Yes, there is a retirement plan for ageing Mars colonist. it is called Solent Green.
Not as far fetched as you might think. The conservation and recycling of organics may be the make or break factor of a colonies long term survival.
I have a couple of ideas, probably totally impractical as stand alone businesses, probably best as minor incidental side lines to some other more substantial businesses.
1. This one is dependent on some kind of regular earth-moon transport. There are lots of rock collectors on earth. Many...
That is an easy one to answer. There is a lot of energy released due to gravitational potential as a gas cloud collapses on itself. When an interstellar gas cloud begins to collapse and the gas particles move closer to the center of gravity energy is released in the form of heat. It works on...
It would be surprising if the sun did not stray a bit from the galactic plane. Not all stars would have formed exactly in the galactic plane, and all such stars ( the majority in any galaxy) would naturally have an orbit that fluctuates above and below the galactic plane. Also the Milky Way...
New Manuel
of the
Elements of Astronomy
by
Heny Kiddle, A. M.
1867
177. That part of the moon’s surface which is turned toward the earth has been very carefully observed, and all the objects upon it delineated upon maps or charts, so as to show their exact forms and relative positions. This...
The existence of a singularity in a black hole has always been only a theoretical assumption, not a proven point. In truth, no one know exactly what you would find inside a black hole.
Perhaps we should eliminate asteroids and comets too. They are just cluttering up space. If we merge them all with Mars we might get a halfway respectable planet out of it.
New Manuel
of the
Elements of Astronomy
by
Henry Kiddle, A. M.
1867
155. Theories as to the Physical Constitution of the Sun -- The most generally received hypothesis as to the nature of the sun is that it is an opaque body surrounded by an atmosphere of luminous matter, and that the spots...
I am in possession of an 1867 college level astronomy text book.
The following are its final paragraphs before the Appendix in the book which presents a summation of the nature of the universe as a whole as understood in 1867.
379. Structure of the Universe. -- The universe has been...
While we are downsizing the solar system, a little rearranging might be in order too. Let's face it, Saturn is just too far away. Without a telescope you can't see those wonderful rings. Let move it nearer, put it where Mars is now so everybody can go out on a clear night and see the rings...
Single Planet definition:
Without regard to any sub-classification such as rocky, gas, ice, giant, dwarf, etc., a planet is a non-stellar body that (1) is in hydro-static equilibrium, and (2) whose orbit is at all points concave to its sun.
Double Planet Definition
Type "A" Double Planet: Two co-orbital planetary bodies both having orbits at all points concave to their sun, and each of which are also gravitionally pulled into a hydrostatic equilibrium shape. Example: the Earth/Moon system.
Type "B" Double Planet: Two co-orbital...