Centrist, progressive, radical optimist. Geophysicist, R&D, Planetary Scientist and general nerd in Winnipeg, Canada.

troyunrau.ca (personal)

lithogen.ca (business)

  • 18 Posts
  • 119 Comments
Joined 2 years ago
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Cake day: June 12th, 2023

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  • Troy@lemmy.caOPtopics@lemmy.worldSundog in blue skies
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    4 months ago

    Sundog is on both sides, just using the steam to tone down the brightness of the sun for higher dynamic range, to allow the colours of the sundog to photograph better.

    It’s not really steam either – it’s a sign of really cold air causing the natural gas furnace exhaust to condense rapidly. The exhaust wouldn’t normally be visible.

    It’s quite cold here. Currently -20°C on the ground and certainly much colder as you go upwards.







  • The tops of the clouds on the night side of Venus are about -45°C. So it’s not actually glowing like the image implies. But in infrared, you can reprocess the colours to make a delightful image like the above.

    Well, I know you’re implying the greenhouse gases will kill us all. And that might be true, but probably not in ten years.




  • Counterpoint: Sometimes you can kickstart a community that you want to see just by consistently posting content. !science_memes@mander.xyz is my favourite example – it was essentially one person who created that entire community (and it’s since been diversifying somewhat – at least there’s traction in the comments).

    But to reinforce your point: I did !spacemusic@lemmy.ca and tried to do the same thing, but it sort of petered out. But it’s way way more niche.

    Rome wasn’t built in a day. Just engage with the content you like and build some places for content you’d like to see.


  • Excerpt from Oryx and Crake, by Margaret Atwood:

    “This is the latest,” said Crake.

    What they were looking at was a large bulblike object that seemed to be covered with stippled whitish-yellow skin. Out of it came twenty thick fleshy tubes, and at the end of each tube another bulb was growing.

    “What the hell is it?” said Jimmy.

    “Those are chickens,” said Crake. "Chicken parts. Just the breasts, on this one. They’ve got ones that specialize in drumsticks too, twelve to a growth unit.

    “But there aren’t any heads…”

    “That’s the head in the middle,” said the woman. “There’s a mouth opening at the top, they dump nutrients in there. No eyes or beak or anything, they don’t need those.”