Planets in sentence

426 examples of Planets in a sentence

It's part of what it means to be a planet, if you ask me, because planets, not just here on Earth but throughout the universe, can undergo atmospheric escape.

And the way it happens actually tells us about planets themselves.

And you would say, well, there are eight planets, maybe nine.

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.

So fundamental characteristics of planets include the fact that they are bodies that are bound together by gravity.

But another fundamental characteristic about planets is what you don't see here, and that's the star, the Sun, that all of the planets in the solar system are orbiting around.

The reason that fundamentally stars drive atmospheric escape from planets is because stars offer planets particles and light and heat that can cause the atmospheres to go away.

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.

So one way we actually can learn about the future is by planets so far away that we can't see.

But the planets that I did want to talk about are known as transiting exoplanets.

And these planets that we call transiting have the special feature that if you look at that star in the middle, you'll see that actually it's blinking.

And the reason that it's blinking is because there are planets that are going past it all the time, and it's that special orientation where the planets are blocking the light from the star that allows us to see that light blinking.

And by surveying the stars in the night sky for this blinking motion, we are able to find planets.

This is how we've now been able to detect over 5,000 planets in our own Milky Way, and we know there are many more out there, like I mentioned.

So not only do we detect the planets but we can look at this light in different wavelengths.

And these planets can be called hot Jupiters, for some of the ones we've found.

And that's because they're gas planets like Jupiter, but they're so close to their star, about a hundred times closer than Jupiter.

So unlike our 400 pounds per minute of hydrogen being lost on Earth, for these planets, you're losing 1.3 billion pounds of hydrogen every minute.

And this is a question that people wondered when they looked at our solar system, because planets closer to the Sun are rocky, and planets further away are bigger and more gaseous.

So there's a lot of amazing science that you hear about happening in space and planets that are far away, and we are studying these planets to learn about these worlds.

So we learn how to operate on other planets through these rovers.

If you look at the two, it's almost like two different planets, but these places were both built by humans and in fact, the story is that when you have a 200-foot block city, you can have a two-lane city, or a two-to-four lane city, and a 600-foot block city is a six-lane city, and that's a problem.

He wanted to estimate N, the number of communicative civilizations out there in our galaxy, and he included in there the rate of star formation, the rate of planets, but crucially, intelligence.

Just start with the number of planets there are in our galaxy.

How wonderful would it be, while we discover faraway planets, to rediscover the needs of the brothers and sisters orbiting around us.

It's almost like instead of running away to colonize new planets, we could fix the one that we're already on.

Other planets might have liquid water.

And up above, in the twilight, bright stars and planets had come out.

So there was the sun, and there were the planets, and I could see how the planets revolve around the sun.

The sun burst out, the blue sky returned, the stars and the planets and the corona were gone.

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