g**********1
发帖数: 1 | 1 To put that into context, there are currently 2,100 active satellites
orbiting our planet, according to the Satellite Industry Association.
If another 12,000 are added by SpaceX alone, "it will be hundreds above the
horizon at any given time," Jonathan McDowell of the Harvard Smithsonian
Center for Astrophysics told AFP, adding that the problem would be
exacerbated at certain times of the year and certain points in the night.
The mercurial Musk responded to the debate on Twitter with contradictory
messages, pledging to look into ways to reduce the satellites' reflectivity
but also saying they would have "0% impact on advancements in astronomy" and
that telescopes should be moved into space anyway.
He also argued the work of giving "billions of economically disadvantaged
people" high-speed internet access through his network "is the greater good."
Keel said he was happy that Musk had offered to look at ways to reduce the
reflectivity of future satellites, but questioned why the issue had not been
addressed before.
If optical astronomers are concerned, then their radio astronomy colleagues,
who rely on the electromagnetic waves emitted by celestial objects to
examine phenomena such as the first image of the black hole discovered last
month, are "in near despair," he added.
Satellite operators are notorious for not doing enough to shield their "side
emissions," which can interfere with the observation bands that radio
astronomers are looking out for.
"There's every reason to join our radio astronomy colleagues in calling for
a 'before' response," said Keel.
"It's not just safeguarding our professional interests but, as far as
possible, protecting the night sky for humanity." | g**********1
发帖数: 1 | 2 这个太搞笑了。
the
reflectivity
and
【在 g**********1 的大作中提到】
: To put that into context, there are currently 2,100 active satellites
: orbiting our planet, according to the Satellite Industry Association.
: If another 12,000 are added by SpaceX alone, "it will be hundreds above the
: horizon at any given time," Jonathan McDowell of the Harvard Smithsonian
: Center for Astrophysics told AFP, adding that the problem would be
: exacerbated at certain times of the year and certain points in the night.
: The mercurial Musk responded to the debate on Twitter with contradictory
: messages, pledging to look into ways to reduce the satellites' reflectivity
: but also saying they would have "0% impact on advancements in astronomy" and
: that telescopes should be moved into space anyway.
| A****s
发帖数: 932 | |
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