In the mornings, Sylvia Beer sits at the desktop computer in her living room with a cup of coffee and looks for ridges on Mars. Her town of Wodonga, Australia, gets so hot that in summer she begins scanning Mars images at 4 a.m., when she takes medication for Parkinson’s disease. The condition sometimes affects her memory and movement - she uses a cane or walker to get around, and can’t walk as far as she’d like - but her passion for learning about space has not suffered.

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