Cosmic radiation is one, if not the most, major obstacle to space colonization. Different proposals have been made to address this issue. However, scientists have discovered that a protein called URI can protect against high dose radiation.
Though this research is done in mice and with the intend to help cancer patients through radiotherapy, it is still highly relevant for human space settlers.
Cosmic radiation is one of the most serious dangers to human spaceflight and hence a serious issue for space colonization. Consequently radiation protection is no luxury for space settlers and without this space colonization is unlikely to succeed.
Researchers at the Australian National University have developed a new nano material that could reflect cosmic radiation. A thin film of the material could provide radiation protection of astronauts and space settlers. Compared to other shielding techniques this material appears to offer a light-weight protection.