Activity for curious2220‭

Type	On...	Excerpt	Status	Date
Question	—	Earth-like planet which is smaller but has the same gravity If there were a planet similar to earth where the lines of latitude and longitude were half as far apart (about 35 miles instead of about 70), but the planet's density were increased to compensate for lost gravitational force, how similar to earth could it really be? Would it be possible for weather... (more)	—	about 6 years ago
Question	—	Looking for a way to power a locomotive in a pseudo-1600s fantasy world Assuming a world where there were no steam engines available, would it be possible for large passenger or cargo trains to exist? Would it be possible to use horse-engines to power a locomotive? If the railway planners knew that they had a more limited source of power and had to rely almost entirely... (more)	—	over 6 years ago