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The Japanese satellite Selen-Kaguya orbiting the moon transmitted a high-resolution video

This is the first HDTV broadcast from space and shows the Earth shining above the Moon (the change in the Earth's position is due to the movement of the spacecraft)

The first HDTV broadcast from space - Earth shining above the Moon
The first HDTV broadcast from space - Earth shining above the Moon

The Japanese space agency JAXA and the Japan Broadcasting Corporation (NHK) successfully carried out the first high-definition transmission showing the sunrise of the Earth (see note at the end of the news) by the Japanese spacecraft Selen-Kagoya, which began to circle the moon at an altitude of about 100 kilometers from October 18, 2007.

The first time images of the Earth shining above the Moon were broadcast was during the Apollo operation. The Kagoya spacecraft captured high-resolution images showing the blue Earth that was the only floating object in pitch-black space. These are the first high-resolution images taken from an altitude of about 380 thousand km from the earth.

The images were taken during the experiment of the High Definition Television (HDTV) camera developed by the NHK for space operation. The data on the moving images taken by the Kaguya spacecraft were received by Jaxa's deep space network, and processed by the TV station.

At the same time, the spacecraft's instrument, whose transmissions were received at the Usuda station, confirmed that it is in good condition.

A final note: the phenomenon of the Earth's sunrise is only due to the changing position of the spacecraft orbiting the moon, as happened in the case of Kaguya and the Apollo orbits. This phenomenon cannot be observed from a fixed point on the surface of the moon. Humans who stay on the ground will always see the Earth at the same point.

The video of "Sunrise of the Earth"

The video of "Sunset of the Earth"

For a full size image - on the website of the Japanese Space Agency

13 תגובות

  1. Thanks for the article.
    I entered the site and turned the still image on the site (Earth from the Moon) into the desktop background of my computer. Amazing!!!

  2. Answer to the question: "Why don't you see stars in the video?"

    Very simply, the light reflected from the moon dazzles the camera. So the camera automatically/manually reduces the amount of light entering the camera.

    Just like walking at night.. in a lit area, you won't see many stars, and in an unlit area you will see many stars.
    All this is because the iris dilates and shortens in different lighting.

  3. To my father

    I continue to maintain my opinion that if we are on the moon's equator at a longitude from which the earth appears to be close to the horizon, we will see, we will also see sunrises and sunsets.

    Sabdarmish Yehuda

  4. By the way, note that the visible part of the earth is a complete circle
    So as the moon. It happens exactly once a month just as the moon shines fully once a month.
    To be precise, when you see from the earth that the moon is fully shining (the middle of a Hebrew month), then from the moon you will see the earth completely missing
    And vice versa when from the earth you see the moon completely missing (Rosh Chodesh in Hebrew) then from the moon you see the earth a full circle which is the situation in the photograph. That is, the photo was taken at the beginning of some Hebrew month. You can find out on which date the photo was taken and verify with the Hebrew calendar and check that it was indeed taken on the first Hebrew month.

  5. The reason for not seeing stars is different from what Chaim wrote.
    The reason is the same reason why you don't see stars in night shots on the CDA: exposure.
    The exposure sufficient to photograph the moon and so on is very short. To photograph the stars you need a long exposure which would have caused everything except the stars to be "burnt out".

  6. At the equator the change will be minimal, precisely at the poles the sun rises and sets from time to time, and Nars"T will take advantage of this to, on the one hand, enjoy peaks that have 70 percent of the time sunlight and, on the other hand, craters that are completely shaded.

  7. Regarding the concluding note at the end of the article:-

    A final note: the phenomenon of the Earth's sunrise is only due to the changing position of the spacecraft orbiting the moon, as happened in the case of Kaguya and the Apollo orbits. This phenomenon cannot be observed from a fixed point on the surface of the moon. Humans who stay on the ground will always see the Earth at the same point.
    End of quote.

    So it's a bit inaccurate. Because of the elliptical orbit of the moon around the earth there will be a displacement of the earth on the order of several degrees. I estimate even up to 10 degrees. If, for example, we are in the area of ​​the Moon's equatorial nest at a suitable longitude where the Earth appears close to the horizon, we will even be able to see sunsets and sunrises once in a lunar month (contrary to what is written in the endnote of the article).
    In addition, what is even more beautiful, we can see "moon shows" on Earth as well, from full Earth to eclipsed Earth with the addition of a blue annular halo around it due to the atmosphere.
    This alone can be a good reason to join the Takrov trip organized by the Israeli Association for Astronomy to the Moon.

    Have a good morning
    with a smile
    Sabdarmish Yehuda

  8. What strengthens the starlight on Earth is the atmosphere that makes them twinkle and thus appear larger for the cameras. It is a fact that Hubble, who makes long exposures in his photographs, sees millions of stars.

  9. The reason you don't see stars is for two reasons.
    1. The size of the star is smaller than a pixel of the camera.
    2. The camera is with its back to our galaxy and is looking into deep space.

  10. Can someone explain once and for all why you can't see stars? The same story as in the photographs of the sixties. So the cameras might not have been that good, but here it is

    HDTV

    Where are all the countless stars in the background? They are there, why don't you see them?

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