Naked Universe of Ana

Can absolutely two identical planets form around the same host star?

Added 2024-04-01 10:10:34 +0000 UTC

Well...it's possible, but...haha)

Planet formation begins with the formation of a protoplanetary disk around a young star. This disk is made of gas, dust and ice. Planets form by accreting material from this disk. However, the accretion process is not uniform due to differences in material distribution, density, temperature and pressure in different regions of the disk.

For example, one planet may form closer to the star and be composed primarily of silicates and metals, while another may form further away and contain more ice and gases.

Planets are influenced by external factors, such as gravitational interactions with other bodies in the system or the effects of young stellar winds and radiation.

Because of these reasons, each planet is a unique object with its own structure, composition and characteristics. This makes the probability of the formation of two exactly identical planets extremely low.

On the pic you can see the formation of the host star and planets around it from protoplanetary disk.
Image credit: Bill Saxton/NRAO/AUI/NSF