How does the Oort Cloud affect earth?

The estimated 2 trillion objects in the Oort Cloud are primarily composed of ices such as ammonia, methane, and water. Formed in the beginning of the solar system, they remain pristine chunks of its early life, allowing comets to provide insight into the environment in which the early Earth evolved. read more

The Oort Cloud is made up of organic ices including water, methane and ethane. It also houses carbon monoxide and hydrogen cyanide, both of which can be deadly as a gas in enclosed spaces. Ironically, hydrogen cyanide is also thought to be a precursor to the compounds that played a role in the origins of life on Earth. read more

The Oort cloud (/ ɔːr t, ʊər t /), named after the Dutch astronomer Jan Oort, sometimes called the Öpik–Oort cloud, is a theoretical cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from 50,000 and 200,000 AU (0.8 and 3.2 ly). read more