Kusho ukuthini ukufihlwa kwenyanga?
Ubuso obufihliwe beNyanga yi-hemisphere yalesi siphepho esingabonakali eMhlabeni ngoba iNyanga ihlale ibonisa ubuso obufanayo. Lokhu kungenxa yokuthi inyanga ithatha isikhathi esilinganayo ukuzungeza i-axis yayo (ukuzungeza) njengoba yenza ukuzungeza uMhlaba (ukuhumusha). Ukuhlangana kwe-tidal yigama elisetshenziselwa ukuchaza lesi senzakalo. Izithombe zokuqala zengxenye ekude yeNyanga zathunyelwa ngomkhumbi-mkhathi waseSoviet uLuna 3, umkhumbi-mkhathi wesithathu owathunyelwa eNyangeni, ngo-October 7, 1959.