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18 godz. temu · Sun spots would have covered 5–30% of the surface. The rotation rate was gradually slowed by magnetic ... it takes a long time for radiation to reach the Sun's surface. Estimates of the photon travel time range between 10,000 and 170,000 years ... could be used to trigonometrically determine the distances between Earth, Venus ...
18 godz. temu · The first British colonists to arrive in Australia in 1788 established a settlement at Port Jackson and noted ... so the dingo is estimated to have arrived in Australia at a time between 3,500 and 12,000 YBP. ... dingoes howl over long distances to attract other members of the pack, to find other dogs, or to keep intruders at bay. Dingoes ...
