hdufort t1_j9cyxdw wrote

And we thought Callisto was a dead, boring world. Now we know it has auroras. And perhaps an undercrust salty ocean. Oh, and it might be the place receiving the least amount of radiation that we could potentially reach and colonize (compared to Mars, Ceres, Europa and Ganymede).


hdufort t1_ivh1lpt wrote

Why did Shackleton organize an expedition to Antarctica? Some people are natural explorers and are willing to take huge risks for science, adventure, country, or glory.