For instance, asteroids have iron and nickel which could be utilized to satisfy the (6) ______________ for metal.

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CÂU HỎI KHÁC

• Space Exploration is the investigation of the universe beyond Earth’s atmosphere by (1) _______________ of manned or unmanned spacecraft.
• Despite the technological advancements achieved in the past, space exploration was only (2) ________________ until the 20th century.
• When the topic “SPACE OPERATION” is put (3) _______________ the table, a question has often been asked:
• “Why should we spend money on NASA while there are so (4) ______________ problems here on
• The advantages of space exploration include the materials (5) ______________ can be obtained from outer space.
• For instance, asteroids have iron and nickel which could be utilized to satisfy the (6) ______________ for metal.
• Therefore, numerous commercial companies have invested in developing technology for asteroid mining. Several comets and asteroid (7) ______________ solid water in them.
• The water can also be broken down to hydrogen which can be used as (8) _____________ for the rockets.
• Scientists also believed that dinosaurs disappeared because they couldn’t go to (9) _____________ planet.
• Fortunately, (10) _____________ we have knowledge about comets and space science, we will be able to survive.