I grew up in a rural place where we could see the texture of the milky way just stepping outside at night—it’s been fun taking friends who grew up in cities on wilderness backpacking trips and sitting out to watch the stars. There’s an awe to a true night sky that I think has real psychological impact.
I did also have a cool experience, deep in the backcountry at a high elevation camp some years ago: we went to sleep in a gale, the tent flapping all around, with a cloudy sky. I thought we’d get a big storm, but I woke up hot at 3am, the air totally still. I slid out of the tent and the sky was completely crystal clear. An incredible spread of stars. I watched for a while and noticed a reddish glow on the horizon. We were so far out and it wrapped around in all directions, so I knew it couldn’t possibly have been a town, but I was puzzled. I learned about airglow when we got out of the woods: <a href="https://en.wikipedia.org/wiki/Airglow" rel="nofollow">https://en.wikipedia.org/wiki/Airglow
Outside of a few places like the Himalayas or Australia isn't not possible to see the darkness everyone lived in until street lighting.
This is the most accurate map and it still under reports light pollution under 21.5sqm <a href="https://www.darkskysites.com/" rel="nofollow">https://www.darkskysites.com/
Worse satellite constilations may make it impossible to have a dark sky anywhere: <a href="https://arxiv.org/html/2604.09427v1" rel="nofollow">https://arxiv.org/html/2604.09427v1
Led lights have caused such a massive increase in light pollution, let alone the effects on humans due to the blue spike, that they should be banned outright.
This simply isn't true. I do astrophotography, including traveling to dark skies so I can do wideband and not just narrowband. Plenty on the narrowband captures at home in b9 skies, too.
The long exposures pick up far more of them than I can see why my eyes, but I still end up seeing plenty of starlink satellites just looking up, even at 2 or 3 in the morning.
Some googling indicates that they're high enough that light refracting across the atmosphere will still hit them, and yeah, the moon, and also just some reflections from earth and airglow.
I've not done any real research here - it didn't seem odd to me that I could see them, so I haven't done any investigation at all here until these comments.
macNchz · · focus · HN ↗
I did also have a cool experience, deep in the backcountry at a high elevation camp some years ago: we went to sleep in a gale, the tent flapping all around, with a cloudy sky. I thought we’d get a big storm, but I woke up hot at 3am, the air totally still. I slid out of the tent and the sky was completely crystal clear. An incredible spread of stars. I watched for a while and noticed a reddish glow on the horizon. We were so far out and it wrapped around in all directions, so I knew it couldn’t possibly have been a town, but I was puzzled. I learned about airglow when we got out of the woods: <a href="https://en.wikipedia.org/wiki/Airglow" rel="nofollow">https://en.wikipedia.org/wiki/Airglow
noosphr · · focus · HN ↗
This is the most accurate map and it still under reports light pollution under 21.5sqm <a href="https://www.darkskysites.com/" rel="nofollow">https://www.darkskysites.com/
Worse satellite constilations may make it impossible to have a dark sky anywhere: <a href="https://arxiv.org/html/2604.09427v1" rel="nofollow">https://arxiv.org/html/2604.09427v1
Led lights have caused such a massive increase in light pollution, let alone the effects on humans due to the blue spike, that they should be banned outright.
wolvoleo · · focus · HN ↗
Because they're so close to the earth's surface it doesn't happen all night because they'll be in darkness too.
cthalupa · · focus · HN ↗
The long exposures pick up far more of them than I can see why my eyes, but I still end up seeing plenty of starlink satellites just looking up, even at 2 or 3 in the morning.
wolvoleo · · focus · HN ↗
It wouldn't be possible for them to get direct sunlight that low during the middle of the night. Unless you are at very high latitudes in summer.
cthalupa · · focus · HN ↗
I've not done any real research here - it didn't seem odd to me that I could see them, so I haven't done any investigation at all here until these comments.