
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
The satellite atomic clock is the "heart" of the satellite navigation system, playing a decisive role in the positioning and timing accuracy of the system. The domestically produced high-precision satellite atomic clock carried by the Beidou-3 satellite navigation system can ensure that the timing accuracy of Beidou is better than $0.00000002$ seconds globally. The number $0.00000002$ can be expressed in scientific notation as ______.

Present the answer in LaTex format: \boxed{Your answer}
user