The identification of strontium (锶) in the kilonova wreckage, an element that could only have been synthesized so quickly under an extreme neutron flux, provides the first direct spectroscopic evidence that neutron stars comprise neutron-rich matter. Nature.574.497 10月23日文
Astronomers have discovered the most massive neutron star (J0740+6620 2.14M⊙) to date, a millisecond pulsar approximately 4600 lys from Earth. Nature Astronomy 10.1038/s41550-019-0880-2
人类社会只是硅基文明的一段开启程序 Elon Musk: Humanity Is a Kind of "Biological Boot Loader" for AI 人类是人工智能的一种生物引导程序 For those who don't know what a boot loader is, it's a very tiny piece of code without which the computer cannot start. But it's sort of like the minimal bit of code necessary for a computer to start. Like you couldn't evolve silicon circuits—there needed to be biology to get there. https://www.wired.com/story/elon-musk-humanity-biological-boot-loader-ai