NASA last made contact with the rover on June 10, 2018. The space agency says it has been listening every day since then for signs that Opportunity might wake up again.
If dust continues to coat the solar panels that power up the rover, Opportunity may not be able to wake in time to save its electronic circuits from freezing forever in the bitter Martian cold.
"This is the worst storm Opportunity has ever seen," Squyres told the Planetary Society. "We're doing what we can, crossing our fingers, and hoping for the best."