7News Miami46 分钟
Northern lights may be faintly visible across parts of the US this Thanksgiving
This Thanksgiving, solar storms may produce faint auroras across the northern rim of the United States.Pale auroras may be ...
MIT Technology Review19 分钟
The Download: uncertainty over NASA’s moon rocket, and what’s next for nuclear
What’s next for NASA’s giant moon rocket? NASA’s huge lunar rocket, the Space Launch System (SLS), might be in trouble. As ...