Answer:
You're best answer is D
Step-by-step explanation:
A = Wrong
If it is a current research this would not be correct, 1995 is wrong because 2020 is 25 years after. They don't know the future.
B = Wrong
New's doesn't explain correct information. It is not credible, they go with what is popular and what they are told.
C: Wrong
This could be right but, It's almost impossible. Also, They would only currently talking about right now. They also probably wouldn't know about the past work.
D = Correct
NASA is a National space organization, They would be very credible. They will go to past information for project and be very credible.
Therefor, D is the best answer.
Yours truly - Annonymus LOL
And Have a nice day, <3