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RyderP
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I may be writing a story, set on a rocky planet, 15 times the size of Earth, around a binary dwarf star (one red, one orange). What kind of flora and fauna can I expect?
Add the Todi (insectoids) and the Morrix (delphinoids).RyderP said:And, how about these races:
Human
Elf
Half Elf
Halfling
Ogre
Gnome
Dwarf
Goblin
shihab-kol said:Well, the flora and fauna will vary depending on the type of vegetation you choose i.e. if you want the time-honoured traditional slimy one-eyed species or want to create something fresh, new and unconventional.
Gravity of a planet does not depend on the type of the parent star(s).RyderP said:How much gravity can I expect from a planet orbiting a red and an orange dwarf star?
If you mean 15 times the radius, and assume the same or very similar composition, then it'd by 15 times Earth's gravity. At that size, the planet would also be unlikely to be a terrestial planet any more. It would likely be a dwarf star itself, actually.RyderP said:15 times the size of Earth
Bandersnatch said:Gravity of a planet does not depend on the type of the parent star(s).
All that matters is its size and density. So...
If you mean 15 times the radius, and assume the same or very similar composition, then it'd by 15 times Earth's gravity. At that size, the planet would also be unlikely to be a terrestial planet any more. It would likely be a dwarf star itself, actually.
However, if you mean 15 times the surface area, then the planet would be approx 4 times larger than Earth in terms of radius, and with 4 times the gravity. You could fudge the density a bit to bring the gravity to about 3g, but anything lower than that would be improbable.
As a rule of thumb, you get as many times higher/lower gravity as many times the planet (its radius) is larger/smaller than Earth's.
3g is acceptable. Magnetosphere should not be a problem.RyderP said:So, 3G's okay?
It works for terrestial planets - i.e. under the somewhat stretched assumption of Earth's density. If you want to add density to the mix, then it's another simple linear relationship.stefan r said:However, that rule of thumb does not work.
You said you have dwarfs. All dwarfs must have armor.RyderP said:I'm afraid I don't understand your edit.
"Super-Earths" are exoplanets that have a mass and size larger than Earth, but smaller than gas giants like Neptune or Jupiter. They are often rocky in composition, like Earth, but have a higher gravity due to their larger size.
Scientists use various methods to detect exoplanets, including the transit method, radial velocity method, and direct imaging. The transit method involves observing the dimming of a star's light as a planet passes in front of it, while the radial velocity method looks for slight shifts in the star's motion caused by the gravitational pull of a planet. Direct imaging uses telescopes to capture images of the planet itself. By using these methods, scientists can determine if a "Super-Earth" is orbiting a binary dwarf star.
It is possible for a "Super-Earth" around a binary dwarf star to be habitable, but it depends on various factors such as the planet's atmosphere, distance from the star, and the star's stability. Some binary dwarf stars can have frequent flares and strong radiation, making it difficult for life to exist on planets in their habitable zones.
"Super-Earths" around binary dwarf stars are relatively common, with studies estimating that around 20% of binary star systems may have at least one "Super-Earth" orbiting them. However, more research and data is needed to accurately determine the frequency of these types of exoplanets.
Yes, it is possible for a binary dwarf star to have multiple "Super-Earths" orbiting it. In fact, a recent study found a binary star system with three "Super-Earths" in orbit. However, the exact number of "Super-Earths" that can exist in a single binary system is not yet known, as it depends on various factors and further research is needed.