The surface of the Earth is the shore of the cosmic ocean. From it we have learned most of what we know. Recently, we have waded a little out to sea, enough to dampen our toes or, at most, wet our ankles. The water seems inviting. The ocean calls. Some part of our being knows this is from where we came. We long to return. These aspirations are not, I think, irreverent, although they may trouble…
ASTRONOMI DAN ILMU PENGETAHUAN RUANG ANGKASA ( Halaman 1-284) Bagian ini membahas tentang jagad raya dan seluk beluknya, mulai dari langit, rahasia di ruang angkasa yaitu fenomena seperti bintang hantu dan kuasar, matahari dan benda-benda langit yang membentuk tata surya, cara astronot mempersiapkan diri ke ruang angkasa, hingga tentang kemungkinan kehidupan di planet lain dan tentang piring …