Hey there, first I’d like to thank you all for being here! 
The forum here has already become a invaluable resource of information for me. I subscribed to WK only a few weeks ago, but already learned so much.
I also began reading articles of NHK Easy, as many recommended, and I can already understand a lot more than I did 4 weeks ago, but there are still sometimes sentences which I just can’t comprehend from a grammar point of view although I think I know the grammar used. I stumbled upon such a case a few minutes ago, when I read an article published yesterday about the dimming of Betelgeuse. One paragraph begins with:
国立天文台の山岡均先生は「空を見て、ベテルギウスが暗くなったと思った人もいると思います。[…] 」と話しています。
So how would you translate this? What’s irritating me is that double use of 思う.
My crude translations would be something like:
Professor … said: “I think there are people who observed the sky and thought Betelgeuse dimmed. …”
or
Professor … said: “I observe the sky and think there are people who thought Betelgeuse dimmed. …”
Both don’t sound quite right 
I appreciate any comments!
I didn’t find a general post to ask questions about NHK Easy articles, so feel free tell me if there is one or to post other sentences / articles you didn’t understand completely under this topic 