Posts by Jarred Allen
Would it be possible for a planet to have an ecosystem where life lives without ever touching the ground? By this, I mean that the producers (whether by photosynthesis, chemosynthesis, or other met...
Is there a way that, on an Earth-like planet (similar size, mass, composition, resources, moon, climate, star orbit, etc.) some natural process could create and continually renew a Kessler Syndrome...
Would it be possible for an asteroid in solar orbit to go near enough to the Earth that the Earth's atmosphere slows it down into an orbit that is, aside from its low perigee, stable without using ...
As a follow-up to this question: Could an asteroid aerocapture around Earth? The answers seem to indicate that it would be possible for such a thing to happen (an asteroid aerocapturing using the ...
In my story, a portal is opened from the Earth to an alternate world. However, this world is toroidal in shape and has a surface gravity equal to that of Earth. It rotates around an axis that goes ...
For my story, I need there to be a planet close to the home world of my species (in the same star system) that the species could easily get to and easily colonize, but that does not have its own li...
In my universe, gravity varies with the inverse of the distance (instead of the inverse square of the distance). I already know that this means that all circular orbits around the same object will ...
I was reading this article from NASA about chemical rockets and they argue that, with a planet 50% larger than the Earth (assuming similar density, about 1.5G surface gravity), it would be impossib...
