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The title is a bit different to the question, but there's a reason to that. I am currently in the worldbuilding stage of creating an alien planet, mainly the wildlife, and I may have run into a pro...
At the current pace of technological advancement, when would humans be able to build an interplanetary telescope array? This telescope doesn't have to be that huge; building one spanning Earth, Mo...
With technology it is possible to detect Gravitational waves as Gravitational waves have been detected by LIGO. Could a species evolve to have a sense organ for detecting Gravitational waves? Wha...
A team of alien researchers get bored one day, and decides to conduct an experiment. Seeing that the great ape Homo sapiens sapiens turned out so well ( in terms of technological development and ...
EDIT: Question has been altered significantly in terms of design (originally having been a 'what-if'). This should (hopefully) accommodate more grounded and specific answers. Science often prefers...
Suppose you were an astronaut on a space ship in the near future. Or an on an asteroid mission where little to no gravity is available. In such a situation it would be difficult to justify taking a...
Imagine we have a faster-than-light drive which costs ~$250,000 USD per drive and can propel an ISS-sized craft at 1000 times the speed of light. It is reliable and has safeguards that stop it from...
We all know the Kardashev Scale , and the energy output required to get to each level , but what would be the best way to transport those amounts of energy? I have come up with ways to distribute e...
I was thinking of a situation in which a creature lives in a region in which the levels of radioactivity varies from harmless to lethal from place to place and time to time. It takes millions of y...
I'm looking for some data to create my own sci-fi setting, but I want to base it on real world as much as possible. Also, I don't want to come up with any arbitrary year like 3290 with no backgroun...
Giants do exist. It's just that they can't be anywhere close to being as big as those in Norse mythology or the story of Jack and the Beanstalk. The best we'd ever have for a giant was Robert Wad...
I was wondering if a full aquatic bird could exist and not be on, or return to land at any developmental stage, basically, to be completely independent of land. I already know that there are some a...
If a substance at Absolute Hot and a substance at Absolute Zero collided, what would happen to the resulting mixture?? Assume this was done on Earth in a sort of collision facility. I'm working o...
I have two binary planets, with technological level of about the present day. They've developed communication between the two planets, and scientists are trying to develop a method of getting peopl...
I understand that Carbon, Hydrogen, Oxygen, and Nitrogen are the source of a lot of great cheap chemistry and I understand why aliens could be made out of those elements. I don't understand though ...
This theory, what I call the world shift theory, states that the Earth's original orbit was solar stationary at one of its poles constantly facing the Sun, building, over time, the magnetic poles. ...
Let there be an earth-sized planet with a rotational period of just over 3 hours and 38 minutes described by David Hammen here . On this oblate spheroid, with nights lasting for an hour and 49ish m...
I'm working on a story set in a generation ship traveling through the stars. Its propulsion is a solar sail, which will accelerate it over many decades to a substantial fraction of the speed of lig...
In one of my fictitious planets, there are large cells that reside in the ocean and are 3 feet (almost 1 metre) in diameter. The cells themselves are aggregates of many amoeboid cells, have only on...
Let's say we have a society that for some reason (a MacGuffin, Unobtanium, Handwavium, whatever) have found a way to travel off the earth without having to fight gravity along the way. They can tra...
One thing that has always bothered me in robot-controlled AI stories is that there is always the assumption that the AI would choose to fight a conflict against humans on Earth, where humans domina...
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 in the process of creating my universe, and have based it on semi-hard science. The universe that I have created is quite extensive, and I thought that it would be unreasonable for the only ki...
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 ...
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...
