Planet in sentence

2885 examples of Planet in a sentence

And the thing here is, for the purposes of this talk and atmospheric escape, Pluto is a planet in my mind, in the same way that planets around other stars that we can't see are also planets.

Also, we see that it's the "red planet," and atmospheric escape plays a role in Mars being red.

Here, for example, you can see in the red circle is the size of Mars, and in blue you can see the hydrogen escaping away from the planet.

So it's reaching out more than 10 times the size of the planet, far enough away that it's no longer bound to that planet.

And you can see that because oxygen is heavier, it can't get as far as the hydrogen, but it's still escaping away from the planet.

So the fact that we not only see atmospheric escape on our own planet but we can study it elsewhere and send spacecraft allows us to learn about the past of planets but also about planets in general and Earth's future.

But the New Horizons mission is currently studying atmospheric escape being lost from the planet.

So any planet orbiting a star that's not our Sun is called an exoplanet, or extrasolar planet.

So when we look at the light from these stars, what we see, like I said, is not the planet itself, but you actually see a dimming of the light that we can record in time.

So the light drops as the planet decreases in front of the star, and that's that blinking that you saw before.

If we look at transiting exoplanets with the Hubble Space Telescope, we find that in the ultraviolet, you see much bigger blinking, much less light from the star, when the planet is passing in front.

And we think this is because you have an extended atmosphere of hydrogen all around the planet that's making it look puffier and thus blocking more of the light that you see.

So you might think, well, does this make the planet cease to exist?

Our hydrogen, from water that is broken down, is going to escape into space more rapidly, and we're going to be left with this dry, reddish planet.

But as we learn about Mars or exoplanets like hot Jupiters, we find things like atmospheric escape that tell us a lot more about our planet here on Earth.

Life on this planet shares a common origin, and I can summarize 3.5 billion years of the history of life on this planet in a single slide.

What you see here are representatives of all known species in our planet.

And that's because, unfortunately, these seven animals essentially correspond to 0.0009 percent of all of the species that inhabit the planet.

That's because life on this planet and its history is the history of rule breakers.

Life started on the face of this planet as single-cell organisms, swimming for millions of years in the ocean, until one of those creatures decided, "I'm going to do things differently today; today I would like to invent something called multicellularity, and I'm going to do this."

We, like all other species on this planet, are inextricably woven into the history of life on this planet.

It's simultaneously as small as our breathing and as big as the planet.

Like air, climate change is simultaneously at the scale of the molecule, the breath and the planet.

And it's good for the planet, too: the trees absorbed carbon when they were growing up, and they gave off oxygen, and now that carbon is trapped inside the walls and it's not being released into the atmosphere.

We can help steady this planet we all share.

So imagine if Thucydides were watching planet Earth today.

This audience includes many of the most creative minds on the planet, who get up in the morning and think not only about how to manage the world we have, but how to create worlds that should be.

And what they imagined and what they created was a new international order, the order that's allowed you and me to live our lives, all of our lives, without great power war and with more prosperity than was ever seen before on the planet.

Now, this may seem surprising, as 75 percent of our planet is covered in water, but only 2.5 percent of that is freshwater, and less than one percent of Earth's freshwater supply is available for human consumption.

Alone, a single drop of water can't do much, but when many drops come together, they can sustain life on our planet.

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