Across the surface of the Moon, there are as many as 200 dark pits that lead to networks of lunar caves that formed billions of years ago. After a Mars-sized rock plummeted into the still-forming Earth around 4.6 billion years ago, pieces of rocky ejecta formed what we now know as the Moon. Up until around 2 billion years ago, our natural satellite was a much more turbulent place, facing constant meteorite bombardment and widespread volcanism. A consequence of this volcanic period was the formation of a network of lunar caves beneath the surface, which scientists have only recently discovered. Unlike the many different caves formed on Earth, the rock in the lunar caves hasn’t been carved by erosive forces such as wind and water. Instead, during its volcanic phase, lava flows created long, cavernous structures beneath the surface, much like lava tube caves found on Earth.
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Denne historien er fra Issue 195-utgaven av How It Works UK.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
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THE POWER OF WATER
We're hooked on fossil fuels. But hydroelectric power is becoming an increasingly important replacement for coal and oil
EXPLORING THE MOON'S CAVES
Earth's rocky neighbour is home to a network of unexplored caves, and scientists are keen to take a peek inside
HOW TO ELECT THE PRESIDENT
The campaigns, votes and elections that put someone in America's most powerful office
WHAT IS MORNING SICKNESS?
Why some pregnancies can cause nausea and vomiting
20 WEIRDEST SCIENCE MYSTERIES
From dark matter to deep-sea crabs, science still can't fully explain these strange quirks of nature
THE TRIANGULUM GALAXY SHINES IN A NEW HUBBLE IMAGE
A nearby galaxy is shining with star formation in a new image from the Hubble Space Telescope.
The world's fastest charger fully powers smartphones in five minutes
Scientists have revealed the fastest battery-charging technology in the world for smartphones, which can fully charge a smartphone in less than five minutes.
Real-time brain stimulation slashes Parkinson's symptoms by half in trials
Brain stimulation that rapidly adjusts in real-time can dramatically reduce Parkinson’s symptoms, an early trial suggests.
The hottest ocean temperature in 400 years threatens the Great Barrier Reef
The Great Barrier Reef is facing the hottest sea surface temperatures in four centuries.
Massive medieval coin hoard worth about 150 sheep' discovered
Archaeologists in Germany have unearthed over 1,500 medieval silver coins after a citizen noticed what looked like ‘small metal plates’ while digging during a construction project.
