The comet's tail is bent! (Comet C/2025 A6 Lemmon)
Also, we are under attack from thousands of Starlink satellites. They pollute the night sky.
These are two versions of the same stack of images. (165 exposures, each only 2.5 seconds long)
The camera was on a fixed tripod, 135mm telephoto lens.
The first image stack uses an algorithm that rejects most satellite trails, but it makes most of the stars look funny with tiny red circles around them. (But I did a decent job flattening the night sky brightness so that I could boost contrast aggressively. The tail stretches across the frame.)
The second image stack is just a simple average of all pixel values at a given location in the sky. This makes the stars look 'natural', but now we see many satellite trails. Keep in mind this is an average of 165 images. …
The comet's tail is bent! (Comet C/2025 A6 Lemmon)
Also, we are under attack from thousands of Starlink satellites. They pollute the night sky.
These are two versions of the same stack of images. (165 exposures, each only 2.5 seconds long)
The camera was on a fixed tripod, 135mm telephoto lens.
The first image stack uses an algorithm that rejects most satellite trails, but it makes most of the stars look funny with tiny red circles around them. (But I did a decent job flattening the night sky brightness so that I could boost contrast aggressively. The tail stretches across the frame.)
The second image stack is just a simple average of all pixel values at a given location in the sky. This makes the stars look 'natural', but now we see many satellite trails. Keep in mind this is an average of 165 images. If a satellite trail is visible in the final stack, on the individual image that captured it...it's 165 times brighter. (I was clumsy in flattening the sky, so when I boosted contrast, the sky background looks uneven and lumpy.)
The 3rd image is a single exposure as twilight was getting brighter. It gives an idea of how bright the satellite trails are compared to the comet and stars. Every single image of my stack of 165 images has satellite trails.
4th graphic is a finder chart for this comet in the evening sky. If your cell phone is not old, it will capture the brighter parts of the comet. Prop it on a stationary object.
Please share and boost widely, especially the finder chart.
Teens Who Sued Hawai‘i Say State’s Climate Plan For Aviation Doesn’t Fly
Interisland flights are Hawaiʻi’s biggest transportation carbon producer, making up more than half of all emissions related to civilian travel in the state
"The rapid deorbiting of #Starlink#satellites has raised alarms, particularly as Elon Musk’s SpaceX constellation continues to grow. With up to four satellites falling to Earth daily in 2025, experts, including astronomer @planet4589, are warning about both the immediate and long-term impacts. While most of these satellites burn up safely in the #atmosphere, concerns about #SpaceDebris and atmospheric #pollution are mounting."
I don’t care who points this out, but surely the time has come to call an end to fish farming in our lochs when dangerous levels of pesticides are necessary to maintain an illusion of health in the population?
I note that this is a Norwegian company. They are not allowed to pollute Norwegian waters to the same extent as our Scottish ones.
Earth’s nastiest and costliest wildfires are blazing four times more often now than they did in the 1980s because of human-caused climate change and people moving closer to wildlands, a new study found.
What materials do you remember seeing food, drink, and other things packaged in before mylar and other plastics took over?
Would you start buy things packaged in more sustainable old methods if it were more widely available, even if it cost a few cents more? #Sustainability#History#Pollution
#Trump#EPA tells scientists to stop publishing studies, employees say Staff from the EPA’s Office of #Water were summoned to a “town hall” meeting this week & told to pause the publication of most #research, pending a review.
Joseph Romm is a senior research fellow at the Center for Science, Sustainability, and Media at the University of Pennsylvania. And he’s a Swiftie who co-hosts a podcast in which he and his daughter analyze the storytelling techniques Taylor Swift uses in her songs.
He suggests using stories to communicate about climate change because they’re memorable and they engage people on an emotional level