a-ma-zing
makes you surprised
adj.惊人
as-te-roid
a small rocky body going around the sun
n.小行星
as-ter-oids
a small rocky body orbiting the sun
n.小行星
co-met
celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun
n.彗星
ho-ri-zon
the line where the earth and sky appear to meet
n.地平线
hot-spot
special areas to click on to see more
n.热点
rough
having an uneven or irregular surface; not smooth or level
adj.粗暴
sci-en-tists
experts in science, people who study science
n.科学家
space-craft
a ship that flies in space
n.太空船/宇宙航行器
ste-roids
drugs that may make people bigger, better or faster
n.类固醇
sur-face
the top, or the outer layer
n.表面/外观
flew
to go somewhere by air or in space
v.飞
ho-ri-zon
the line where the earth and sky appear to meet
n.地平线
hot-spot
special areas to click on to see more
n.热点
So-lar Sys-tem
the eight planets and their moons traveling around the sun
n.太阳系
space-craft
a ship that flies in space
n.太空船/宇宙航行器
stem
the main body or stalk of a plant or shrub, usually rising above ground
n.干茎
bil-lion
a very large number, equal to 10^9
No.十亿
ex-plor-ing
to study or look at something in a careful way to lean more about it
v.探索
ho-ri-zon
the line where the earth and sky appear to meet
n.地平线
hot-spot
special areas to click on to see more
n.热点
launched
to send or shoot a rocket into outer space / to get moving
v.发射/推出
So-lar Sys-tem
the eight planets and their moons traveling around the sun
n.太阳系
space-craft
a ship that flies in space
n.太空船/宇宙航行器
stem
the main body or stalk of a plant or shrub, usually rising above ground
n.干茎
cra-ters
large holes in the ground, shaped like a bowl, often caused by a fast moving rock from space
n.陨石坑
hot-spot
special areas to click on to see more
n.热点
sci-en-tists
experts in science, people who study science
n.科学家
strange
not usual, hard to understand
adj.奇怪/陌生
sur-face
the top, or the outer layer
n.表面/外观
ash
the powdery residue left after the burning of a substance or emitted by a volcano
n.灰
as-tro-no-mer
an expert in or student of astronomy
n.天文学家
dis-co-vered
found, uncovered
v.发现
ho-ri-zon
the line where the earth and sky appear to meet
n.地平线
hot-spot
special areas to click on to see more
n.热点
probe
physically explore or examine (something) with the hands or an instrument
v.探测
sug-ges-tion
an idea or plan
n.建议