The optical engineering required to photograph an Earth twin
• More and more papers are coming out about the upcoming Habitable Worlds Observatory (HWO). • As the telescope moves from theory to practice (and physical manifestation), various
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Diagnosing a Commodore PET video fault from one photograph
• Tynemouth Software writes about an owner who had initially made contact saying they had a PET 2001, and there was no video output, and they wondered if bad ROM or RAM could cause