We take it for granted on earth, but liquid water is in short supply in the rest of the solar system. Travel to unusual places in the search for water (which is actually the search for life), including a moon of Saturn that is shooting it into space.

Gravity sucks, but where would we be without it? Join scientists as they work to detect gravity waves in space and map the gravity patterns of the moon for the first time.

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Your home for exploring science and the cosmos 🪐

#space #science #ufo #aliens

Explore SETI’s history and modern methods—from radio and laser searches to Dyson spheres and technosignatures—and how we might detect alien civilizations across the galaxy.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age
Check out Gods & Monsters:
https://nebula.tv/curiousarchive/gods-and-monsters?ref=isaacarthur

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Credits:
SETI Explained – How We Search for Alien Civilizations
Written, Produced & Narrated by: Isaac Arthur
Graphics from Ken York, Sergio Botero
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro
0:50 Why SETI Is Harder Than It Sounds
2:50 The Birth of SETI
6:15 Why Radio SETI Made Sense—and Why It Didn’t Work
9:34 The Shift in Perspective
10:55 Laser SETI
13:52 Dysonian SETI
16:59 Signals, Artifacts, and Echoes
19:09 Recognition Is Harder Than Detection
21:30 Gods & Monsters
22:30 What SETI Looks Like Today
25:18 SETI as a Mirror, Not a Phone Call

Explore SETI’s history and modern methods—from radio and laser searches to Dyson spheres and technosignatures—and how we might detect alien civilizations across the galaxy.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age
Check out Gods & Monsters:
https://nebula.tv/curiousarchive/gods-and-monsters?ref=isaacarthur

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
🌐 Visit our Website: http://www.isaacarthur.net
❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
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🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
💬 SFIA Discord Server: https://discord.gg/53GAShE
Credits:
SETI Explained – How We Search for Alien Civilizations
Written, Produced & Narrated by: Isaac Arthur
Graphics from Ken York, Sergio Botero
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro
0:50 Why SETI Is Harder Than It Sounds
2:50 The Birth of SETI
6:15 Why Radio SETI Made Sense—and Why It Didn’t Work
9:34 The Shift in Perspective
10:55 Laser SETI
13:52 Dysonian SETI
16:59 Signals, Artifacts, and Echoes
19:09 Recognition Is Harder Than Detection
21:30 Gods & Monsters
22:30 What SETI Looks Like Today
25:18 SETI as a Mirror, Not a Phone Call

Join Isaac Arthur for a live discussion on the future of humanity and the technologies that will get us there! 🌌 This month, we are diving deep into your questions on space megastructures, interstellar travel, and the long-term trajectory of our civilization. 🔭

Bring your questions live as we explore:

Space Megastructures 🏗️: The engineering and physics of O’Neill Cylinders and Dyson Swarms.

Colonization 🛸: Strategies for settling the solar system and beyond.

The Fermi Paradox 👽: Analyzing the silence of the cosmos and what it means for our future.

Technological Advancement 🤖: How AI and fusion power could reshape the 21st century.

📅 Stream Schedule: Tuesday, February 17, 2026, at 8:00 PM EST.

🚀 Join this channel to get access to perks: https://www.youtube.com/channel/UCZFipeZtQM5CKUjx6grh54g/join
🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
🌐 Visit our Website: http://www.isaacarthur.net

🎬 Join Nebula: https://go.nebula.tv/isaacarthur
❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
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💬 SFIA Discord Server: https://discord.gg/53GAShE

When the Earth beneath you moves, it can feel like hell is breaking loose. Earthquakes can level cities and spark other disasters from tsunamis to volcanic eruptions. Discover the seismic forces behind some of the world’s most devastating earthquakes from California to Haiti to New Zealand. Follow scientists uncovering what geologic hotspots are responsible for shaking the planet’s crust. New technology could help us predict the next Big One and protect us from their deadly consequences.

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Your home for exploring science and the cosmos 🪐

#space #science #ufo #aliens

Subscribe for more videos! ☄️ https://www.youtube.com/@SpaceRip

Find us on social media!

X: https://ow.ly/FZBj50StcJb
FB: https://ow.ly/1J7y50StcFW
TikTok: https://ow.ly/XmLR50StcKY

Your home for exploring science and the cosmos 🪐

#space #science #ufo #aliens

Perhaps the most calamitous of the effects of climate change is the melting permafrost and resulting rising sea levels. The Arctic ice is rapidly disappearing, forever. Already, some coastal areas are in danger of disappearing in the next 10 years. This episode tells the story of citizens most urgently affected by the melt in Alaska, faced with becoming climate refugees.

As the earth heats up, the land under our feet is compromised. A warmer earth can lead to a deadly domino effect: an increase in occurrence, frequency and intensity of sinkholes and landslides. More voluminous rainfall leads to massive mudslides and debris flows, wiping out entire communities. This episode tells the story of devastating events in California and British Columbia, Canada.

#extremeweather #climatechange #documentary

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TikTok: https://ow.ly/XmLR50StcKY

Your home for exploring science and the cosmos 🪐

#space #science #ufo #aliens

Subscribe for more videos! ☄️ https://www.youtube.com/@SpaceRip

Find us on social media!

X: https://ow.ly/FZBj50StcJb
FB: https://ow.ly/1J7y50StcFW
TikTok: https://ow.ly/XmLR50StcKY

Your home for exploring science and the cosmos 🪐

#space #science #ufo #aliens

What if the oldest aliens in the galaxy are not empires, but nomads? We explore wandering fleets, deep-time survival, and civilizations without a homeworld.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur
Watch my exclusive video Surviving a New Ice Age: https://nebula.tv/videos/isaacarthur-surviving-a-new-ice-age
Check out Gods & Monsters:
https://nebula.tv/curiousarchive/gods-and-monsters?ref=isaacarthur

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall.com/
🌐 Visit our Website: http://www.isaacarthur.net
❤️ Support us on Patreon: https://www.patreon.com/IsaacArthur
⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-arthur
👥 Facebook Group: https://www.facebook.com/groups/1583992725237264/
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🐦 Follow on Twitter / X: https://twitter.com/Isaac_A_Arthur
💬 SFIA Discord Server: https://discord.gg/53GAShE
Credits:
Nomadic Aliens – Cultures That Wander the Galaxy
Written, Produced & Narrated by: Isaac Arthur
Music Courtesy of Chris Zabriskie & Stellardrone
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro
2:44 The Ship Is the World
10:49 The Nomadic Group Is Not the Species
19:15 Accretion, Not Assimilation
25:53 When Nomads Stop, and When They Refuse To
28:32 Gods & Monsters
29:32 The Oldest Civilizations May Be the Ones Still Moving