RICHARD BIZLEY / SCIENCE PHOTO LIBRARY RICHARD BIZLEY / SCIENCE PHOTO LIBRARY
Habitable alien planet, artwork. This Earth-like planet has two moons and is located near a nebula (background colours). A planet's orbit and its size have to fit within a narrow range for it to have a surface temperature suitable for liquid water, and for it to retain an atmosphere. The background colours are caused by hot young stars heating the dust and hydrogen gas in the nebula.
Model release not required. Property release not required.