Countless shining lights seen at night on the sky are; ________.
On ________ soviet Cosmonaut Yuri Gagarin becomes the first human to enter space and return safely.
GPS stands for ________
United States launches explorer-1 to explore Van Allen radiation belt ________.
How long does it take for a geo-stationary satellite to complete one orbit?
Soviet Union launches 1st ever Sputink 1 on ________.
Neil Armstrong became the first man to walk on the moon in Apollo-11 mission on ________.
The first artificial satellite was sent into space in:
First man to step on the moon?
The system locates the position of an object on the Earth surface is:
Through cell phone, we find the position on the earth within ________meter accuracy.
First piece of the International Space Station is launched on ________.
Completion of Global Positioning System (GPS) in _________.
Unmanned spacecraft, a robotic rover “Curiosity” landed on Mars. It was launched on ________ to explore the environment of Mars.