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267
Videos
1.1M
Subscribers
111.6M
Total Views
Feb 18, 2016
Joined YouTube
Cool Worlds Episode Catalog
Explore every episode. Find what matters.

May 1, 2026
25:15
Why We Might NEVER Detect Alien Life
154.5K7.7K1.2K

Apr 3, 2026
7:19
My Thoughts on Artemis II
87.2K7.5K977

Jan 26, 2026
2:04
Humanity is Feral
53.8K1.7K248

Oct 6, 2025
2:54
Mars Rover Snaps 3I/ATLAS?!
102.4K3.2K305

Aug 23, 2025
24:19
Could 3I/ATLAS Be Technological?
308.8K13.1K3K

Jun 29, 2025
23:37
Can We Save Ourselves?
174K6.9K729

May 31, 2025
23:24
Why I Don’t Buy The Dark Forest Hypothesis
896.7K36.3K6.9K

Apr 11, 2025
12:56
In Defense of Science
86.2K7.7K2.2K

Dec 21, 2024
20:03
Could A.I. Replace Scientists?
220.1K10K1.6K

Oct 27, 2024
20:22
The Odds of Life - THIS CHANGED MY MIND
697.4K25.9K3.5K

Oct 24, 2024
8:08
IT'S HAPPENING!! RIGHT NOW!
195.8K17.3K1.6K

Sep 7, 2024
1:00
SHORT"It is folly"
18.9K1.3K86

Jun 21, 2024
0:59
SHORTJWST Will Look for Exomoons
36.5K3.3K133

Jun 2, 2024
0:59
SHORTRecord Breaking Galaxy Discovered
229.4K14.8K493

May 25, 2024
21:27
NASA's in Trouble
238.2K11.1K2.1K

Apr 20, 2024
22:04
Why Black Holes Break The Universe
1.6M36.9K2.3K

Mar 17, 2024
16:44
How to Destroy a Nuke Anywhere on Earth
312.5K11.7K1.1K

Feb 29, 2024
10:00
Some Good News
140.7K13.1K1.7K

Feb 18, 2024
16:52
The Star That Shouldn't Exist
777K29.2K2.2K

Jan 6, 2024
19:48
Outlasting the Universe
1.1M47.2K4K

Nov 11, 2023
25:23
What the Hell Happened to Venus?
1.2M39.2K2.6K

Oct 8, 2023
16:45
The Ambiguity Problem
213.8K9.1K1.1K

Aug 24, 2023
18:30
Why Exomoons Are So Important
169.8K8.4K515

Jul 10, 2023
28:12
Are UFOs Legitimate Science?
297.1K11.7K2.6K

Jun 10, 2023
28:35
The Fate of Our Sun
509K15K1.2K

May 10, 2023
8:12
Some Bad News
265.9K16.6K2K

Jan 27, 2023
15:33
Earth Over The Next Billion Years
1.9M43.4K2.7K

Dec 17, 2022
24:43
The “Crisis in Cosmology” EXPLAINED
617.9K21.7K1.5K

Dec 13, 2022
0:41
SHORTNuclear Fusion Breakthrough!
134.2K8.1K314

Nov 5, 2022
26:20
Is Messaging Aliens a Bad Idea?
646.2K20.6K4.5K

Oct 8, 2022
21:59
Can We Engineer The Sun?
270.5K13.6K1.1K

Aug 14, 2022
32:13
Will We Run Out Of Lithium?
426.1K13.9K2.3K

Jul 14, 2022
15:31
Can Moons Have Moons?
524.1K21.2K2.6K

Jun 18, 2022
27:30
The Wow! Signal After 45 Years
1.6M40.5K3.5K

May 27, 2022
23:22
Why Starship Could Transform Astronomy
783.5K20.6K1.8K

Jan 8, 2022
0:30
SHORTLunar Hut is Just a Rock
71.5K4.2K373

Dec 11, 2021
38:47
Why We Haven't Found Any Earth-Like Planets
964.9K19.9K1.9K

Nov 12, 2021
22:58
Is the Solar System Special?
558.8K19.5K1.4K

Oct 8, 2021
27:48
Are Alien "Lurkers" Watching You?
1.7M33.2K4.5K

Sep 15, 2021
20:06
The Star That Can't Exist
1.3M42.9K2.9K

Jul 30, 2021
25:46
What If Intelligence Re-Emerges?
927.7K25.1K2.6K

Jun 24, 2021
17:40
Why Don't We Live Around a Red Dwarf?
740.4K25.3K2.4K

Jun 10, 2021
30:18
How Big Is The Universe?
3.4M74K6.4K

May 21, 2021
24:41
Freakish One-Offs in Astronomy
361.7K11.9K946

May 1, 2021
25:50
A MILLION MPH
593.1K17.3K1.6K

Feb 6, 2021
19:10
Discovery of a Strange New World
271.1K9.2K714
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