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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Sequence |
In Morse code, letter are made with a sequence of long and short beeps . |
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Assume |
I assume that people will travel to Mars one day. |
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Galaxy |
Earth's galaxy is the milky way galaxy. |
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Intentionally |
A few people believe that the rocket was intentionally destroyed. |
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Signal |
Astronomers are looking for a signal from space. |
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Technology |
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Spaceships |
Some businesses are developing spaceships to take tourists into space. |
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Astronomy |
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Extraterrestrial |
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Estimate |
We can't count the stars in the universe, but scientists can estimate the number. |
