star - is an astronomical object consisting of a luminous spheroid of plasma held together by its own gravity., galaxy - is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter., universe - is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy., climate - is the long-term pattern of weather in an area, typically averaged over a period of 30 years., weather - is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloudy.,

science

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?