Posts tagged earth-like
For most of us, meteors are by far the ultimate planet killers. All it takes is one direct hit to suddenly wipe all life from the face of a world. But, rather than taking life away from a planet, w...
Is it possible for a earth-like planet to orbit a neutron star & have intelligent life-forms, even if said neutron star 'moves' through different galaxies? as seen in this video - https://www....
Imagine an Earth-like society that has developed into the digital age. They have computers, the Internet and most of the conveniences of the modern age, but they still use a significant animal work...
A large group of people has been banished from Earth and punished to scrape out a perilous existence on a strange planet. The planet has breathable atmosphere, and consists of an immense ocean teem...
I have a parallel universe very similar to Earth but with a society with the technological level of Europe during the Middle Ages. I want this parallel Earth to be one big continent, one giant land...
I'm writing a setting for some fantasy novels, and came up with an idea about weather and climate. The world I'm imagining has an elliptical orbit around a binary system, giving it basically 2 st...
In a world I am working on, I have a wilderness-living, social, group-living species that for various reasons lacks access and ability to anything resembling modern medicine, including vaccinations...
After writing this question about the ecology of a terraformed planet, I realized that I hadn't quite tied up all the loose ends of the terraforming process itself. I intended for a group of aliens...
There have been a few questions about an intelligent avian species lately and they have gotten me thinking. It seems to me that it would be hard for an avian species to evolve to be more intellige...
An idea for a story I'm working on involves a far away world that was once inhospitable. Scientists - likely alien ones - terraformed it so it could support life (coincidentally, Earth-like life). ...
I've been designing a world and wanted to base it on a rather interesting cosmology proposed by the ancient Greek philosopher Philolaus. He was a very early opponent of geocentrism, believing that ...
I know about humans, and how we have adapted to different eviornments with skin and hair color, but I want something a little bit different for my creatures. They are amphibious humanoids, and live...
Would it be possible to have a planet made up of about 60-70% water with no landmasses larger than Australia? I would like this planet to be as earth like as possible, but I'm open to changing aspe...
On an Earth-like planet, there is a massive plateau, standing more than 1km high, and the breadth of a continent in the middle of an otherwise ocean planet. I know there are climactic issues to th...
If I understand correctly, it's highly likely that the planets in a twin-Earth binary planet system would be tidally locked. But is it totally impossible for them to be much farther apart"”say, at ...
If there was to be a habitable planet, similar to earth, but with varying gravity at different points on its surface - lets pretend that it varies from .8g to 1.2g - what sort of terrain or form wo...
Imagine a scenario where the moon is not tidally locked with one side facing the earth but where it is able to rotate about its own axis. This could be due to a larger distance from earth or a mild...
I have an alien species that is my pet project. Now I'm to reproduction, which I have a specific idea for, I'm just not sure exactly how it works. My creatures are aquatic, and everything goes on u...
Given a "parallel" Earth-like world with 9 days to our own 7 days (ie, each day is around 18 hours, 40 minutes), what other differences would one expect/require to be otherwise "normal" and habitab...
I have two binary pairs of planets in a planetary system. All of the planets are habitable, and similar in mass and composition to earth. Each pair is identical, or nearly so. The planets are tidal...
So here's the premise: We have an Earth-like planet, with a civilisation at roughly the same state as ours today. Scientists have been monitoring the atmosphere for centuries, what with forecastin...
If all, or most, fresh water was frozen due to temperature drop over the space of a few generations, what would be the effects on living organisms such as humans and animals? Take in to considerat...
Is there a way for a moon to usually appear relatively similar to our own moon, but occasionally appear much larger from the planet's surface without causing natural disasters due to extreme gravit...
Following up the ideas given in this question, we introduce a new gas to the mix of air. Meta: Assume an Earth-like planet. The proposed change is a pre-development change (meaning it's there sinc...
I have two earth clones, in essence, separated by 16550 miles (26350 kilometers). They are, of course, tidally locked, and orbit each other once every 24 hours. These planets orbit a sun identical ...
I have a planet that I want to have a greenish atmosphere. I've heard in a few places that chlorine gas has the potential to make the atmosphere greenish, but also to kill humans. So, the question ...
A few years ago, an isolated tribe was found in the middle of South America. They seemed to be a normal tribe, but near their village is a lake with a special property- you can breath underwater in...
I am somewhat new to worldbuilding so forgive me if I am not as clear as I could be. I have created a continent, but for relate-ability sake, imagine the US and Mexico, but where the Yucatan Peni...
Right now the Earth rotates around the y-axis so East and West replace one another. What would the affect be on Earth's seasons if it rotated on either other axis? The first is the Z axis, pointi...
I am building a fantasy world roughly the same size, elemental makeup, and atmospheric composition as Earth. In this world, there is an island (about the size of Australia) known by outsiders as th...
I'm building an RPG world and the ice caps are rather large. How big of an effect would it have on the climate and seasons of said world? Would it be slightly colder or would it be similar to an ...
Say an early human civilization is arising on an earth-like planet (Earth, in fact) with one notable difference to the sky: a small ring of debris orbiting the planet. Assume the ring is clearly vi...
My continent features a large canyon, perhaps 100 miles long and mile across. It is deep enough that descending to the bottom is dangerous and impractical. It is located primarily in an arid scrubl...
In our universe, the energy of the sun generates heat and light. This helps keep the earth warm enough for life and drives much of the earth's climate. Warmth slowly bleeds off into the coldness of...
Suppose there's an earth-like planet, perhaps even modern day earth itself - and at one point in time, it began to be bombarded by a continual stream of Electromagnetic Pulses. For the sake of sim...
How can I explain that it only rains at night (i.e. from dusk till dawn) in a certain region? Can or must I make this meteorological phenomenon apply planet-wide? Can or must I restrict rainfall...
What would happen if a planet like Earth were to be tidal locked to the sun? What effects could it have on lifeforms like plants? Would they always produce oxygen?
DISCLAIMER: This question was closed on Astronomy Stack Exchange as off topic, so I'll try my luck here. I'm trying to understand the climatic effects of the far future scenario of an Earth-like p...
My Earth is similar to our real Earth, and some scientists have found out a really cheap way to use geothermal energy. Huge generators are built, but one scientist eventually found out that the Ear...
I've been imagining an RPG universe consisting of eight solar systems orbiting around a black hole in a finite universe with an edge, and I'm wondering what the night sky would look like to beings ...
Consider the present day Earth. Now, through some event (magic, a giant maid with a vacuum cleaner, a disgruntled alien did it, ...), our planet is stripped of its atmosphere. Assume that this happ...
All the worlds I've seen built by me or others have surfaces that are mainly water. Is it possible for a habitable world to exist if the world is mainly land? I'm only talking about 55-65 percent l...
What could make polar areas of an earth-like planet habitable (non desert) and what side effect would it cause (i.e. how such planet would differ to contemporary earth)?
I am trying to build a planetary system with a maximum number of earth/near earth like planets/moons. What would the maximum number of possible earth like planets be? I am assuming that some woul...
Normally, summers are supposed to be hotter than winters because the axis of the Earth is tilted toward the Sun during the hot season. This mean that the north receive more energy from the Sun, day...
On earth our continents move...real...real slow. This is of course a good thing for sentient life. I am trying to imagine/develop a world where...things move a bit faster...ok a lot faster, but i...
A Civilization with semi advanced Technology should be able to start climatic changes on a earth like Planet (same land mass to water surface ratio). What would the fastest way be and How? Some...
So Earth has just suffered a horrible catastrophe and most of civilization is back in a Middle Ages level of development. A few people live on other planets relatively unscathed, with highly advanc...
The long-term theory of climate patterns states that the Earth experiences an ice age, freezing over and remaining so for about 40 years, before returning to a normal, seasonal climate. My question...
On Earth, the polar bear is among the most sexually dimorphic animals, with males being on average almost twice as heavy as females (Wikipedia claims average weights of 450 kg for males versus 260 ...
