A survey of the gravitational field on the surface of the moon to determine its makeup underneath has discovered the existence of a mass underneath one of the craters.
Publishing in Geophysical Research Letters, the Baylor scientists have two theories for the origin of the huge subterranean blob. It could be the leftovers of dense oxides created in the last years when the moon’s surface was an ocean of magma — a theory that relies on the giant-impact hypothesis, when an impactor the size of Mars may have collided into a magma-covered Earth, ejecting magma into orbit that became the surface of the moon. But speaking with National Geographic, the Baylor team appears to prefer the idea that the mass is the remainder of the iron-nickel core of an ancient impactor that created the South Pole-Aitken basin.
This discovery has generated quite a bit of interest.
But as a fan of the film 2001: A Space Odyssey, my thoughts immediately went to the possibility that the mass was deliberately planted there by an extra-terrestrial intelligent life form as a signal. In the film, the discovery of anomalous electromagnetic fields on the surface of the Moon suggests an unusual object underneath and leads to the discovery of a large buried black monolith. When the covering soil is removed, the first exposure of the monolith to sunlight causes it to emit a piercing signal that heads towards one of the moons of Jupiter. It is inferred that extra-terrestrials (who had visited Earth a long time ago before humans had evolved) had planted the monolith on the Moon to serve two purposes: Its signal would alert them to the fact that organisms on Earth had evolved to the extent that they had become advanced enough to break free of Earth’s gravitational field, and the signal’s destination would tell Earth scientists where they should go to try and make contact with the ancient visitors.
That would be an exciting possibility but alas the more prosaic explanation of a crashing meteor is likely to be the correct one. But still, maybe the scientists investigating this new blob should be alert for any signal it emits if and when it is excavated …