Planet Lilac

"a brotherhood of man"

What makes up a habitable planet?

There are many factors that make up a habitable planet like the star it revolves around, if there are active volcanoes or not, it's orbit in Astronomical Units, it's mass in comparison to Earth, it's axial tilt, and it's number of moons. A planet needs to have a balance between all of these variables to be habitable.


The star that planet Lilac rotates around is a red giant. Red Giants are stars that have a low supply of hydrogen. This means that the star can only exist for a few billion years until it burns out and swallows the planets around it. But this shouldn't scare you away from living on Lilac!


My planet's orbit is 5 Astronomical Units. I chose this for the orbit because I knew that the planet's life wouldn't be too cold, nor too hot while living on Lilac. (I also didn't want anyone's skin to melt off or freeze up.)


Lilac's mass is five times greater than Earth's! Not only is the weight of Lilac superior to Earth, but the gravity is as well. Let me explain. The mass of Lilac is five times larger than Earth, so the gravity is five times larger on Lilac than it is on Earth. So why is this important? It is five times more effort to do anything on Lilac. But hey, you get a great workout!


Lilac has active volcanoes. This is also beneficial to the soil of the planet because volcanic ash contains materials that are beneficial to plants. This means that we have producers! The magma from the volcanoes release carbon dioxide into the air, and this is what producers feed off of. And if there were no producers, than there would be no oxygen, and that would mean that the planet would not be habitable.


Planet Lilac has producers and liquid water. As I said in the last section, these two things are essential to having any life form on your planet. Producers make oxygen for us to breathe, and we need liquid water to form life.


This planet's axial tilt is zero degrees. This means that there are no seasons on Lilac. The weather and temperature is the same all year round. You might be asking yourself "How does this happen?" Well, the side of the planet that is closest to the sun is warm all year round because it's getting a lot of sunlight, while the side of the planet opposite the sun is chilly all year round because it's not getting much sunlight.


There are three moons that revolve around Lilac in a counterclockwise motion, which are all the same size. They are called Jaturn, Woopiter, and Lars. As you can imagine, three moons will cause very extreme tides on the planet because it's three times the amount of gravity creating a bulge in the ocean. I wouldn't suggest going in the water at the beach!

About the Author

I am Ava McGee, a 12 year old 7th grader at Pennridge North Middle school. For a science project, I designed this Smore, and had a lot of fun making it too! I hope you enjoyed learning about my planet, Lilac!