Today, we know that left-handed amino acids are the building blocks of life. Nearly all living organisms on Earth, from bacteria to humans, make proteins from left-handed amino acids.

In 1969, the Murchison meteorite that fell in Australia contained dozens of different amino acids—the building blocks of life. Comets may also have offered a ride to Earth-bound hitchhiking molecules, ...

Carbon dating estimates that Murchison is around 7 billion ... However, the amino acids in the meteorite had one distinct difference to those typically found on Earth—they came ...

The Murchison meteorite fell in the town of Murchison ... The meteorite is rich in organic compounds, including amino acids, essential for life. Scientists believe these molecules, which formed ...