And communications could continue to be spotty for a while to come.
Perseverance came back into communications range"and the helicopter was still nowhere to be found, the situation began to generate some unease," wrote Brown, who's based at NASA's Jet Propulsion Laboratory in Southern California.
"Poor telecom performance was seen as a plausible explanation, but there were reasons to doubt it," he added."In more than 700 sols operating the helicopter on Mars, not once had we ever experienced a total radio blackout. Even in the worst communications environments, we had always seen some indication of activity."day, lasting about 24 hours and 40 minutes.
The Ingenuity blackout began on sol 755, or April 5. It finally ended on sol 761, when the mission team spotted a signal during the helicopter's expected wakeup window. A second signal at the same time on sol 762"confirmed that the helicopter was indeed alive, which came as a welcome relief for the team," Brown wrote.
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