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Models suggest that a desert planet (that is to say, a planet with some polar surface water, but otherwise dominated by land), can remain habitable as close as ~0.75 AU from a star with luminosity ...
The spectrum of a main-sequence star results mainly from the surface temperature, which is controlled by the star's mass. As mass increases, the star burns hotter, and as temperature increases, mor...
We have plenty of examples where stars have been hidden by nebulae - and not just newborn stars. Typically, the gas and dust comes from mass loss from one of the stars in the system. Examples inclu...
The planet's life-forms have gone through several stages: Natural development, natural environmental factors such as repeated ice-ages and extinction level events have produced over a significant...
The short answer is: Yes with magic, no without magic. Wouldn't you rather have a magical bowl that is always full with fresh nutritious food, perfectly matched to the species that approaches it? ...
Yes, but not from the link in the question. According to the link in the question, Carbon Dioxide can be used to produce an energy storage medium in a rudimentary way, a bit like the chemical prod...
Enriched Uranium Uranium 235 has a half-life of 703,800,000 years. The concentration of U-235 relative to U-238 is fairly low (0.72%) in nature. Humanity has managed to increase that quite a bit. ...
Automated sensory selectivity, i.e. not passing sensory data to the conscious mind, is the result of evolution. Certain sensory inputs have been deemed irrelevant and thus placed in a sort of secon...
In astrobiology, this concept is known as the 'Superhabitable Planet'. Such a planet would be more massive than Earth, up to about 2.5 Earth masses. This additional mass provides shallower oceans,...
This scenario is quite problematic for two main reasons: evaporation and peak wavelength. The black hole's lifetime is too short We can make a rough estimate of the properties of the Hawking radi...
Stars that become Cepheid variables stay in this phase of their lives for only a short period of time, and after they leave the main sequence. While their properties vary (in particular, Cepheids a...
A good choice is a Mediterranean climate. A Mediterranean climate or dry summer climate is characterized by dry summers and mild, wet winters. The climate receives its name from the Mediter...
They can't be cut down because they're bottle rockets writ large. Their core is a form of solid rocket fuel. As long as an unripened tree is safely encased in their stony bark they're 99.99999% pro...
We're talking hours to days. A good deal of work has been done on protoplanet-protoplanet collisions, mainly focused on testing the Giant Impact Hypothesis for the formation of the Moon. A number ...
Undergarments: I want to be properly supported while flying -- I would want a bra as supportive as a sports-bra, but it would need to clasp-on, like Hawkman's Harness. I agree with @elimtilas on ...
Because of sea monsters/treacherous tides/other impassable conditions, the castaways are unable to safely leave (they might have tried and been turned back). There is a way out but only the villag...
Yes. Although this may be streching your definition of oil a bit. The oil product could host some sort of microfauna that cure the product by building EPS microstructures. https://en.m.wikipedia....
There are two parts to your question. Humans can certainly continue to thrive on earth whether sea level rises or not. We live in quite a variety of climates now. Some climates shifting more tow...
I think I've answered here https://scientific-speculation.codidact.com/posts/292119 . I'll re-post for easy access. Setup I realized that it's possible to design a specific box that's bigger on t...
Earth will be devastated. I'll try to give you a highlevel rundown of what would happen. Rapidly vs. Slowly Yes, the effects would be substantially different. Depending on the speed of fading th...
I know of real-world examples for "weather" in aircraft hangars. Those are huge, but your intended 215km dome is far larger by magnitudes. So if the barrier is right (I cannot suggest something her...
How do steampunk civilizations get lifting gas? What you want is "Synthesis gas". It's what all good fellows with a hunger for flight and adventure need. How shall I make this gas you ask? Wel...
Some plants and animals would focus on the borderlands. While regular shade could exist anywhere, mountains and other large geology would give the deepest shade, enough to change the climate. The ...
The biggest problem with spacecraft is weight. You want things to weigh less and less. So, your halflings have a natural advantage in spaceflight. This means that, while it seems you are fighting ...
Cooking Cooking plant materials takes care of the problem of the grasses being too hard on our teeth or digestive systems. In many cases, breaking down the fibers and so forth will release more c...
