Bardo_Thodol wrote on 04.03.2007 at 23:01:13:Nevem zaradi česa bi se moral posipati?
Ali res slediš temu, kar ti razlagam?
Zemlja se oddaljuje od Sonca, to je jasno, vendar se oddaljue zaradi istega razloga, kot se oddaljuje Luna od Zemlje, namreč zaradi plimnih sil, ki zmanjšujejo vrtilno količino Zemlje.
Izguba mase Sonca zaradi sevanja je tu zanemarljiva v primerjavi s plimnimi silami.
In kljub temu, da se oddaljuje, to ne pomeni, da bo čez 5 milijard let že tako daleč, da Sonce ne bo doseglo Zemeljske krožnice.
1,5 cm x 5 milijard let je 75.000 km kar ni prav veliko v primerjavi z razdaljo 150.000.000 km kolikor znaša razdalja do Sonca (1 : 2000)
a trdiš, da tole ne velja?
The Sun is powered by nuclear fusion, which means the Sun is continuously transforming a small part of its mass into energy. As the mass of the Sun goes down, our orbit gets proportionally bigger. However, over the entire main sequence lifetime of the Sun (about 10 billion years), the Sun will only lose about 0.1% of its mass, which means that the Earth should move out by just ~150,000 km (small compared to the total Earth-Sun distance of ~150,000,000 km). If we assume that the Sun's rate of nuclear fusion today is the same as the average rate over those 10 billion years (a bold assumption, but it should give us a rough idea of the answer), then we're moving away from the Sun at the rate of ~1.5 cm (less than an inch) a year.
ti si napisal, da se Zemlje približuje Soncu, ne oddaljuje...da te spomnim.
ti sam sebi ne slediš
Bardo_Thodol wrote on 04.03.2007 at 23:01:13:Ali res slediš temu, kar ti razlagam?