Kepler-1728b vs. Kepler-78b

Attribute	Kepler-1728b	Kepler-78b
Discovery Year	2021	2013
Mass	Unknown	Unknown
Radius	Unknown	Unknown
Orbital Period	Unknown	Unknown
Distance from Earth	Unknown	Unknown

Introduction

Kepler-1728b and Kepler-78b are two exoplanets that have been discovered by the Kepler Space Telescope. Both planets are located in distant star systems and have unique characteristics that make them interesting subjects of study for astronomers. In this article, we will compare the attributes of Kepler-1728b and Kepler-78b to highlight their differences and similarities.

Physical Characteristics

Kepler-1728b is a super-Earth exoplanet with a radius 1.6 times that of Earth. It orbits a star similar to our Sun at a distance of 0.1 AU, which is relatively close compared to other exoplanets. Kepler-78b, on the other hand, is a rocky exoplanet with a radius 1.2 times that of Earth. It orbits its host star at a distance of 0.01 AU, making it one of the closest exoplanets to its star ever discovered.

Surface Temperature

The surface temperature of Kepler-1728b is estimated to be around 800 degrees Celsius, which is quite hot compared to Earth's average temperature. This high temperature is due to its close proximity to its host star, which results in intense heating of the planet's surface. In contrast, Kepler-78b has a surface temperature of over 2000 degrees Celsius, making it one of the hottest exoplanets known to date. The extreme heat on Kepler-78b is a result of its close orbit around its star, causing its surface to be molten.

Atmospheric Composition

Kepler-1728b is believed to have a thick atmosphere composed mainly of hydrogen and helium, similar to gas giants in our solar system. This atmosphere helps trap heat on the planet, contributing to its high surface temperature. On the other hand, Kepler-78b is thought to have a very thin or nonexistent atmosphere due to its close proximity to its star. The intense radiation from the star would have stripped away any gases that were present, leaving the planet with a bare rocky surface.

Potential for Life

Due to its high surface temperature and lack of a suitable atmosphere, Kepler-1728b is not considered a habitable planet for life as we know it. The extreme conditions on the planet make it unlikely for any form of life to exist. Similarly, Kepler-78b is also not a candidate for life due to its scorching surface temperature and lack of atmosphere. The harsh conditions on both planets make it challenging for any life forms to survive.

Conclusion

In conclusion, Kepler-1728b and Kepler-78b are two fascinating exoplanets with unique characteristics that set them apart from each other. While Kepler-1728b is a super-Earth with a thick atmosphere and relatively high surface temperature, Kepler-78b is a rocky planet with an extremely hot surface and no atmosphere. Both planets offer valuable insights into the diversity of exoplanets in our galaxy and the extreme conditions that can exist in distant star systems.