Which technological advance has helped scientists to search for life in other star systems?

answer: 0.20

explanation: this can only be the answew because all the other measuremnets are not close

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

like poles repel so keep pushing north to north and repels funny to see this

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19