Things are not looking best for NASA’s Opportunity rover on Mars. The rover, which is nearing its 15th year, is stuck in a fierce dust storm that is blanketing the planet and it’s unclear whether it will make it out unscathed. The friendly little robot radioed back to its handlers on Earth on Sunday morning, letting them know that it still had enough power to communicate, but those transmissions have since ceased.
In a new update from NASA, the Opportunity team notes that a more recent attempt to contact Opportunity has been met with only silence. This indicates that the rover is now in a critical low-power mode where it basically hibernates while occasionally checking power levels.
In a new image, NASA shows how the huge storm is hampering Opportunity’s solar panels. The image, which is a composite simulation of the varying degrees of atmospheric opacity that the rover would have seen as it was gradually swallowed up, reveals just how dark the skies are getting above Opportunity.
“The left starts with a blindingly bright mid-afternoon sky, with the sun appearing bigger because of brightness,” NASA explains. “The right shows the Sun so obscured by dust it looks like a pinprick. Each frame corresponds to a tau value, or measure of opacity: 1, 3, 5, 7, 9, 11.”
The low light level is preventing Opportunity from keeping its batteries charged and while science objectives were placed on hold as the dust storm approached, it simply didn’t have enough power in its reserves to keep it awake as the dust clouds engulfed it.
According to NASA, the rover’s current state permits it to wake back up from time to time so that it can check its power reserves. Once the solar panels begin providing power once again, it will wake to find its batteries charged, in which case it can resume its mission. However, scientists don’t know when that might actually happen.
“If the rover’s computer determines that its batteries don’t have enough charge, it will again put itself back to sleep,” NASA says. “Due to an extreme amount of dust over Perseverance Valley, mission engineers believe it is unlikely the rover has enough sunlight to charge back up for at least the next several days.”