NASA uses a system of ground-based radio antennas to communicate with dozens of active spacecraft and study celestial bodies.
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How does NASA use radio waves to study celestial objects?
VnExpress•09/08/2023NASA uses a system of ground-based radio antennas to communicate with dozens of active spacecraft and study celestial bodies.
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![[Photo] "Lovely" moments on the 30/4 holiday](https://vphoto.vietnam.vn/thumb/1200x675/vietnam/resource/IMAGE/2025/5/1/26d5d698f36b498287397db9e2f9d16c)
![[Photo] Binh Thuan organizes many special festivals on the occasion of April 30 and May 1](https://vphoto.vietnam.vn/thumb/1200x675/vietnam/resource/IMAGE/2025/5/1/5180af1d979642468ef6a3a9755d8d51)
![[Photo] Ha Giang: Many key projects under construction during the holiday season](https://vphoto.vietnam.vn/thumb/1200x675/vietnam/resource/IMAGE/2025/5/1/8b8d87a9bd9b4d279bf5c1f71c030dec)
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![[Infographic] Series of activities to celebrate the 50th anniversary of Southern Liberation and National Reunification Day](https://vphoto.vietnam.vn/thumb/402x226/vietnam/resource/IMAGE/2025/4/21/47dbbbcc1b264b258e3d77c26b034a65)
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Heaven and earth in harmony, happy with the mountains and rivers
Fireworks filled the sky to celebrate 50 years of national reunification
50 years of national reunification: The checkered scarf - the immortal symbol of the Southern people
The moment the helicopter squadrons took off
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