Notice the deep, bright craters and dark plains on the moon's surface in the image above—these formed because the Moon has no atmosphere to protect it from space rocks, which is also the main reason life can't thrive there.
When you look up at the bright moon at night, it’s easy to wonder:
is anyone or anything looking back at us?
Could there be unique space plants, alien bugs, or tiny microbes hiding in the lunar dust?
The short answer is no.
The Moon is a completely quiet, silent desert world. There are no native plants, animals, or bacteria living there.
Why Nothing Grows on the Moon
For life to exist like it does on Earth, it needs a few basic ingredients that the Moon simply does not have:
No Air to Breathe: The Moon has no atmosphere. That means there is zero oxygen for living things to breathe and no air to protect the surface from harsh solar radiation.
No Liquid Water: Living things need liquid water to survive. Any water on the Moon is frozen solid as ice, hiding inside deep, dark craters where the sun never shines.
Extreme Temperatures: Without an atmosphere to trap heat or block out the burning sun, temperatures go wild. During the lunar day, it hits a scorching 120°C. At night, it drops to a freezing -130°C. Nothing can easily survive that kind of shift!
The Twist: Earth "Hitchhikers" on the Moon
Even though nothing naturally lives on the Moon, humans have accidentally left a few microscopic Earth things behind!
1. The Unstoppable "Water Bears"
In 2019, a small robotic spacecraft from Earth crashed onto the Moon. It happened to be carrying thousands of dehydrated tardigrades—microscopic, eight-legged creatures often called "water bears."
Tardigrades are the toughest creatures known to science. When they dry out, they pull in their legs and go into a deep sleep where they don't need food or water for years. They are likely still sitting in the lunar dust today! They aren't actively walking around or growing, but they are incredibly durable survivors.
2. Astronaut Microbes
When Apollo astronauts visited the Moon decades ago, they had to leave some trash bags behind to make their spacecraft lighter for the trip home. Scientists believe the intense space radiation and extreme heat have likely killed the bacteria inside those bags by now, but there is a tiny chance that some super-strong bacterial spores are still sleeping out there in the dark.
What Do You Think?
So, while the Moon doesn't have its own local aliens, it does have a few tiny, sleeping hitchhikers from Earth.
If you had the chance to jump on a rocket ship and visit the Moon, would you take it? Let me know in the comments below!