Why can't cosmic rays enter the earth?

We say that although the earth has a huge umbrella-the atmosphere, although the atmosphere can block the radiation that will enter the earth, it cannot block all the radiation. Similarly, so does the atmosphere's blocking of cosmic rays. When cosmic rays enter the earth, only a small part is blocked by the earth's atmosphere, so the influence of cosmic ray flow on the earth is still relatively large.

Earth (English name: Earth; Terra (Latin) is the third farthest planet from the sun and the only celestial body known to breed and support life.

About 29.2% of the earth's surface is land composed of continents and islands. The remaining 70.8% is covered by water, most of which are covered by salty water bodies such as oceans and bays, and some are covered by fresh water such as lakes and rivers, which together form the hydrosphere.

Most of the polar regions of the earth are covered with ice. The outer layer of the earth is divided into several rigid tectonic plates, which have migrated on the surface for millions of years, but the inside is still active, with a solid iron core, a liquid outer core that produces the earth's magnetic field, and a convective mantle that drives the plate structure.

The earth's atmosphere is mainly composed of nitrogen and oxygen. Tropical regions receive more solar energy than polar regions and redistribute it through atmospheric and ocean circulation. Greenhouse gases also play an important role in regulating the surface temperature. The climate of a region depends not only on latitude, but also on altitude and proximity to a mild ocean. Severe weather such as tropical cyclones, thunderstorms and heat waves mostly occur in vast areas and have a great impact on life.