Astronomy for Equity, Blue Marble Space, DarkSky International Board, UCLA medical research (retired). Previous: Founder, Astronomers Without Borders.

Joined January 2010
317 Photos and videos
I knew it! He’s consulting with aliens.
Trump’ın yanında yer alan garip kıyafetli kişilerin yer aldığı fotoğraf dünyada gündem oldu. Görüntü sonrası en çok sorulan soru ise: “Yanındakiler kim?”
213
Same here. On many visits starting in 1999. I’ve taken tours of Americans there. I’ll see friends in Yerevan at a conference next week. I was going to go to Iran but I’ve been advised against it. Everything every US government has done has done the opposite of what they wanted.
On my trips to Iran, I've seen how many ordinary Iranians admire the US and despise their own regime. But they're also proud of their ancient civilization and independence, and Trump posts like this bolster the regime narrative. Trump offers a lesson in how not to conduct diplomacy.
44
Mike Simmons retweeted
🦉 Find your night side. 🌃 Help map Earth's nighttime glow from space and track light pollution by locating images from astronauts on the International @Space_Station. 📍Pick your citizen science challenge on the app: lostatnight.org/
1
15
40
6,528
Mike Simmons retweeted
Earth is constantly immersed in a stream of charged particles flowing outward from the Sun: the solar wind. When it encounters Earth’s magnetic field, it creates a massive shock wave in space that can be chaotic or calm. Help scientists understand why as part of NASA's new Shock Detectives citizen science project: go.nasa.gov/3RyRFqt
22
128
559
21,999
Mike Simmons retweeted
📌 New piece out today in Foreign Policy. For 47 years, analysts and policymakers have been asking what the Islamic Republic wants. I argue that's the wrong frame entirely. Iran's strategic instincts — its obsession with deterrence, sovereignty, and global (not regional) projection — are five centuries old. They survived the Safavids, the Qajars, the Pahlavis. They will survive whatever comes next. The 2026 war, Hormuz, the nuclear file — none of it makes sense unless you ask the right question. Read here 👇 foreignpolicy.com/2026/05/19…
11
89
201
20,671
Mike Simmons retweeted
💡 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
1
1
53
This is exactly why I’ve been saying since my first of many visits to Iran in 1999. Same in Iraq in 2003. Sanctions weaken the people and strengthen the dictators’ stranglehold on power. Give the people back the economic power and western economic influence inside the country.
The BBC asked me if a US-Iran deal would betray the Iranian people. I pushed back hard: The question assumes that getting bombed helped the Iranian people. Nor has that been true in Ira, Afghanistan etc. On the contrary, if sanctions are lifted, the Iranian people can breathe once more. Over time, Iranian society will grow stronger and enable the Iranian people to do what only they can do: Change Iran in the right direction, from the inside, by themselves, for themselves.
1
46
Mike Simmons retweeted
Today is World Migratory Bird Day! Millions of birds travel incredible distances each year, connecting ecosystems across continents. These journeys are becoming more challenging due to habitat loss, light pollution & building collisions. You can help: cincinnatizoo.org/conservati…
4
77
383
9,519
Mike Simmons retweeted
It's Songbird Welcome Home Week and tonight is going to be a HUGE night for migration. Most birds migrate at night. City lights can disorient birds and interfere with navigation. Turn your non-essential lights off by 11pm to help your feathered friends along their way.
1
76
258
13,309
Thank you @CincinnatiZoo!
Replying to @CincinnatiZoo
Reduce nighttime lighting by only using essential lighting that is directed towards the ground. Consider motion activated lights that only turn on when needed and close blinds and curtains during evening hours.
21
Mike Simmons retweeted
🌙✨ 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 globeatnight.org). 📲 Get started: globeatnight.org
2
5
81
Mike Simmons retweeted
“Home 🌍” Artemis II painting
42
10,388
87,251
744,580
Mike Simmons retweeted
Why is the Milky Way so vibrant over NSF @KittPeakNatObs, but not over your backyard? Light pollution. Submit a 5 sec video by 10 April sharing your love for dark skies to be included in a compilation debuting during International Dark Sky Week. 🔗 bit.ly/4djVJE0
2
7
83
It’s always great talking with Pamela, with an audience or not. You can watch the recording if you missed it.
We're getting ready to go live with an important episode of After Hours. Grab a beer and your empathy as we prepare to pull on your heartstrings for #STEM youtube.com/live/kahXYb_PILs…
1
27
I’ve been here many times. Everything seems so normal. I was hoping to be back in Iran now for Nowrouz. 😢
Scenes from Northern Tehran‘s Tajrish Square ahead of Nowrouz
1
70
This was exactly my experience during seven visits to Iran traveling around the country. And that of Americans I took there. I hoped to be there for Norouz (Persian New Year) this month. I found similar people in Pakistan in Nov and then realized they are also a Persian culture.
I lived and traveled in Iran for months. In Tehran I lived with the family of a retired bank worker who saw me looking for housing. I roomed with his son for months, ate all my meals with them, and they never accepted any money. Once I was sick and throwing up and they all came into the bathroom and the dad stroked my head while I barfed and told me “Aybi nadare” (no shame, it’s ok). I traveled around most of the country by plane, train, bus, shared taxi, etc. Eventually I stopped booking hotels because I’d always meet people on the train, bus etc who’d insist I stay with them. The family of Iran/Iraq war vets from Yazd who took me to Taft for bbq in the mountains. The taxi driver from Rasht who made a bed for me on the floor of his tiny apartment because all the hotels were full. The only time a police officer talked to me was once to make sure I was ok. I never felt in any danger day or night. The land of Iran is as incredibly diverse as its people. There are mountainous rain forests and desert salt flats. I met among the most liberal and most conservative people there, and everything in between. Everyone was so kind it makes me cry with shame.
110
Mike Simmons retweeted
Frank White, author of The #OverviewEffect, is one of the humans most deserving of a space flight. Join me and 20 astronauts, & hundreds of others in supporting the fundraise for his seat! moondao.com/overview #SendFranktoSpace youtu.be/lvLnI0cc57A
2
12
16
4,553
Mike Simmons retweeted
Researchers, students & science communicators in Botswana 🇧🇼 Join the Science Communication in the Global South workshop on 21 March 2026. 📍Hybrid: Kasane Online Batswana participants are especially encouraged to join. bricsastronomy.org/communica… #SciComm #Botswana #STEM
1
3
4
126
Great explainer of the geographic diversity of Iran, one of the reasons I love traveling there. There are also very different cultures and a history of almost 3000 years, including various invading empires. To me, it is the most fascinating country in the world to visit.
Iran's Geography Explained 🇮🇷🌏 © urban_atlas_quest (IG)
55