RS 8513-928-8-5794238-357 6 : A FRIGID AQUARIA WORLD IN THE COSMIC WILDERNESS

 Today, I stumbled upon one of the most fascinating planets in my Space Engine explorations - a frigid aquaria world cataloged as RS 8513-928-8-5794238-357 6. This distant world is around 0.40 AU from its star

Physical Characteristics:

What immediately caught my attention was this world's impressive size. With a radius of 7,454 km (about 1.17 times Earth's radius), it's significantly larger than our home planet. Despite its size, the gravity is only 0.74 g, making it an interesting candidate for exploration.

The planet features a striking ring system, as you can see in the images. These golden-hued rings create a dramatic silhouette against the starry background, somewhat reminiscent of Saturn but with their own unique character.

Composition and Structure:

Diving into the data, this frigid world has a fascinating internal structure:

• 38.4% water/icy envelope
• 37.7% silicate mantle
• 24% metallic core

Its atmosphere is predominantly nitrogen (99.5%), with trace amounts of water vapor (0.243%), carbon dioxide (0.209%), and various other compounds including hydrogen, ammonia, and methane.

Climate Conditions:

With an effective temperature of -202.75°C, this is truly a frozen world. Even at "tropical" regions, temperatures barely rise above -172°C. The planet experiences a modest greenhouse effect of just 2.32°C, and its characteristic global wind speed is 11.52 m/sec.

Orbital Characteristics:

This frigid aquaria completes an orbit around its parent star every 243.25 Earth days and rotates on its axis with a period of approximately 23 hours and 27 minutes - remarkably similar to Earth's rotation period. Its axial tilt of 19°24'51.74" would create seasonal variations, though given the extreme cold, these would manifest differently than Earth's seasons.

Age and History:

Perhaps most intriguing is the planet's age - approximately 10.9 billion years. This makes it considerably older than Earth (4.5 billion years), suggesting a long and complex evolutionary history.

Five Bizarre Features That Defy Expectation:

1. A Paradoxical World:

Despite being classified as an "aquaria" planet, every drop of its substantial water content is frozen solid at temperatures hundreds of degrees below freezing. It's essentially a water world where traditional oceans cannot exist.

2. Earth's Time Twin:

In a remarkable cosmic coincidence, this planet rotates in almost exactly the same time as Earth (23h 27m vs Earth's 23h 56m) despite forming in a completely different star system billions of years before our own planet existed.

3. Ancient Beyond Imagination:

At 10.9 billion years old, this planet has existed for more than twice Earth's age. It formed when the universe was only about 3 billion years old and has outlasted countless stars that have since been born and died.

4. The Golden Rings Mystery:

Unlike the icy white rings of Saturn, this planet's rings have a distinctive golden-brown appearance. This unusual coloration suggests a composition or contamination unlike anything in our solar system.

5. Survival in a Near-Vacuum:

Despite the incredibly thin atmosphere (0.026 atmospheres), the planet maintains a complex atmospheric chemistry with various organic compounds. The mechanisms that preserve this delicate balance across billions of years present a fascinating puzzle.

Exploration Potential:

Though its extremely low temperatures and primarily nitrogen atmosphere make it inhospitable to Earth life, the substantial water content and Earth-like day length present intriguing questions about potential subsurface environments.

What cosmic treasures have you discovered in your Space Engine travels? Let me know in the comments below!

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