4 ms·
Mmmm. Okay, but a star puts out a lot of energy, over a long period of time. Is it enough that we calculate the gravitational effect of all those photons, rathe
by thailandstartup 16y ago
Mmmm. Okay, but a star puts out a lot of energy, over a long period of time. Is it enough that we calculate the gravitational effect of all those photons, rather than just the mass of star itself when calculating say the acceleration of the pioneer crafts?
- sp332 16y agohttp://www.wolframalpha.com/input/?i=3+cubic+au+times+682+kilojoules+per+meter+squared+per+light-second&a=UnitClash_*au.*AstronomicalUnits-- http://www.wolframalpha.com/input/?i=3+cubic+au+times+682+ki... so 2.5 * 10^14 kg inside the earth's orbit, or equivalent to 254 cubic kilometers of water - on an astronomical scale, insignificant. Still, bigger than I expected.