https://www.cnet.com/news/mars-dust-storm-nasa-opportunity-rover-still-growing-and-turning-day-to-night/

NASA's Mars Reconnaissance Orbiter spotted a major dust storm on the Red Planet on June 1. Within a week, the storm had grown to cover an area larger than North America. Just a few days later, NASA says the storm has more than doubled in size again making it nearly the size of Asia and casting a very ominous shadow on the Opportunity Rover, which is caught in the storm.

"The storm is one of the most intense ever observed on the Red Planet, according to a NASA release dated Tuesday. "It has blocked out so much sunlight, it has effectively turned day into night for Opportunity, which is located near the center of the storm, inside Mars' Perseverance Valley."