NASA scientists have discovered the secret of the contraction in the sizes of a number of planets outside our solar system in a phenomenon that surprised them. While this phenomenon is not a coincidence, the study published in The Astronomical Journal addressed several theories that explain it. Exoplanets range from giant gas bodies to rocky planets.
The problem lies in discovering an unexplained gap in the sizes of these planets, as some of them are more than twice the width of the Earth. Scientists have linked this gap to the contraction of sub-planets such as Neptune, and this phenomenon is due to their loss of atmosphere. Researcher Jesse Christiansen from the California Institute of Technology also pointed out the role of radiation from the hearts of planets in pushing the atmosphere away into space.
Accordingly, the study focused on the idea that the force of planets pushing their atmosphere creates conditions that hinder the preservation of atmospheric gases close to the planet, and this is especially true for exoplanets that suffer from a lack of mass and gravity. The study proposed some interesting hypotheses such as “core energy mass loss” that occurs when radiation is released from the planet’s core pushing the atmosphere from below. The second hypothesis is “photoevaporation,” where the planet’s atmosphere dissipates as a result of the radiation force generated by its host star.
In the end, these hypothetical ideas remain merely proposals that are subject to subsequent study and scientific confirmation. These discoveries may be a new door to our understanding of the process of planetary formation and evolution in space, enhancing our current knowledge in this field.
FAQs:
What is the theory of the existence of Earth-sized planets in space?
This theory is one of the hypotheses that scientists are exploring, as they link discoveries indicating the presence of small Earth-sized planets in space to several factors, including the presence of suitable conditions for life and the occurrence of suitable weather conditions.
Does the discovery of contracting planets mean the existence of life outside Earth?
Although the discovery of contracting planets may shed light on many factors that influence planetary formation, it does not necessarily mean the existence of extraterrestrial life. However, upcoming discoveries and studies may help us understand the possibility of life in space.
Does planetary contraction affect the space environment?
Planetary contraction may have a slight impact on the space environment, such as changing the distribution of atmospheric gases and some other atmospheric factors. However, these results need further research and analysis to confirm their actual effect.
Source: Al Ain News
