Tag: space

Electric rockets

scaling up that “wireless charging” nonsense to rocket size.

What we propose is, let’s get rid of producing energy on board the launch vehicle and delivery energy by way of microwave beams.

if this works, it is certainly easier to increase energy densities on the ground than on top of a rocket.

Space junk

remember the premise of gravity?

Japan’s space agency will launch a space trawler that will drag a giant aluminium and steel net while orbiting Earth, hoping to bag itself some space junk.

there are 100m pieces of space junk.
2014-04-10:

Asteroids and comets that cross Earth’s orbit pose a credible risk of impact, with potentially severe disturbances to Earth and society. Numerous risk mitigation strategies have been described, most involving dedicated missions to a threatening object. We propose an orbital planetary defense system capable of heating the surface of potentially hazardous objects to the vaporization point as a feasible approach to impact risk mitigation.

including immediate applications like getting rid of space debris as you scale it up.

2014-05-03:

Abandoned artificial satellites. Tanks jettisoned from shuttles. Refuse generated during space station construction. This junk, space debris, is traveling around the Earth at speeds approaching 8 km/s. This is a story of 2075, a time in which this space garbage has become a serious problem. This is Planetes, a near-future hard scifi story that focuses on a small group of debris collectors who are part of a larger company. Both the original manga and the anime adaptation set small personal stories and dramas in the realistic context of near-future space exploration, complete with radiation sickness, impacts of growing up on the moon, and of course, the dangers of space debris.

2015-11-03: this is why we need giant lasers to vaporize that shit.

2019-04-24:

There are 130m tiny bits of debris floating in orbit that, due to their high velocity, can cause catastrophic damage to space vehicles and satellites. Researchers are developing a compact orbiting device to semi-autonomously seek out the debris and catch it in a net.

Antimatter production

we live in a very bipolar world. on the one hand, people continue being idiots at unprecedented scale (largely twitter’s fault: it makes it far too easy for dumb people to be heard and is thus net negative for society), on the other hand we get anti aging, private space companies, clean tech, and now this.

Nuclear fusion or any larger power source that can be put into space combined with superconductors will enable antimatter production that can be 100K to 1M times more efficient in terms of cost than earth based systems.