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Does intelligent life exist elsewhere in the universe, and it is like us? The fact that we are discovering terrestrial planets around other stars in and near the stars' habitable zones is a promising step in our quest to answer this question. Shown here is a sister Earth with a thriving technological civilization.

Lynette Cook is a self-employed scientific illustrator who has focused on exoplanets and life in space throughout her professional career. She is a Fellow of the International Association of Astronomical Artists. More artwork by Cook is at http://extrasolar.spaceart.org.

Lynnette Cook is a member of the International Association of Astronomical Artists.