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Incredible New Image Shows The Earth And Our Moon From Mars
The Mars Reconnaissance Orbiter captured this telescopic image of our planet and its natural satellite on Nov. 20, 2016 (CCSS Level: Grade 8, Words: 284)
Jan 8, 2017 Science & Technology
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NASA has just released this remarkable image of our Earth. And like most images of our planet taken from space, it really does give us the feeling of just how precious and fragile our place in the solar system really is. During a recent calibration exercise, the Mars Reconnaissance Orbiter snapped this breath-taking view of Earth and its moon from a distance of 205 million kilometers. It is so clear that even the planet's continents can be made out.

The particular camera used to take this picture is so powerful that it can resolve features as small as 1 meter across on the Martian surface from its position 250 to 300 kilometres above the planet's surface.

"The combined view retains the correct positions and sizes of the two bodies (Earth and the moon) relative to each other," NASA officials wrote in a description of the image, which was released on January 6. "The distance between Earth and the moon is about 30 times the diameter of Earth," they added. "Earth and the moon appear closer than they actually are in this image because the observation was planned for a time at which the moon was almost directly behind Earth, from Mars' point of view, to see the Earth-facing side of the moon."

The just-released image is sharp enough to show up continent-size details on Earth. For example the brownish patch in the centre of the planet is Australia, NASA officials said. Not only are the oceans and continents clearly visible, but the features at the top left corner are bits of Southeast Asia. The bright patch at the bottom of Earth is Antarctica, and the other bright areas are clouds.

What was the purpose of the image taken by the Mars Orbiter?
It was to capture the Earth and its moon
It was to calibrate the spacecraft
It was captured purely by chance
It was to test the long-range camera
What is the most clearly defined region of Earth visible in the image?
Antarctica
South East Asia
Australia
Pacific Ocean
What is the meaning of the phrase "breath-taking"?
hard to breathe
awe-inspiring
causing pain
taken from space
The adjective meaning "related to Mars" is…
continent
orbiter
Martian
planet
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ac-tual

real, in fact


adj.实际

aid

help


n,v.援助

Ant-arc-ti-ca

the land around the south pole


n.南极洲

com-bined

put together, mixed


v.结合

con-ti-nents

the world's continuous expanses of land


n.大陆

di-rect-ly

with nothing in between


adv.直接

fea-ture

something that stands out


n.特征

fea-tures

things that stand out


n.特征/特点

or-bit

the path around a planet or star


n.轨道/常轨

patch

mend or strengthen a hole or weak point in something


v.打补丁

pow-er-ful

have power or strength


adj.强大

precious

having great value


adj.珍贵

re-cent

not long ago


adj.最近    

re-lease

to let go


v.发布

re-leased    

set free, allowed to move


v.放出/发布

re-mark-a-ble

amazing, hard to believe


adj.卓越

So-lar Sys-tem

the eight planets and their moons traveling around the sun


n.太阳系

solve

find an answer

 


v.解决

stem

the main body or stalk of a plant or shrub, usually rising above ground


n.干茎

sur-face

the top, or the outer layer


n.表面/外观