O'Sirus System - Blog Posts
O’Sirus System - Post 4 (Rings)
Two planets in the O’Sirus System have rings, the 7th and 10th planets respectively.
The 7th planet is an ice-world with a thick icy crust floating on a sub-surface ocean. It is roughly 0.30 Earth-masses, has a radius 75% that of Earth and orbits 1.32 AU from the sun. The surface has a carbon dioxide atmosphere of approximately the same pressure as the atmosphere of Mars and surface temperatures of 133 K or -224 °F.
The 10th world is small ice giant 10.5 times more massive than Earth, has a radius 2.8 times larger than Earth and orbits at a distance of 6.02 AU. This world also has a pronounced ring system.
High Resolution Pics
Picture 1 - The 7th Planet
Picture 2 - Ring Closeup
Picture 3 - Another Closeup
Picture 4 - The 10th Planet
Picture 5 - Closeup
Picture 6- Ring Transit
O’Srius System - Post 3 (Stunning World)
Here we come across the smaller component of a double planetary system, being the 9 and 10th planets from the star. This planet is by far the most visually stunning world I have come across in the 6 months of playing space engine.
The world is roughly the same size as Earth, but only 0.58 times the mass. The surface is covered in liquid nitrogen oceans and nitrogen ice-caps. The planet has a surface temperature of 68 K or -337 °F. The atmosphere is composed of nitrogen and argon with a surface pressure of 0.095 atmospheres. The surface has a nitrogen cycle, much the same as Earth has a water cycle.
High Resolution Pics
Picture 1 - Crescent
Picture 2 - Gibbous
Picture 3 -
Picture 4 - River Channels
Picture 5 - Varied terrain
Picture 6 - Polar Cap
Picture 7 - Nitrogen Shoreline
O’Sirus System - Post 2 (Weird Life)
The System’s 6th planet, and first world I’ve come across in my journey that has life on the surface. This is one odd life-supporting world. It is a small world, roughly the size of Mars, but only half of Mars’ mass, with a low average density. The atmosphere is 99.8% carbon dioxide and 0.2% oxygen, with a thickness only 4% that of Earth’s atmosphere. The surface has an average temperature of 181 K or -133 °F. And it has one large moon in orbit.
Unfortunately Space Engine only shows life as coloring on the planet’s surface; therefore, I have no idea what form or appearance it has. Based off of the temperatures and atmospheric composition, this the life likely has has a low metabolic rate that uses a liquid other than just water to metabolize, possibly an Eutectic Water-Ammonia solution. Carbon-based if feasible, but involves significantly different chemistry than we are familiar with. The purple coloring likely an adaptation to utilize the low sunlight levels and probably uses primarily red or near infrared light for photosynthesis.
High Resolution Pics
Picture 1 - Planet and Moon
Picture 2 -
Picture 3 - The Equator
Picture 4 - Northern Ice Cap
Picture 5 - Planet, Moon, Sun, Inner Planets and Andromeda
Picture 6 - The Surface
Picture 7 - Moon and Nebula Rising
O’Sirus System - Post 1 (Hellish Moon)
We have gone deeper in the Triangulum Galaxy. We are now only 1,473 light years from the NGC 604 Nebula. Our next system is the O’Sirus System, a dim Orange Dwarf orbited by 12 planets, including 1 world that supports life.
The lone satellite orbiting the third planet. Roughly a third of Earth’s mass with a super-heated water vapor atmosphere. Atmospheric temperatures reach up to 1,000 K (1,340 °F), and glowing clouds of Titanium Dioxide hoover over the moon. The sun is only a K9V type star, but at only 0.11 AU, it covers an area of the sky 7.5 times larger than a Full Moon on Earth.
Space Engine System ID: RS 1229-171-8-11850488-229
High Resolution Pics
Picture 1 - Volcanic moon with glowing metallic clouds.
Picture 2 - Atmospheric Haze
Picture 3 - The Surface
Picture 4 - Lunar Sky
Picture 5 - Eclipse