Fountains Of Fire Used To Erupt On The Moon And Now We Know Why
Scientists from Brown University and the Carnegie Institution for Science just solved a moon mystery decades in the making.
We have long known that the moon was once home to “fire fountains,” a type of volcanic eruption driven by rapidly expanding gas. Astronauts on the Apollo missions in the ’70s found hardened beads of glass that were proof of these fiery geysers. But scientists were never quite sure exactly which volatile gas caused fountains — until now.
A new study published in the journal Nature Geoscience on Monday finds that carbon caused the moon eruptions when it mixed with oxygen to form expanding carbon monoxide gas.
For the study, the researchers analyzed the glass beads collected during the Apollo missions and looked for any magma that might have been trapped inside them when they cooled. And — voila — the magma they found had traces of carbon monoxide in it.
Since the researchers found much higher levels of carbon in the beads with trapped magma than in the moon’s volcanic glass overall, they concluded that the carbon monoxide must have been responsible for the fire fountains, Space.com reported.
The finding not only sheds new light on the moon’s old fire fountains, but also serves as more evidence that our planet and its satellite have a lot in common. The amount of carbon detected in the beads was very similar to the amount found in volcanic rocks on Earth.