
No Moon, No Life? Here's What Would Happen If the Moon Disappeared
Special | 2m 31sVideo has Closed Captions
Star Gazers host Trace Dominguez takes us on a thought experiment through a moonless world.
From wild weather to changing tides, Star Gazers host Trace Dominguez takes us on a thought experiment through a moonless world—and shows just how much we rely on our lunar neighbor.
Problems playing video? | Closed Captioning Feedback
Problems playing video? | Closed Captioning Feedback
Star Gazers is presented by your local public television station.
Funding provided by The Batchelor Foundation and The William J. & Tina Rosenberg Foundation

No Moon, No Life? Here's What Would Happen If the Moon Disappeared
Special | 2m 31sVideo has Closed Captions
From wild weather to changing tides, Star Gazers host Trace Dominguez takes us on a thought experiment through a moonless world—and shows just how much we rely on our lunar neighbor.
Problems playing video? | Closed Captioning Feedback
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Imagine looking up at the# night sky and realizing the Moon - It's gone!
What happens to Earth if our closest cosmic# neighbor just vanishes?
Exactly how important is the Moon for life on Earth?
The first and most# obvious change would be the tides.
The Moon's gravity pulls on the Earth's oceans, creating the# daily rise and fall of tides.
Without the Moon, the Sun would still cause smaller tides, but# they'd be less than half as strong.
And that might not sound so bad, but ocean ecosystems like# coastal wetlands and tidal zones depend on strong, regular tides.
Without them, many plants# and animals would lose their habitats and food chains would collapse.
The obvious# example of this would be sea turtles.
Baby sea turtles depend on the Moon to light# their way to the ocean.
So without it, they may not be able to reach their home after# hatching.
Another important thing to note, the Moon also acts like a stabilizer for Earth's# axial tilt.
Right now, Earth tilts about 23.5°, which is why we have seasons.
Without the Moon's# gravitational influence, Earth's tilt could wobble wildly over long periods of time.
Sometimes just# a few degrees, other times tilting as much as 45°.
That tilt would alter the amount and intensity# of sunlight on Earth, meaning dramatic climate shifts like ice ages, extreme heat waves, and# unpredictable seasons.
In short, the Moon helps keep our planet's climate relatively stable.# Without it, we'd be in for a very bumpy ride.
And of course, nights would also be much darker# if there were no Moon.
The Moon reflects sunlight as the second brightest object in the sky after# the Sun.
Without it, the night sky would be lit only by stars and the occasional planet.
That# might sound peaceful, but animals that rely on moonlight, like migrating birds and nocturnal# predators, would lose an important natural guide.
Even humans might have developed differently if# the Moon hadn't been there to light the night sky.
Without the Moon, life on Earth might never have# developed the way it did in the first place.
Some scientists believe that the Moon's stabilizing# effect on Earth's tilt was critical in creating a relatively mild, steady climate, perfect for life# to evolve.
So, next time you look up at the Moon, remember it's not just a pretty object in the# night sky.
Our lunar neighbor shapes the tides, steadies our climate, lights our nights, and# contributes to the existence of life on Earth.
So, Star Gazers, as usual, keep looking up.
Just, you# know, maybe now with new appreciation for the#Moon.
Do you want to know more about the night# sky, space exploration, astronomy?
Let us know down in the comments what you want to know.
And# in the meantime, click this video to learn more.

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Star Gazers is presented by your local public television station.
Funding provided by The Batchelor Foundation and The William J. & Tina Rosenberg Foundation