Question

Why there is an atmosphere around earth while many planets dont have


PLZ ANSWER

Answer 1

Step-by-step explanation:

In short, our atmosphere is here because of gravity. When Earth formed, about 4.5 billion years ago, the molten planet barely had an atmosphere. But as the world cooled, its atmosphere formed, largely from gases spewed out of volcanoes, according to the Smithsonian Environmental Research Center (SERC). This ancient atmosphere was very different from today's; it had hydrogen sulfide, methane and 10 to 200 times as much carbon dioxide as the modern atmosphere does, according to SERC. [Infographic: Earth's Atmosphere Top to Bottom]

Answer 2

The correct answe is: because of the gravity and oxygen.

Step-by-step explanation:

Although planets such as Mars and Venus have a small atmosphere, they do not have the large amount of oxygen our planet has and cannot harbor life because of this reason. The atmosphere protects us from sunlight and is what allows life to exist.

The planet already had an atmosphere, but it was not strong enough, and as the planet cooled and the gases appeared, our atmosphere became stronger.