White House, phone the Kremlin (ask the overseas operator for 0107-095-295-9051). They don't have any friends there either (at least, none to speak of), but they do seem to have a little influence, so you may as well try.
    4. If that also fails, phone the Pope for guidance. His telephone number is 011-39-6-6982, and I gather his switchboard is infallible.
    5. If all these attemps fail, flag down a passing flying saucer and explain that it's vitally important you get away before your phone bill arrives.

  9. Impressive! by Henriok · · Score: 5, Interesting

    This is the real deal! The Earth is getting smaller in a realistic manner witch I've never seen before. I wonder what kind of acceleration and speed we are taling about here? These would be completely different figures in the movie and the real event. Someone care to do the math?

    Don't you just love the reflection of the Sun? And the absence of a "glowing" atmosphere halo? This is what the Earth really look like. Please render planets like this when you do SciFi flicks in the future!

    --

    - Henrik

    - when the Shadows descend -
    1. Re:Impressive! by stupid_is · · Score: 4, Informative
      From TFA:

      The movie starts when MESSENGER was 40,761 miles (65,598 kilometers) above South America on Aug. 2. It ends when the probe was 270,847 miles (435,885 kilometers) away from Earth - farther than the Moon's orbit - on Aug. 3.

      Looking at the mpeg with the timestamps, it was pretty much exactly (8mins out) 24 hours, so that makes it travelling at an average speed of roughly 4.29 km/s.

      --
      -- Intelligence is soluble in alcohol
  10. No sound?!? by jemnery · · Score: 5, Funny

    I don't get it - where is the audio on this thing? In the background there must have been either:

    1. A swooshy spaceship noice

    or

    2. The opening bars of the Star Trek: TNG theme tune

    1. Re:No sound?!? by DigiShaman · · Score: 4, Funny

      If it was from an alien spaceship, I would imagine something translated into...

      "Are we there yet?

      no

      Are we there yet?

      no ...

      Are we there yet

      NO!

      --
      Life is not for the lazy.
  11. Underwhelmed by Linker3000 · · Score: 4, Interesting

    With the current state of CGI and a world awash with 'fake' scifi images running all the way back to 2001: A space Odyssey, it's a shame that this footage just looks so 'plain' even though it's 'the real thing'. Mind you, I find Google Earth truly fascinating.

    --
    AT&ROFLMAO
  12. collision 27th frame from end by emptybody · · Score: 4, Interesting

    go frame by frame for some interesting events.
    most spectacular is the flash 27 frames from the end. looks like it could be lightning or a large meteor.

    --
    comment directly in my journal
    1. Re:collision 27th frame from end by Anonymous Coward · · Score: 4, Funny

      Holy mother of god, if you zoom in on the earth at the flash point 27 frames from the end of the footage, you can just about make out (through the compression artifacts) the image of a Klingon battle cruiser breaking orbit and jumping to warp.

    2. Re:collision 27th frame from end by Ariane+6 · · Score: 4, Informative

      If by 'collision' you mean 'collision of a cosmic ray with the detector, then yes.

      Any meteor big enough to be visible from that far away would have been noticed by a LOT of people.

      There is a nice flash over southern Africa when the Sun's specular highlight hits lake Tangaynika, though.

    3. Re:collision 27th frame from end by Ariane+6 · · Score: 4, Interesting

      Well, if we saw a thin crescent Earth, then the solar phase angle (sun-earth-observer) would be nearly 180 degrees, and the specular highlight would be right on the western (left) horizon, just like you see on when watching sunset over the ocean on Earth's surface. Since we're seeing a less mature crescent, that means that the angle is in fact only slightly greater than 90, and the highlight hasn't gone that far yet.

      Phase = 0 --> highlight is directly below you

      Phase = 90 --> highlight is halfway between nadir and the western limb

      As phase tends to180 --> highlight disappears over the western limb.

  13. Re:maybe you're rtight? is this fake? by MidnightBrewer · · Score: 4, Informative

    Actually, there was a great shot of Australia sweeping by and it was significantly darker before brightening again, because it has a relatively low specularity compared to the surrounding ocean (the hotspot was traveling over it.) The specular highlight was correct; the ocean does indeed have a highlight like that.

    I think calculating a 23-degree angle with absolutely no point of reference would be a bit of a challenge (it assumes the probe's camera is aligned to the solar ecliptic, which is pretty unlikely.)

    I think the problem is that most photos are very close and pretty much with the sun behind the photographer. Another good indication that this was real instead of animated - the complete lack of stars. Astronauts have commented that the reflected sunlight off of the earth completely drowns out the background stars - in other words, reality looks fake because it doesn't resemble the fake reality Hollywood has taught us to expect.

    --
    "Give a man fire, and he'll be warm for a day; set a man on fire, and he'll be warm for the rest of his life
  14. Looks like that Orbiter simulator by flinxmeister · · Score: 5, Interesting

    Has anyone played with that Orbetor Simulator?

    Seeing this animation made me realize just how good that programmer is. The visualizations on that simulator nailed it pretty well. And it's free too!

  15. Question! by nherm · · Score: 4, Interesting

    Ok I got a question about the spacecraft's orbit!

    From the video, the spacecraft seems to be travelling at the opposite direction of earth's translation (i.e. clockwise in the ecliptic plane, viewing from sun's north to south hemisphere), because the dayside is at the left, and the Earth is, well, becoming smaller...

    But, this diagram of messenger's orbit from the article in wikipedia shows that the spacecraft travells in the counter-clockwise direction (same as the planets)... so, I would conclude that the spacecraft speed is less than the Earth's orbital speed.

    Question: is that correct?

    1. Re:Question! by jrboatright · · Score: 5, Interesting

      Orbital mechanics is "not obvious."

      as an object drops into a lower orbit they orbit in fewer seconds. Venus goes around the sun in fewer days than earth does, as does mercury...

      HOWEVER, the linear velocity of an inner orbit is slower than the linear velocity of an outer orbit.

      So, to go in, you slow down. Which results in dropping to a lower orbit, which results in your pulling out "in front" of the object you're seperating from leaving it both "above" you and "behind" you.

      So, accelerating spinwise is out, and slower.

      Accelerating anti-spinwise is in, and faster

      let us not get into what happens when you accelerate OUT or IN....

  16. Background info on this video by Rocketguy2 · · Score: 5, Informative

    I was one of the team that worked hard to sequence this spacecraft operation, and I can assure you, it is quite real! MESSENGER, a NASA Discover program, was developed and is operated by the Johns Hopkins University Applied Physics Lab, is headed to the planet Mercury; not an easy place to get to. This flyby is the first of 6 (1 Earth, 2 Venus, 3 Mercury) that are required to put the spacecraft into Mercury orbit. Once there, the spacecraft will go into an elliptical orbit and commence a series of science observations. The extensive payload includes the following: narrow and wide angle imagers, LIDAR, X-ray, gamma-ray, and neutron sensors, magnetometer, visible, near IR and UV spectrometers, energetic particle and plasma sensors. The spacecraft did not take an approach video for two reasons. First, there were extensive instrument calibration efforts going on during that time (e.g. lunar and magnetospheric observations) that required specific spacecraft pointing. In addition, the solid state recorder space is limited, so we chose to get the single 24-hour sequence you see in the movie.