absolute magnitude - a measurement of how bright stars would appear if all stars were the same distance from Earth., apparent magnitude - a measurement of how bright a star appears from Earth., evidence - information that explains or supports a claim., orbit (noun) - the curved path of an object around a star, planet, or moon., orbit (verb) - to move around a larger object in space., star - a huge sphere of very hot, glowing gas that produces its own light.,

Patterns in the Universe

列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?