Slashdot Mirror


China's Chang'e-4 Launches On Mission To the Moon's Far Side (nytimes.com)

An anonymous reader quotes a report from The New York Times: China is aiming to go where no one has gone before: the far side of the moon. A rocket carrying the Chang'e-4 lunar lander blasted off at about 2:23 a.m. local time on Saturday from Xichang Satellite Launch Center in southern China. (In the United States, it was still midday Friday). Chinese authorities did not broadcast the launch, but an unofficial live stream recorded near the site showed the rocket rise from the launch pad until its flames looked like a bright star in the area's dark skies. Nearly one hour later, Xinhua, China's state-run news agency reported that Chang'e-4 had successfully launched. Exactly when it will set down at its destination has not yet been announced -- possibly in early January -- but Chang'e-4 will provide the first close-up look at a part of the moon that is eternally out of view from Earth. The rover will attempt to land in the 110-mile-wide Von Karman crater. The crater is within an area known as the South Pole-Aitken basin, a gigantic, 1,600-mile wide crater at the bottom of the moon, which has a mineralogy distinct from other locations. "That may reflect materials from the inside of the moon that were brought up by the impact that created the basin," reports The New York Times.

The suite of instruments on the rover and the lander -- cameras, ground-penetrating radar and spectrometers -- "will probe the structure of the rocks beneath the spacecraft, study the effects of the solar wind striking the lunar surface," the report says. "Chang'e-4 will also test the ability of making radio astronomy observations from the far side of the moon, without the effects of noise and interference from Earth." It will also see if plant seeds will germinate and silkworm eggs will hatch in the moon's low gravity.

41 comments

  1. Ah damn, the moon men will not be pleased... by Anonymous Coward · · Score: 0

    That is all we need, another space war... Thanks China!

  2. Expensive propaganda? by Anonymous Coward · · Score: 0

    Commies love their propaganda.

  3. Dang China by BringsApples · · Score: 1

    So far ahead of the game of technology and yet only just now starting to put stuff on the moon. The US did that almost 50 years ago. But, being that the US lost all of its data in order to go back to the moon, it can be said that America has forgotten more about space travel and landing on other astral bodies than everyone else knows.

    /sarcasm

    --
    Politics; n. : A religion whereby man is god.
    1. Re:Dang China by Anonymous Coward · · Score: 0

      Surely they want to land in the Sea of Tranquility and claim all sea navigation routes belong to them. Maybe build an artificial island. landing in the Antartic is a problem, because Australia does not allow whaling or mining. Not sure if there is a flat moon society, but would it not fall off the edge?

    2. Re: Dang China by Anonymous Coward · · Score: 0

      Chinas technology is not as great as you say it. Everything they make is shoddy unless you make them build it right or you dont pay them. You think they do that with their own gear? No.

      And we havent lost any of our data. Thats just ignorance, and telemetry isnt key, process is. And we get process

  4. Far Side by Anonymous Coward · · Score: 1

    Please slap any reporter you see saying Dark Side.

    1. Re: Far Side by Anonymous Coward · · Score: 0

      Suck my dark balls, you pedantic faglord

    2. Re:Far Side by Anonymous Coward · · Score: 0

      The "Dark" part simply means that we (used to) lack information about this side. Until the Apollo program nobody had ever seen it.

      The same usage of Dark is why it's "dark energy" and "dark matter".
      I'll agree far side is a better term, but dark wasn't intended to convey information about light hitting it.

    3. Re:Far Side by The+Grim+Reefer · · Score: 1

      The "Dark" part simply means that we (used to) lack information about this side. Until the Apollo program nobody had ever seen it.

      I always thought it was the far side of the moon. At least that's what I remember everyone calling it until Pink Floyd released "The Dark Side of the Moon". To be fair, it was a hugely popular album. I think it stayed on the Billboard charts for fifteen years after it's release.

    4. Re:Far Side by Anonymous Coward · · Score: 0

      > The "Dark" part simply means that we (used to) lack information about this side. Until the Apollo program nobody had ever seen it.

      Not in person, but the USSR photographed it in 1959.

    5. Re:Far Side by Aighearach · · Score: 1

      What's wrong with Pink Floyd, man?

      Did you have a bad trip or something?

  5. What will they find? by Anonymous Coward · · Score: 0

    Nazis?

  6. Baloney by Anonymous Coward · · Score: 0

    The Six Million Dollar Man has already been there--in person, at that!

  7. Ohhh the Far Side... by wolfheart111 · · Score: 1
    --
    [($)]
  8. No signal on the Far side by neoRUR · · Score: 1

    Do they have another satellite? Because how are they going to get the signals back?

    Also we have already mapped the whole moon, so what do they plan to find out?

    1. Re:No signal on the Far side by JaredOfEuropa · · Score: 2

      They do have a satellite in orbit around the moon to relay the signals. And they are not mapping the moon but exploring the surface.

      --
      If construction was anything like programming, an incorrectly fitted lock would bring down the entire building...
    2. Re:No signal on the Far side by godel_56 · · Score: 3, Informative

      They do have a satellite in orbit around the moon to relay the signals. And they are not mapping the moon but exploring the surface.

      I don't know that it's actually in orbit. The comms satellite is beyond the Moon in the L2 point of gravitational balance with the Moon and the Earth. Because the Moon is smaller than the Earth, apparently there's enough room to 'peek around the side" and relay signals to Earth.

    3. Re:No signal on the Far side by scdeimos · · Score: 3, Informative

      Do they have another satellite? Because how are they going to get the signals back?

      It's communicating via the previously launched Queqiao "Magpie Bridge" relay satellite which is in a halo orbit around the second Earth-Moon Lagrange point (E-M L2). REFs:

      1. https://en.wikipedia.org/wiki/Chang%27e_4#Lander_and_rover
      2. https://en.wikipedia.org/wiki/2018_in_spaceflight#May
    4. Re:No signal on the Far side by cavreader · · Score: 1

      I'm still a little hazy on the "planting seeds to see if anything will grow" part of the mission. And China is hedging it's bet by landing on the dark side so if their probe crashes no body will see it.

    5. Re:No signal on the Far side by neoRUR · · Score: 1

      So they are planing a plant to claim the territory?

    6. Re:No signal on the Far side by Aighearach · · Score: 1

      I've seen the cartoon version, it's pretty awesome.

      Don't worry if it crashes, those mutant girls are pretty strong. They'll find a way to complete the mission. At least, until they make the mistake of planting the seeds...

    7. Re:No signal on the Far side by JaredOfEuropa · · Score: 1

      You're right, it's at L2 in what's referred to as a "halo orbit". So still an orbit! (to be honest I thought it was actually orbiting the moon)

      --
      If construction was anything like programming, an incorrectly fitted lock would bring down the entire building...
  9. What powers the rover? by Shouldbeworking · · Score: 1

    What powers the rover, I wonder? Can't be solar panels. Nuclear?

    1. Re:What powers the rover? by Anonymous Coward · · Score: 0

      It's a combination of solar panels and nuclear backup usually, but why wouldn't solar work? You're not one of the idiots who still think the "dark" side of the moon gets no sunlight, right? You're not a Republican right?

      You can visualize an object spinning in space around the Sun, basic shit, right?

    2. Re:What powers the rover? by Anonymous Coward · · Score: 0

      I can't tell if this is sarcasm/trolling

    3. Re:What powers the rover? by Megol · · Score: 1

      RTG using plutonium most likely, high (relatively) power output in a compact package.

    4. Re:What powers the rover? by Anonymous Coward · · Score: 0

      Uh, their whole stated plan here was to grow plants there... Pretty sure they're using the Sun to do that, unless even more retarded than the OP and they also think the "dark" side gets no sunlight...

    5. Re:What powers the rover? by Gavagai80 · · Score: 3, Informative

      There is a legitimate concern with using solar panels somewhere that has 2 week long nights. But you're correct that they're combining nuclear with solar to address that, having the lander power down and not do any work at night with the nuclear being just enough to keep it warm:

      "The rover and the lander feature solar panels for daytime power and operation, along with nuclear plutonium-238 heaters to keep their electronic components warm during the two-week-long lunar night." (source)

      Apparently solar is enough cheaper or longer lasting than other options that it's worth being limited to half time operation.

      --
      This space intentionally left blank
  10. This will not end well by Anonymous Coward · · Score: 0

    Everyone knows that's where the Nazi's are.

  11. tracking station in Argentina. by Anonymous Coward · · Score: 0

    50 year lease of 500 acres in Argentina for their deep space satellite dish to track this launch.

  12. China is aiming to go where no man has gone before by nospam007 · · Score: 1

    ...the women's rest room.

  13. Good luck Chang'e-4 by Anonymous Coward · · Score: 0

    China may not always be the most popular country, but genuine scientific space exploration is something we need much more of.

    I'm sure China will let us copy their results.

  14. Re:3... 2... 1... by Anonymous Coward · · Score: 0

    I'd also expect some spectacular discovery... "Chang'e-4 discovers alien crash site" or "Chang'e-4 discovers moon is actually made of Cloverdale cheese"

  15. Re:China is aiming to go where no man has gone bef by Anonymous Coward · · Score: 0

    Why would your name be "no spam" I wonder? Irony or sarcasm? One of the two.

  16. Re:China is aiming to go where no man has gone bef by Anonymous Coward · · Score: 0

    Not true. Plenty of trannies in teh west.

  17. Re:China is aiming to go where no man has gone bef by Anonymous Coward · · Score: 0

    Trumpies, trannies, what's the difference.

  18. Re: 3... 2... 1... by Anonymous Coward · · Score: 0

    I think the key to this is to understand how much fuel is being used and that they are likely to run into hiccups during the early part of this, due to Chinese inexperience. The Chinese strength is in achieving the goal of the mission. Perhaps if they announce details of the launch early, third parties can help smooth liftoff

  19. Re:3... 2... 1... by Anonymous Coward · · Score: 0

    > "Chang'e-4 discovers alien crash site"

    I remember when "Transformers: Dark of the Moon" came out, and I saw the trailer in the theater. They showed the Apollo 11 astronauts landing, then switching over to a pre-recorded tape while they scooted off to secretly investigate an alien crash site. "We have 20 minutes..." or some such dialogue.

    I thought, "They can't REALLY be suggesting that the astronauts zipped around to the far side of the moon and back in 20 minutes??"

    So when it came out on video I rented the DVD. That is indeed what they were depicting. Dumb!