Christopher Kyba

@skyglowberlin

Public Scientist. Light pollution researcher at (tweeting personal opinions). Follow me for cool nighttime photos, from ground, air, and space!

Potsdam, Germany
userpage.fu-berlin.de/~kyba/
Joined June 2011
1,064 Photos and videos Photos and videos

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  1. Pinned Tweet
    26 Jan 2015

    Lighting accounts for a big chunk of municipal budgets. How much could your city save?

    6 replies 92 retweets 98 likes
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  2. 57 minutes ago

    One person told me they weren't able to download the abstract template for , and also couldn't access the EasyChair page. But both work for me!? Is anyone else having problems? Here's our page:

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  3. 2 hours ago

    That's an eyesore ! If your screen isn't dimmed at night and someone gets into a traffic accident nearby, a case could probably be made that your bad lighting was responsible.

    0:14
    "Maddening": despite operators' pledges to improve, oculus flashes intrusive light overnight, disturbing residents' sleep WARNING: flashing images in video below
    1 reply 1 retweet 1 like
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  4. 2 hours ago

    Quote from the abstract: "Recommendations for the amount of light do not appear to be well-founded in robust empirical evidence" Link to the paper:

    2 replies 1 like
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  5. 2 hours ago

    Science journalists: here's a story you seem to have missed. A review of street lighting recommendations found that they aren't based in science. That suggests we're wasting a huge amount of energy, and making more than necessary. (1/2)

    1 reply 1 retweet
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  6. Retweeted
    17 hours ago

    What is the answer! Please help me!

    212 replies 1,292 retweets 4,317 likes
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  7. Retweeted
    4 hours ago

    Ursa Major - our most well-known constellation - but can you name any stars in it? I'll be diving into its stories and stars and galaxies this Sunday 9pm ET on for Constellation Stories.

    1 reply 1 retweet 2 likes
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  8. Retweeted
    8 hours ago

    Vowel World Championships! Vote in the second round of !

    First match of round 2 in ! Winner of the first match, surprise upset #16 seed /ɯ/ (high back unrounded vowel, as in the u in Japanese "sushi") vs Winner of the eighth match, #9 seed /y/ (high front rounded vowel, as in German "über", French "tu") It's 😬 vs 😮
    Show this thread
    2 retweets
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  9. Retweeted
    8 hours ago

    White-legged damselfly is doing great in the Netherlands. For trends of Dutch dragonflies and butterflies see

    1 retweet 1 like
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  10. Retweeted
    Mar 31

    Our paper is out! colony attendance under for

    3 retweets 6 likes
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  11. Retweeted
    10 hours ago

    I have no words for this... Ten Denali wolves killed by man on snowscooter with assault riffle. All part of the hunting season?

    2 retweets 1 like
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  12. Retweeted
    18 hours ago

    Is light pollution getting better or worse? | Nature Astronomy [by ]

    1 reply 2 retweets 9 likes
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  13. 21 hours ago

    In the first 4 days of we've had a foot of snow, sunny days with +20C, and now a thunderstorm has rolled in...

    2 likes
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  14. Apr 4

    Only 6% of US light-related lawsuits are brought against municipalities and other government entities for allegations of insufficient lighting. In 49% of cases the suit is due to the municipality allegedly installing too much light.

    7 retweets 12 likes
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  15. Apr 4

    The is looking for new members for its technical committee: You should have expertise in at least one facet of outdoor lighting or light pollution and be able to exercise independent judgment regardless of employment and/or affiliations.

    3 retweets 5 likes
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  16. Retweeted
    Apr 4

    I work with big predators. I give them their space, I respect them, and I always keep in mind that they have the ability to kill me. As someone who studies predator behaviour, I’m glad I had to knowledge of what to do when a crocodile bit into my calf last night and dragged me.

    136 replies 360 retweets 1,232 likes
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  17. Retweeted
    Apr 4
    Replying to

    some people feel tough, when they shoot predators. Real badasses stay calm during a crocodile attack and defend the crocodile afterwards. you have my utmost respect!

    1 reply 3 retweets 19 likes
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  18. Apr 4

    New review article: Dark Matters: Challenges of Nocturnal Communication Between Plants and Animals in Delivery of Pollination Services

    7 retweets 7 likes
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  19. Retweeted
    Apr 3

    Wow, you are making the frontpage of today, with

    1 reply 4 retweets 4 likes
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  20. Retweeted
    Apr 2

    Chipmunk finds great hiding spot

    65 replies 1,156 retweets 3,144 likes
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  21. Retweeted
    Apr 3

    Jupiter finally visible! Day 13 of civil twilight at the South Pole since the equinox sunset. The Sun is now 5° below the horizon, the brightest stars & planets have become visible to the naked eye. Here’s the Moon, with Jupiter at the top of this photo by Robert Schwarz

    1 reply 166 retweets 393 likes
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