Gleichen and Valentinova: Into the Abyss?
I know I wrote a whole blog post about how Polina Valentinova, after her record-setting solo space voyage as a teenager in the 1980s, becoming the first person to visit Saturn, Uranus, and Neptune (and to complete a full eight-planet tour), with nuclear thermal rocket … Continue readingGleichen and Valentinova: Into the Abyss?