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Just a stupid question I had on my mind... the missions to explore planets seem to jump back and forth with the planets etc. you cannot finish one but get the next one and you do not get the final ones until you started to explore the next planet. I remember they were ok in the past several versions ago though. You waste a lot of time by bringing things back and forth to different planets, especially as some require you to laujnch new probes to planets you already mentally checked as done...

Can you change the sequence in vanilla somehow?
Is there a mod to get them into the right order?