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Scientific Notation
The speed of light is 299800000 m/s. In scientific notation this is written as
2.998 × 108 m/s.
Write the following numbers in scientific notation:
The distance from the Milky Way to the farthest galaxies is 13 000 000 000 ly.
1.3 × 1010 ly
The total number of celestial objects in our solar system is 152 500.
1.525 × 105
The mass of the Sun is 1 990 000 000 000 000 000 000 000 000 000 kg
1.99 × 1030 kg
The age of Earth is 4 550 000 000 years.
4.55 × 109 years