03-16-2019, 09:54 PM
https://www.space.com/halo-drive-black-h...ravel.html
Future spaceships could use black holes as powerful launch pads to explore the stars.
A new study envisions firing laser beams that would curve around a black hole and come back with added energy to help propel a spacecraft to near the speed of light. Astronomers could look for signs that alien civilizations are using such a "halo drive," as the study dubs it, by seeing if pairs of black holes are merging more often than expected.
Study author David Kipping, an astrophysicist at Columbia University in New York, came up with the idea of the halo drive through what he calls "the gamer's mindset."
"Sometimes, in a computer game you find an 'exploit,' a hack which allows you to do something overpowered that would otherwise be forbidden by the rules of the game," Kipping told Space.com. "In this case, the game is the physical world, and I tried to think about exploits that would allow a civilization to achieve relativistic flight back and forth across the galaxy without the vast energy expense that one might naively assume."
I've tried reading the full article, and I can sort of understand how this would work. It's a bit like how space probes often make close approaches to planets, to use them as gravitational slingshots to increase their speed. The main differences are that:
Future spaceships could use black holes as powerful launch pads to explore the stars.
A new study envisions firing laser beams that would curve around a black hole and come back with added energy to help propel a spacecraft to near the speed of light. Astronomers could look for signs that alien civilizations are using such a "halo drive," as the study dubs it, by seeing if pairs of black holes are merging more often than expected.
Study author David Kipping, an astrophysicist at Columbia University in New York, came up with the idea of the halo drive through what he calls "the gamer's mindset."
"Sometimes, in a computer game you find an 'exploit,' a hack which allows you to do something overpowered that would otherwise be forbidden by the rules of the game," Kipping told Space.com. "In this case, the game is the physical world, and I tried to think about exploits that would allow a civilization to achieve relativistic flight back and forth across the galaxy without the vast energy expense that one might naively assume."
I've tried reading the full article, and I can sort of understand how this would work. It's a bit like how space probes often make close approaches to planets, to use them as gravitational slingshots to increase their speed. The main differences are that:
- This technique uses a black hole instead of a planet, and;
- Instead of going near the black hole itself, the ship fires a laser beam near the black hole. The laser beam then comes back to the ship with increased energy.
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