Venus has long been a planet of mystery, particularly due to the yellowish “lower haze” in its atmosphere, first observed by the Venera and Pioneer Venus probes in the 1970s. Recent research by Hiroki Karyu and his team at Tohoku University has revealed that this haze is formed from cosmic dust particles left by meteorites, which interact with sulfuric acid in Venus’s atmosphere. This process creates condensation nuclei, similar to how clouds form on Earth. Previously, it was speculated that volcanic ash was responsible for the haze, but this theory has been disproven. The discovery highlights the continuous influx of cosmic dust as a key factor in sustaining the haze, offering new insights into atmospheric processes on Venus.
QUESTION: How might understanding the atmospheric processes on Venus influence our approach to studying other planets in our solar system?
Venus’ mysterious haze is actually cosmic dust
