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1000's of new satelites to be launched

Discussion in 'The Cave' started by PaulG, Dec 30, 2019.

  1. PaulG

    PaulG New Member

    More very bad news for our planet..


    "To give you an idea of the numbers, there are currently just 2,200 active satellites flying around the Earth.

    But as of next week, the Starlink constellation - a project by US company SpaceX - will start sending batches of 60 satellites into orbit every few weeks. This will mean about 1,500 satellites have been launched by the end of next year, and by the mid-2020s there could be a fleet of 12,000.

    UK company OneWeb are aiming for about 650 satellites - but this could rise to 2,000 if there is enough customer demand.

    While Amazon have a constellation of 3,200 spacecraft planned."

    Why are astronomers worried?

    In May and November, Starlink sent 120 satellites into orbits below 500km.

    But stargazers were concerned when the spacecraft appeared as bright white flashes on their images.

    [​IMG]Image copyrightGEMINI OBSERVATORY/ NSF
    Image captionThe Gemini Observatory recorded a trail of Starlink satellites
    Dhara Patel, an astronomer at the Royal Observatory Greenwich said: "These satellites are about the size of a table, but they're very reflective, and their panels reflect lots of the Sun's light, which means that we can see them in images that we take with telescopes.

    "These satellites are also big radiowave users… and that means they can interfere with the signals that astronomers using. So it also affects radio astronomy as well."

    She warns that problem will grow as the numbers of satellites in orbit increase.

    What could this mean for research?

    Dr Clements believes the satellites could have a real impact on observations.

    "They present a foreground between what we're observing from the Earth and the rest of the Universe. So they get in the way of everything.

    "And you'll miss whatever is behind them, whether that's a nearby potentially hazardous asteroid or the most distant Quasar in the Universe."

    He said it would be particularly troublesome for telescopes taking large surveys of the sky, such as the future Large Synoptic Survey Telescope (LSST) in Chile.

    He explained: "What we want to do with LSST and other telescopes is to make a real-time motion picture of how the sky is changing...

    "Now we have these satellites that interrupt observations, and it's like someone's walking around firing a flashbulb every now and again."

    But Prof Martin Barstow, an astrophysicist from the University of Leicester said some of the problems could be fixed.

    "The numbers of satellites do sound frightening, but actually space is big - so when you superimpose them all on the sky, the density of these things is not going to be very large," he said.

    "And because the satellites have known positions, you can mitigate. A satellite is going to be a dot in an image and it might appear as a transient burst of light - but you will know about it and can remove it from the image.

    "It will cost effort and work for observatories to deal with it, but it can be done."

    For radioastronomy, however, the constellations could pose more of an issue - especially for relatively new telescopes, such as the Square Kilometre Array (SKA).

    The radio signals the satellites use will be different from the ones astronomers are looking for, but they could still interfere, said Prof Barstow.

    What do the companies involved say?

    [​IMG]Image copyrightAFP
    Image captionSpaceX want to see if they can make their satellites less bright
    SpaceX told the BBC that they were actively working with international astronomers to minimise the impact of the Starlink satellites.

    For their next launch, they are trialling a special coating that is designed to make the spacecraft less bright to see if this will help.
    ElectricUniverse and JanSz like this.
  2. ElectricUniverse

    ElectricUniverse New Member

    >SpaceX, the private spaceflight company known for reusable rockets and a giant, shiny Starship, will begin offering its own satellite internet service in 2020 ..." (space.com).

    "Musk has said SpaceX will need at least 400 Starlink satellites in orbit for "minor" broadband coverage, and 800 satellites aloft for "moderate" coverage. The initial Starlink plan called for a megaconstellation of 12,000 satellites, and SpaceX recenty filed paperwork with the International Telecommunication Union (ITU) to launch another 30,000 satellites." (space.com)

    Astronomers are naturally concerned about these new satellites' interference with their light and radio telescopes. More concerning is their eventual nnEMF impact on the biosphere (and us) once their systems are fully deployed.

    It seems the only plausible way to escape most of this electrosmog escalation powering up year after year (incl. 5G) is to live underground or build Faraday cage buildings.

    But I don't think human organisms evolved to live either underground or in artificial metal cages (which could cut us, being subtle energy beings, off from some of the cosmic energies that we know so little about).

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