No one knows why dark side of Venus has a faint glow On January 9, 1643, the Italian astronomer Giovanni Battista Riccioli pointed his telescope at Venus and noticed a faint glow on the planet's unlit side. Riccioli figured it was an ... boingboing.net boingboing.net / feeds boingboing-net-science .. boingboing-net-astronomy / / #science / / 6 days 6d Share
