GLOBE at Night

GLOBE at Night is a @NOIRLabAstro citizen-science campaign that encourages people all over the world to record the brightness of their night sky.

[GLOBE at Night @GLOBEatNight]

🌍✨ You’re invited!

Join DarkSky for Under One Sky 2026, a global conference organized by @IDADarkSky, bringing together a growing movement to protect dark skies and the nighttime environment.

🔗 https://t.co/d7Ru1VTv4N.

[GLOBE at Night @GLOBEatNight]

🦢 There’s a swan flying through the September sky.

From 2–11 September, Globe at Night is inviting citizen scientists around the world to look up and help measure light pollution. Submit your data at https://t.co/WQhzhQ1z52 🌎✨

[GLOBE at Night @GLOBEatNight]

When was the last time you saw the Milky Way from your city? 🌌
Light pollution is making that harder and harder.

The good news? We can all help. 💡
Light on the ground, not the sky.

Watch our reel to learn how.

#NOIRLab #DarkSkies #LightPollution #Astronomy

[GLOBE at Night @GLOBEatNight]

Did you know that artificial light at night can disrupt sleep, contributing to headaches and health issues? 🌃

Better lighting at night isn’t just about seeing the stars. It’s about healthier nights for people.

🔗 Learn more https://t.co/fbd9aTZUNn #GaN20
📷NOIRLab/NSF/AURA

[GLOBE at Night @GLOBEatNight]

📷 NASA Earth Observatory/VIIRS Day Night Band and MODIS Blue Marble data/Jesse Allen & Robert Simmon
Instrument: Suomi NPP - VIIRS

[GLOBE at Night @GLOBEatNight]

Energy is a precious resource and artificial light at night is not the best way to use it. How can we keep the light from shining upwards, and instead, keep it down where we need it? 🌃 Read more at https://t.co/fbd9aTZUNn #GaN20

[GLOBE at Night @GLOBEatNight]

It’s time for the July Globe at Night campaign! 🌙✨ Go outside after sunset and find this month’s constellations. Then compare what you see with our star charts and submit your observation 🌍📲 https://t.co/Riryjv1LFb

📸: E. Slawik/NOIRLab/NSF/AURA/M. Zamani

[GLOBE at Night @GLOBEatNight]

How do we know the skies above NSF @KittPeakNatObs are among the darkest? We measure!

🌌At Kitt Peak, 3 Sky Quality Meters monitor sky brightness every night. In the first picture, one of these Sky Quality Meters points toward Tucson.

📷KPNO/NOIRLab/NSF/AURA/W. Liu

[GLOBE at Night @GLOBEatNight]

Artificial lights attract insects, trapping them in endless loops. Exhausted, these pollinators can’t feed or reproduce.

Fewer insects means fewer plants and risks to our food supply. 🌾

https://t.co/fbd9aTZUNn

📷KPNO/NOIRLab/NSF/AURA/J. Ramon-Sauberan

[GLOBE at Night @GLOBEatNight]

It’s time for the June Globe at Night campaign! 🌙✨ Go outside after sunset and find this month’s constellations. Then compare what you see with the star charts and submit your observation 🌍📲 https://t.co/fbd9aTZUNn

📷NOIRLab/NSF/AURA

[GLOBE at Night @GLOBEatNight]

When the night gets brighter, wildlife pays the price.

Light pollution can:
🧭 Confuse migration
🦊 Shift predator–prey relationships
🌱 Affect plant and animal physiology
⏰ Disrupt natural rhythms that guide life on Earth

📷International Gemini Observatory/NOIRLab/NSF/AURA

[GLOBE at Night @GLOBEatNight]

💡 We’re highlighting the 5 Principles for Responsible Lighting:

• Use light only when needed
• Target it
• Keep it low
• Control it (timers)
• Choose warm-colored lights

Small changes can reduce light pollution and protect the night sky. 🌙

📷Dark Sky International

[GLOBE at Night @GLOBEatNight]

For 20 years, we’ve invited people worldwide to measure light pollution 🌌 This month: learn your constellations ✨ What you can (and can’t) see in the night sky helps track how light pollution is changing it.

🔗https://t.co/U78G9E2A5q

📷KPNO/NOIRLab/NSF/AURA/B. Tafreshi

[NOIRLab @NOIRLabAstro]

This isn’t a cloud in the sky. It’s the Milky Way, seen from Cerro Pachón in Chile (with a meteor passing through!).

Behind the @Geminiobs South telescope, you can see NSF–DOE @VRubinObs.

📸International Gemini Observatory/NOIRLab/NSF/AURA/P. Horálek

[GLOBE at Night @GLOBEatNight]

Happy 20th birthday to @GlobeatNight!✨

To celebrate, people across the globe are sharing the important message of protecting and restoring our starry night skies. Join our fight against light pollution by submitting observations to https://t.co/Riryjv1LFb. 🌎

[GLOBE at Night @GLOBEatNight]

Where do our Globe at Night data points come from?
Literally everywhere 🌍✨
Even Antarctica! ❄️

Yes, this year we’ve received observations not only from Antarctica, but also from remote and far-reaching places like North Macedonia and Iceland… and we love seeing it!

[NOIRLab @NOIRLabAstro]

BREAKING: The largest 3D map of the Universe is now complete 🌌

Last night @desisurvey, mounted on the Nicholas U/ Mayall 4 meter telescope at @KittPeakNatObs, finished its 5-year survey of the cosmos, mapping 47M+ galaxies and quasars.

🔗https://t.co/ypVX7edRqW

[GLOBE at Night @GLOBEatNight]

Want to know our top-performing country for @GlobeatNight for 2026?

So far in 2026, our biggest contributors are...

🥇 United States 🇺🇸
🥈Japan 🇯🇵
🥉Australia 🇦🇺

#DarkSkiesWeek

[GLOBE at Night @GLOBEatNight]

20 years of dark sky data didn’t come out of nowhere, it came from you! (Thank you, by the way) Globe at Night couldn’t exist without you. 🥰 If you’re wondering, “what exactly is Globe at Night?” then swipe to learn!

#DarkSkyWeek

[GLOBE at Night @GLOBEatNight]

🌙✨ It’s time for the April Globe at Night campaign!

Head outside after sunset and find this month’s constellation, Leo (you can learn how to spot it at https://t.co/Riryjv1LFb).

📲 Get started: https://t.co/Riryjv1LFb