lander 登陸小艇
太空船的一部份，可以用來登陸衛星或小行星。
Part of a spacecraft designed to land on a moon or asteroid.
laser 雷射
能量又強大又集中的光束。
A beam of intensely powerful light.
light year 光年
光跑一年可以到達的距離，用來測量尺度非常長的長度單位，大約是9兆公里或是63000個天文單位。
A measure of vast distances in space. 1 light year is the distance a beam of light travels in a year, roughly 9 trillion km (6 trillion miles), or 63,000AU.
A measure of vast distances in space. 1 light year is the distance a beam of light travels in a year, roughly 9 trillion km (6 trillion miles), or 63,000AU.
lunar 月亮的
Of, or to do with the Moon. 和月亮相關的
magnetic field 磁場
一種想像的磁性力場，圍繞著像恆星之類的磁性物體周遭，會對帶電粒子產生磁力。
The area around a magnet, or a magnetic body such as a star, in which objects are affected by that magnet’s force.
mass 質量
測量一個物體含有多少原子或物質的物理量。
The total amount of atoms that make up a substance.
matter 物質
物體的科學名詞。
The scientific word for stuff.
meteorite 隕石
來自太空的岩石掉到行星或衛星表面後的名稱。
A rock from space that has landed on the surface of a planet or moon.
microbes 微生物
像細菌這類的微小生物。
Microscopic organisms such as bacteria.
microwave 微波
恆星也會釋放的一種電磁輻射，肉眼看不見，但是可以用無線電波望遠鏡觀測。
A type of radiation emitted by stars. It cannot be seen, but can be detected by radio telescopes.
million 百萬
1,000,000.
moon 衛星、月球
繞著行星轉的天體
A natural body that orbits a planet.
NASA 美國航空暨太空總署
美國負責太空探索和研究的政府機構。
National Aeronautics and Space Administration, the US government agency responsible for space exploration and research.
nebula 星雲
太空中一堆龐大的塵埃和氣體，經年累月之後，可能會聚合成行星或恆星。
A vast cloud of dust and gases in space that may, over time, pull together to form stars and planets.
neutron star 中子星
超重恆星崩塌以後留下來的核心，密度非常高，尺度大約數十公里左右。
The remains of a massive star that has burned out, leaving behind an incredibly dense object the size of a planet.
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