How big as mass? After some calculations on a slide rule:
> “I’m almost afraid to answer. You would need a good sized asteroid, of lead, to get anywhere at all.”
> “Asteroids have been moved before this.“
> “Yes, but what is to hold it up? No, Chief, there is no conceivable source of power, or means of applying it, that would enable you to hang a big planetoid over a particular spot on the Earth’s surface and keep it there.”
But wait, what about something dense, like core material from a dwarf star?
> “All we would need for that would be a ship capable of going light-years in a few days, some way to mine the interior of a star, and a new space-time theory.”
> “Oh, well, skip it."
Oh, yeah. In this space-age future where people can travel across the Solar System, they also use punched cards.
How big as mass? After some calculations on a slide rule:
> “I’m almost afraid to answer. You would need a good sized asteroid, of lead, to get anywhere at all.”
> “Asteroids have been moved before this.“
> “Yes, but what is to hold it up? No, Chief, there is no conceivable source of power, or means of applying it, that would enable you to hang a big planetoid over a particular spot on the Earth’s surface and keep it there.”
But wait, what about something dense, like core material from a dwarf star?
> “All we would need for that would be a ship capable of going light-years in a few days, some way to mine the interior of a star, and a new space-time theory.”
> “Oh, well, skip it."
Oh, yeah. In this space-age future where people can travel across the Solar System, they also use punched cards.