The Nucleus of Life on Earth
The Sun resides at the center of Earth’s sphere in the Universe.
Scientists believe that a massive “bubble” of ice and dust surrounds the Solar System – this region of space is called the Oort cloud. The Oort cloud is so far away and so hard to reach that most of its secrets remain hidden.
The Oort cloud is a theoretical spherical cloud composed of small icy bodies that surrounds the Solar System. The existence of the Oort Cloud hasn’t yet been proven by direct observation, but it is widely accepted by the scientific community.
The Oort cloud is believed to be home to long-period comets – those that take from 200 to thousands of years to orbit the Sun. In fact, these comets are evidence that the Oort cloud exists. Long-period comets spend most of their life within the Oort cloud. However, they can be occasionally “knocked out” of their orbits by passing stars, molecular clouds, or galactic tides. As a result, they begin to fall into the inner Solar System and become visible as they approach the Sun.
3 Interstellar Comets that include Comet 3/I ATLAS originated from beyond the Oort Cloud.
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