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  1. Let's imagine a planet which has sun and moon whose apparent size is same, just like in Earth. If the lengths of the year, month and day on the planet were same, then the planet would always turn same side to the Sun. Moreover, if the moon was all the time between sun and the planet, then in the center of the light side there would be eternal solar eclipse. The climate of this area would be cold, so it would come some kind of third pole of the planet. Is borning of that kind of planet (same year, month and day) in practice possible. Another question: what kind of combination of year, month and day there should be, that in some area of the planet there would be eternal solar eclipse in the day, but also normal night so that sun would rise and set moon all the time in front of it.
  2. What do think, is there yet any possibilities to discover big unknown celestial bodies in our solar system INSIDE the orbit of Pluto. What if for example there was a planet same size as Pluto, but nearer the Sun, whose orbit plane was 90 degrees from other planets plane. I don't know how this kind of planet could have been born, but could it be not yet discovered.
  3. What do think how big meaning it's for developing the life on Earth, that gravity is just 1 G. Small differences would surely have been disadvantage to developing of life, but what would be the appearance of creatures on the planets with f.ex. 0.5 G or 2 G.
  4. What do think what kind of psychological influence to people it would be to see huge disk of celestial body in the sky. For example 20 degrees. Our Sun's and Moon's apparent size is less than 1 degree. Astronomically this situation is possible if one would live on the moon of a giant planet. If some people wouldn't dare to be outdoors when this disk would be in the sky, what was the name of this phobia.
  5. In which exact location do you think that your consciousness be. In the brain of course but at least I think it's in the centre of the frontal lobe of the brain.
  6. Changing of orbits of big celestial bodies is impossible with this millennium's technology, but what about small moons of planets and asteroids. I think that the most interesting idea would be to try drop Martian moons, Phobos and Deimos down to Mars surface. Do you guess this would be succeed. The nuclear bomb is surely the only instrument what could be used. If Phobos and Deimos would fall down to Mars, what influence would this have to Mars climate.
  7. What do you think if human now would extinct, what influence it would have Earth's flora and fauna. In particular, how big possibilities would the apes have to reproduce and disperse on the our planet. Which ape would have the best possibilities: chimpanzee, gorilla or perhaps orang. Would the disappearance of human to accelerate evolution of apes' intelligence.
  8. What do you think, what's the maximum size of solid planet. Earth is yet the greatest known solid body in the universe. In what situation and around what kind of star would a giant solid planet be born.
  9. What if Earth had another moon. What would be the upper limit of it's size, that it's orbit yet would be stable. In which distance another big moon best would maintain it's orbit. Another interesting question: let's forget another moon, but let's move our present moon nearer the Earth. How near it would come that it's orbit would be stable and it would not yet disturb Earth's revolving around the Sun. If the size of our Moon would be smaller, it's minimum distance could of course be smaller. How near would for example 100 km diameter Moon revolve Earth. It's also interesting to think what kind of scientifical or another meaning this small near moon would have to our society.
  10. All big planets are spheres, but it's interesting to think what kind of gravity it would occur on the different parts of the surface of other shaped planets. For example cube, cylinder, cone, pancake or torus
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