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No.

Almost never happens.

Depends on how well aligned you mean, occasionally all the planets will be within 45° (as seen from the Sun) or within a cone that has the vertex at the Sun and has an opening of 30°, this happens every decade or so.

All the planets can never align less than 2° because the deviation from the ecliptic for some of the planets is greater than this.

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14y ago

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