For nearly 40 years, scientists believed a massive collision formed the Moon. This theory suggested debris from Earth created our satellite. However, a recent study proposes a different idea. Researchers now think the Moon might be an external body captured by Earth's gravity.

The Apollo missions provided invaluable lunar samples. Between 1969 and 1972, astronauts collected over 800 pounds of lunar rock and soil. Analyses revealed these materials share similarities with Earth's composition. Scientists believe our Moon formed 60 million years after the solar system's birth.

At the Kona Conference in 1984, scientists concluded otherwise. They argued the Moon resulted from a collision with a young Earth. However, two Penn State researchers now challenge this narrative. Darren Williams and Michael Zugger published their findings in The Planetary Science Journal.

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They propose the Moon was once part of a binary system. When this system approached Earth, our planet captured one body. The other rocky object was repelled into space. Williams stated, "The Kona Conference set the narrative for 40 years." He and Zugger believe their findings raise more questions.

Why the Moon Likely Originated Elsewhere

One key issue is the Moon's unusual orbit. A moon formed from debris should orbit above Earth's equator. Yet, our Moon orbits at a different angle. "The Moon aligns more with the Sun than Earth's equator," Williams noted.