Name: 美國宇航局從一顆巨大的小行星中拯救地球的計劃。 (NASA's plan to save Earth from a giant asteroid)
Uploaded: 2021-01-14T08:48:00.000Z
Duration: 6 min 29 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

In 1954, Ann Hodges was hit by a meteorite.

"And this comes through the roof and hits you."

when the rock crashed through her ceiling

and bounced off the radio into her stomach.

Because it was small, her injuries were minor.

"The first person ever to be hit by a meteorite.

But much bigger objects have collided with Earth.

Elsewhere, mammoth meteorites have been discovered

In movies like Deep Impact and Armageddon

I'm the guy who gets to do it saving the world."

You might think this only happens in Hollywood,

that weren't big enough to become planets

Smaller asteroids are called "meteoroids"

and when they fall through Earth’s atmosphere

created by objects entering our atmosphere.

NASA takes multiple pictures of the night sky

and uses computers to scan for moving objects.

to detect how close the asteroids are to Earth.

Here, the nearest objects are labelled in green.

have been classified as “near-Earth”,

meaning they orbit within roughly a third

And based on the object’s speed and brightness,

to predict whether it will collide with Earth.

the number of megatons in the payload of the

But asteroids don’t need to hit Earth to cause damage.

that damaged structures and injured over 1,500 people.

to ask about the threat of future collisions.

"I said, 'If we saw one coming toward Omaha,

[Scientists] said they could use a laser."

to have a laser powerful enough to split it in half."

字幕列表影片播放

美國宇航局從一顆巨大的小行星中拯救地球的計劃。 (NASA's plan to save Earth from a giant asteroid)

equivalent

massive

impact

lethal