How are you all? We've had some beautiful spring days here in Vienna, with a crisp night sky that's perfect to look up at the stars. So let's dive into astronomy again! Today I'd like to look at an incredibly gorgeous book with you all: the Harmonia Macrocosmica by Andreas Cellarius, created in the 17th century. It features historical maps of the sky, with copper plate engravings to illustrate both ancient and (at the time) modern theories of how the solar system might be laid out. Is it geocentric? Heliocentric? Or a mix of the two?? Triggers include a soft spoken voice with accent, pointing and tracing, page turning, camera panning. You can support my channel via: https://www.paypal.com/paypalme/melan...
다른 앱을 사용하면서 들으려면 재생 중에 플레이어를 PIP(픽처 인 픽처)로 전환하세요. 작은 떠 있는 창으로 재생이 계속됩니다(화면은 켜진 상태).
화면을 완전히 끈 채로 들으려면, 브라우저에서의 재생은 YouTube 정책상 멈춥니다. YouTube 앱에서 열면 백그라운드 재생이 지원되는 환경(예: YouTube Premium)에서 계속 들을 수 있습니다.
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