ইউটিউব চ্যানেল লাইক দিন NASA STI Program


1,320,000 4.26%

1,150,000 3.03%

19,800 0.98%

9,470,000 2.63%

4,760,000 1.7%


1,150,000 2.0%

1,030,000 3.35%

2,360,000 3.11%

10,500,000 3.02%

5,970 3.68%


43,400 4.13%

6,060 0.79%

25,200 4.75%


72,200 1.22%


62,000 2.35%

132,000 2.19%

10,100,000 2.99%

33,000 3.17%

187,000 2.45%

3,210,000 2.78%

364,000 4.22%