Cosmic dust likely delivered life's building blocks to early Earth

Cosmic dust, not asteroids, may have delivered life's building blocks to early Earth. A new study suggests microscopic dust particles, rather than large space rocks, are more likely carriers of essential amino acids. This dust could have seeded the planet with the ingredients for life. Researchers found that certain amino acids can survive interstellar conditions when attached to dust particles, potentially influencing the types of molecules that arrived on Earth billions of years ago.