Why doesn't the Earth's atmosphere get stripped away?

The Earth has a magnetosphere so the solar winds from our Sun are deflected around us. The Sun also has a much larger magnetosphere and the interstellar debris is deflected around the solar system. That was what all the news about Voyager 1 was about, it's passing from the heliosphere to interstellar space. The density of material is also really low and much are moving along with us so there really isn't that much of a difference in velocity. It's like don't you feel a wind on your face in a car with the window rolled up, it' cause the air is moving with you. The fact that the Solar System is moving a half billion miles per hour doesn't mean a thing, if you were moving as fast as a bullet then it would just be standing still.

There isn't anything to do the stripping away. Space is near-on completely empty. You don't see astronauts doing space walks with their spacesuits flapping in the breeze.

It's half a million miles an hour, by the way, in orbit around the galaxy.

The solar wind is prevalent in the solar system and it pushes the interstellar medium away, so the Earth doesn't actually go into it. Meanwhile Earth's magnetic field protects our atmosphere from the solar wind.

the speed doesnt matter . but if you meen solar winds and radiation its because the earth hash a magnectic field created from inside the earth, where the core is spinning , the magnetism releases from the poles which stops the atmosphere being stripped away .

There is no resistance in space and so there is no force to push back on us while the earth moves so fast. Allowing gravity to hold us with out anything happening.

because space is almost completely empty and there's nothing there to strip anything away

everything is held in place by earth's gravity and is moving right along with us, no problem

??? The oceans under the atmosphere and the water cycle. Or. O-zone layer.

Because it's really big.