Name: How Oumuamua Changed The Way We Watch Space
Uploaded: 2021-05-17T11:29:33.000Z
Duration: 15 min 59 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

an object from outside our own solar system.

A pair of Harvard scientists say a massive,

which roughly translates as messenger from the past

Everything in our solar system is on a closed loop.

You know, some orbits are nearly circular,

which means it's coming from outside the solar system.

Then something even more strange happened.

astronomers reported an unexpected acceleration,

only adding to the hypothesis that Oumuamua

It would be exciting to think this is an alien spacecraft.

You know, one of the burning questions on many minds is:

And if there is a perfectly common explanation,

you shouldn't go to the exotic explanation.

most astronomers agree that it's probably a comet.

the other interstellar object seen a year later.

of very elongated orbits move really fast

and then they're much slower as they move out

So when you looked at the brightness of this object,

it was going to only be easy to observe for about a week.

scientists were able to make guesses on the object's shape,

its size, how fast it was spinning and its color,

But there are a lot of questions about Oumuamua

fast missions that can respond to a discovery.

the way NASA works with the small missions,

is you put in a proposal and it takes many years

And then it might be a decade between proposal

So we would like to have missions that are maybe ready

or something that could be launched immediately.

are planning missions to wait for objects in space,

It may be humanity's only chance to see an object

traveling from one to another any time soon is

I think, Zefram Cochrane invents the warp drive.

Currently, the only way that we have to see

some of the material from these other star systems

is stuff that is in interstellar space that gets to us.

we've learned a lot from approaching objects

In 2014, the European Space Agency's Rosetta probe

that ever delivered a lander to the surface of a comet.

It's the first mission that went into orbit

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How Oumuamua Changed The Way We Watch Space

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