Which technological advance has helped scientists to search for life in ,begin emphasis,other,end emphasis, star systems?
Answer options with 4 options
A.
development of planetary landers and rovers
B.
invention of spectrographs to study a stellar rotation
C.
invention of multi-stage rockets for deep space travel
D.
development of radio telescopes to monitor for intelligent transmissions
1 answer
D. development of radio telescopes to monitor for intelligent transmissions