How many planetary exploration missions are there, and where are they? These days, it's hard to keep track, because there are so many. I plan to begin the new year by taking stock of active missions, figuring out what each has set out to do and accomplished so far, but first I want to step back to consider the spread of missions across the solar system as a whole.
from Planetary Society Blog http://ift.tt/1OnEfUV
via IFTTT
沒有留言:
張貼留言