Is a Dyson sphere possible?

Feasibility. Although such megastructures are theoretically possible, building a stable Dyson sphere system is currently far beyond humanity's engineering capacity. The number of craft required to obtain, transmit, and maintain a complete Dyson sphere exceeds present-day industrial capabilities.

How many years would it take to build a Dyson sphere?

That's about 120 trillion years. Of course, that's only the first stage. Going simply by the numbers that Dvorsky provides, without critique or comment, the Dyson sphere would eventually encompass 6.9 x 10^13 square kilometers.

Why are Dyson spheres impossible?

Maddox points out that a Dyson sphere is physically impossible. To keep this shell in orbit around the Sun at any distance in the Habitable Zone would require some force counteracting gravity and pushing outwards on the sphere.

What would a Dyson sphere be made of?

1:579:23How to Build a Dyson Sphere — The Ultimate Megastructure — YouTubeYouTubeStart of suggested clipEnd of suggested clipSo what would it look like a solid shell enveloping the sun is probably not the way to go a largeMoreSo what would it look like a solid shell enveloping the sun is probably not the way to go a large rigid body like that would be vulnerable to impacts possibly shattering it would be liable to drift.

What if we built a Dyson sphere?

0:033:03What If We Built a Dyson Sphere Around the Sun? — YouTubeYouTubeStart of suggested clipEnd of suggested clipThe idea of a Dyson Sphere was well stolen from aliens in 1960 astro physicist Freeman DysonMoreThe idea of a Dyson Sphere was well stolen from aliens in 1960 astro physicist Freeman Dyson theorized another civilization that found a way to meet their ever increasing energy and space demands.

Is a ringworld possible?

To get Earth-like gravity, the Ringworld would need to spin at nearly three million miles per hour. Very fast, to be sure. But in a frictionless space environment, it could be doable. The ring could work up to that speed over time and then maintain it with little additional thrusting.

Would a Dyson sphere block out the sun?

You are confusing a Dyson Sphere with a Dyson Swarm/Bubble/Shell. The does indeed block out the sun entirely, it is a megastructure completely encompassing the star.

How would a Dyson swarm work?

Dyson Swarm: Think of a Dyson Swarm as a series of small robot solar collectors, mirrors, living habitats, and satellites, orbiting like a net around a star. It would orbit a star close enough to collect an immense amount of energy, but not actually enclosing the star itself.

Can you build a Dyson sphere around a black hole?

The strong gravitational field from the black hole separates the pair; one gets inside the event horizon, and the other is emitted as Hawking radiation. If a Type II civilization could build a Dyson sphere around a black hole to use the Hawking radiation, its luminosity wouldn't be sufficient.

Is a halo ring possible?

2:184:10Science of HALO’s Ringworlds (Because Science w/ Kyle Hill)YouTube