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There’s Something Massive Buried Under the Moon’s Far Side

11 Jun 2019, 23:54 UTC
There’s Something Massive Buried Under the Moon’s Far Side
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And it’s likely the massive metallic corpse of an ancient asteroid

This false-color graphic shows the topography of the far side of the Moon. The warmer colors indicate high topography and the bluer colors indicate low topography. The South Pole-Aitken (SPA) basin is shown by the shades of blue. The dashed circle shows the location of the mass anomaly under the basin. [NASA/Goddard Space Flight Center/University of Arizona]

It may be Earth’s only natural satellite and our closest alien world, but the Moon still hides a multitude of mysteries under its surface—including something massive embedded in its far side.

As detailed in a new study published in the journal Geophysical Research Letters, researchers led by Baylor University analyzed data from NASA’s Gravity Recovery and Interior Laboratory (GRAIL) mission that orbited above the lunar surface for a little under a year in 2012.

The two GRAIL spacecraft flew one in front of the other, precisely measuring the distance of their separation in order to detect very small fluctuations in the Moon’s gravitational field. When the spacecraft passed over a region of higher density, the local gravitational field would become enhanced, slightly accelerating the leading spacecraft (called “Ebb”) before ...

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