Thousands of tons of cosmic dust are estimated to reach the Earth's surface every year, with most grains having a mass between 10−16 kg (0.1 pg) and 10−4 kg (100 mg).
很有可能，我們都是由宇宙星塵轉變而來，而現在我們試圖探索未知的景緻。
Thousands of tons of cosmic dust are estimated to reach the Earth's surface every year, with most grains having a mass between 10−16 kg (0.1 pg) and 10−4 kg (100 mg).
很有可能，我們都是由宇宙星塵轉變而來，而現在我們試圖探索未知的景緻。