Name: What If Earth Was Inside of a Nebula?
Uploaded: 2020-04-04T08:06:21.000Z
Duration: 3 min 24 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

A nebula is a giant cloud of dust and gas

sometimes taking up hundreds of light-years of space.

But with all that size, they aren't massive.

would only have a mass of a few kilograms.

That's because nebulae aren't very dense.

it wouldn't look anything like what you might expect.

all you'd see in the night sky would be this.

It turns out it's not that easy to see a nebula

To your eye, most galaxies in the Universe

And most nebulae are invisible altogether.

Your eyes aren't sensitive to the kind of light a nebula produces.

But look at the image taken by the Hubble Space Telescope,

That doesn't mean these beautiful images of space are fake.

Their colors just represent the lightwaves

would you be able to see a nebula if you lived in one?

Nebulae are pretty only when they are hundreds of light-years away.

you see the structures of light-years in thickness.

Once you're close to them, their light spreads out so much

You could fly your spaceship right into the nebula

the only effect you'd see would be brighter Auroras.

Unless the solar wind blew all the nebular particles

How do we know we are not living inside a nebula right now?

we can calculate the expected brightness of the neighboring stars.

we'd notice that our star was much brighter compared to others.

The nebula would be dimming the light coming in from outside of it.

But we may be able to travel to distant exoplanets

that experience incredible light shows in the night sky.

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What If Earth Was Inside of a Nebula?

equivalent

incredible

massive

vast