What would life on our planet look like and would it exist at all? We explain.
A glance at the night sky reveals a silver disc that seems like a simple ornament. In reality, this satellite keeps the planet in balance. Without the Moon, geology, biology, climate, and even human culture would be entirely different.
Scientists believe the Moon was born from a catastrophe: early Earth collided with a Mars-sized object called Theia. If this impact hadn’t occurred, the Moon wouldn’t exist.
The collision itself remelted both worlds. Earth, being larger, attracted most of Theia’s iron and heavy elements. This is how the planet acquired an enlarged iron core. And a large core generates a powerful magnetic field. This field protects Earth from the Sun’s radiation attacks.
Without such protection, the atmosphere would constantly lose particles under the onslaught of solar wind, and the very first life forms, had they even been able to appear, would have evolved completely differently. Geophysicists call the Moon a “satellite of life,” emphasizing that without it, the magnetic field would never have become so strong.
Over 3 billion years ago, oceans appeared on Earth, mixing chemicals and distributing them across the planet. This giant “mixer” accelerated the formation of increasingly complex organic molecules, until some of them became capable of self-replication. It was in this chaotic and unstable environment that the first living cells emerged.
Without lunar gravity, oceans would remain almost motionless. Stagnant water doesn’t mix substances, meaning biomolecules would evolve immeasurably slower, and life might never have begun.
Even today, the Moon influences the ocean: friction occurs between water and the seabed, which gradually slows Earth’s rotation. Currently, the day lengthens by about 1.7 milliseconds every century, and over billions of years this effect has stretched the day to the familiar 24 hours. Without the Moon, days would be much shorter — just six to ten hours. The planet would race at a frantic pace, generating hurricane-force winds. But the main danger isn’t the length of the day.
Lunar gravity keeps Earth’s rotation axis from strong oscillations. Without this stabilizer, the axis would wobble from side to side. The gravitational influence of other planets would change the tilt of Earth’s axis over a wide range — from 0° to 85° instead of the current stable 23.5°.
Seasons would change chaotically. The equator would heat up incredibly, and the poles would plunge into a half-year icy night. Plants, being more resilient, might perhaps adapt to radiation and temperature swings, but animals — unlikely. A Moonless Earth could remain lush and green, but without bird chirps and wolf howls. And at night, darkness would reign on the planet, threatening extinction for all species accustomed to hunting and reproducing under starlight.
The harm from the Moon’s absence would be felt even at the single-cell level. The Moon’s tidal forces not only rock the ocean but also constantly “squeeze and release” Earth’s core, generating heat. Without this mechanical influence, the planet’s internal dynamo would work weaker, directly affecting plate tectonics and volcanic activity. But that’s not all.
Let’s suppose humanity did appear on such a planet. But at night, there would be no Moon above people. Only distant planets and the starry realm of the Milky Way. Archaeologists find evidence that already 20,000 years ago, people carefully monitored lunar cycles. Ancient farmers created calendars whose structure was directly determined by solar and lunar cycles. Without the Moon, neither the lunar calendar nor the first astronomical records would have emerged.
Our nearest neighbor in the sky awakened curiosity in humans. Humans began to wonder how to fly to the Moon, and what secrets the Universe hides. Without the Moon, this impetus might not have happened. The space exploration program would look different. And perhaps humanity would have remained a purely terrestrial species, never taking a step toward the stars.
Also on this topic:
Our compatriots choose them as husbands more often than other foreigners. Family life with Turkish…
"Mandry-Club" shares its secrets. Detailed guides, essential life hacks, and everything you need to know…
Sometimes tourists leave the country with mixed feelings: they see more drawbacks than advantages. So…
One of the more interesting shifts in Web3 is that users are no longer impressed…
Over the past half-century, the political map of the world has changed significantly. Let's look…
The Thai language belongs to the Tai-Kadai language family and possesses a unique tonal system.…
