Most any definition of life would not include a planet as a living being; only the organized anomalies within or on it would be “living beings”. But we cannot rule out a planet that is technically so organized as to be alive and possible of some sort of evolving replication phenomena.
Note: Earth would be considered a facilitator and harborer of living beings, but that’s about as close as it comes to “being alive”.
The Broad Spectrum Life 
Oh ,this is a mysterious question still now.dear!!
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Indeed. We have yet to observe and understand enough to define “life” properly, let alone know what forms exist in the cosmos.
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Wonderful.
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Wonderful efforts for the research.
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