The International Astronomical Union (IAU) warned that the growing number of satellites in Earth orbit could significantly worsen conditions for astronomical observations.
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Based on available data on plans for the formation of satellite constellations, scientists built a model of the future state of near-Earth orbit, and they found that the large satellite constellations being formed will seriously affect observations using modern telescopes.
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They estimated that up to 30% of 30-second images during the twilight hours will be affected.
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A special danger is posed by megaconstellations of satellites, like Starlink, a brainchild of SpaceX and Elon Musk.
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The first 122 satellites launched by Starlink are not only brighter than most of the stars humans can see, but they also move quickly across the sky, leaving trails that pollute astronomers' data.
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In addition, these satellites actively use radio waves, which means that they interfere with the signals used by radio astronomers.
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The bright satellites obscure everything behind them, whether it is a potentially dangerous asteroid or the most distant quasar.
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The biggest challenge is posed to telescopes designed to look at large swaths of space, like the Large Synoptic Research Telescope (LSST) in Chile.
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In short, the new satellite will have a negative impact on the development of ground-based astronomy, radio, and optics, and it will require the diversion of human and financial resources from basic research to mitigation measures.
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Astronomers named several options for reducing the satellites’ impact.
Experts suggested, among other things, “darken them”.
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“Keep them at a low altitude,” and “direct them so that they reflect less sunlight” were also listed.
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However, the main option on the list was “don't launch them”.
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To resolve this problem, the IAU will work with government space agencies and private companies, as well as with the UN.
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Warning: these questons and answers are not all representative of the way questions will be asked and answered in the pilot, because some questions are compound and some answers do not include citations.

Q: What danger of the growing number of satellites in Earth orbit did the International Astronomical Union warn the international community about?
A: That the satellites could significantly worsen conditions for astronomical observations

Q: According to scientists, what process will the large satellite constellations seriously affect?
A: Observations using modern telescopes 

Q: What brand of satellites pose a special danger?
A: Starlink

Q: What company manufactures Starlink satellites?
A: SpaceX 

Q: Who owns SpaceX?
A: Elon Musk

Q: What characteristics did the first 122 satellites launched by Starlink have?
A: They were brighter than most of the stars humans can see

Q: What characteristics did the first 122 satellites launched by Starlink have?
A: They moved quickly across the sky

Q: How do Starlink satellites interfere with the work of radio astronomers?
A: These satellites actively use radio waves

Q: What object could Starlink satellites potentially obscure?
A: A quasar

Q: What object could Starlink satellites potentially obscure?
A: An asteroid

Q: What kind of telescopes do  Starlink satellites pose the biggest challenge to?
A: Telescopes designed to look at large swaths of spaceA: Telescopes like the Large Synoptic Research Telescope

Q: What branch of science will the new satellites have a negative impact on?
A: Ground-based astronomy

Q: What branch of science will the new satellites have a negative impact on?
A: Radio

Q: What branch of science will the new satellites have a negative impact on?
A: Optics

Q: What measure will be required to combat the negative effect of the new satellites?
A: The diversion of human and financial resources from basic research to mitigation measures

Q: What option for reducing the satellites’ impact did experts suggest?
A: Darken the satellites

Q: What option for reducing the satellites’ impact did experts suggest?
A: Keep the satellites at a low altitude

Q: What option for reducing the satellites’ impact did experts suggest?
A: Direct the satellites so that they reflect less sunlight

Q: What option for reducing the satellites’ impact did experts suggest?
A: Not to launch the satellites

Q: What organization will the International Astronomical Union work with to resolve the satellites’ problem?
A: Government space agencies

Q: What organization will the International Astronomical Union work with to resolve the satellites’ problem?
A: Private companies

Q: What organization will the International Astronomical Union work with to resolve the satellites’ problem?
A: The UN