The index of aridity is the ratio P PET P precipitation, PET potential evapotranspiration.

The outer surface of the heliosheath, where the heliosphere meets the interstellar medium, is called the heliopause.

Right there, above, way above the solar system, way beyond our solar system.

You've heard about solar flares.

Salinity The Red Sea is one of the saltiest bodies of water in the world, owing to high evaporation.

In chemistry and physics, volatility is the tendency of a substance to vaporize.

The sun is overhead, maximum heating, maximum evaporation, maximum clouds, maximum rainfall, maximum opportunities for reproduction.

A lunar month is shorter than a calendar month.

And, in fact, I'm going to go back to the solar system.

We do that in our solar system.

We're not even out of the solar system yet.

I find 18 examples of it in our solar system.

Planetary Science study of the planets of the Solar System.

You've heard about solar flares.

Auroras are caused by solar activity.

Relative to just even the outer regions of the solar system.

As a consequence, the entire solar system will be drastically changed.

The solar dynamo is the physical process that generates the Sun's magnetic field.

It contains almost 99.9 percent of all the mass in the Solar System.

OK, now, the scribble of the diagram of the solar system.

And perhaps, someday, far beyond our solar system itself.

But we're not done, with the solar system there.

(i) To reduce the amount of water flowing into the water meadows in order to reduce the evaporation losses that contribute to the deterioration in water quality in the southern area resulting from the flow of water that is highly saline because of evaporation into the rivers in the low water seasons

Well, I can click on this home button over here, and that will take us up to the inner solar system, and now we're looking at the rest of the solar system.

Freeman Dyson says let's look for life in the outer solar system

Mars has the Grand Canyon of the solar system, Valles Marineris.

To give you a sense of how small that size is, that's the size of our solar system.

It dictates most of the gravitational forces in our solar system.

And we know the solar output's not constant through time.

Now the total planet number in our solar system was nine.

It takes a full eight minutes for its radiation to reach us.

So hopefully that gives you a beginning sense of the scale of the solar system.

The sun is overhead, maximum heating, maximum evaporation, maximum clouds, maximum rainfall, maximum opportunities for reproduction.

Satellite sensors are used by scientists to study the effect of salt evaporation on local ecology.

Solar radiation equals roughly 10,000 times our current energy use.

The Solar System is subdivided into the inner planets, the asteroid belt, and the outer planets.

The space craft is rotating. It's likely that the Sun Orientation System is working.

So, here's Copernicus' view of what the solar system looked like as a plan.

But there is a wind that creates the biggest waves in the solar system.

The Sun produces various types of radio emissions, so spectrometers such as CALLISTO are necessary to identify the nature of coherent solar radio emissions from solar eruptions, relevant to space weather.

Egypt fears a temporary reduction of water availability due to the filling of the dam and a permanent reduction because of evaporation from the reservoir.

Similarly, water levels would fall in low water seasons and as a result of high rates of surface evaporation in the summer season.

Blasted at point blank range by solar radiation, the sungrazer will likely become one of the finest comets in many years.

He had a good theory of planetary rings and how the solar system operated.

We actually have a couple of other planets in this solar system.