The crescent Earth rises above the lunar horizon.

This image shows the limb of the Earth at the bottom transitioning into the orange-colored troposphere.

Earth's limb.

An Earth-like planet rises over a rocky and barren alien moon.

An Earth-like planet with an orbiting moon illuminated by a nearby sun.

Artist's depiction of a satellite in orbit around an Earth-like world and moon.

Moon, Venus and Jupiter Conjunction.

Moon, Venus and Jupiter Conjunction.

An Earth-like planet with a pair of moons in orbit.

Gibbous moon and crepuscular rays over Dinosaur Provincial Park, Canada.

Illustration of the city lights on a dark Earth during a solar eclipse.

An astronaut on a barren planet with Earth-like planet in background.

An artist's depiction of a large planet covered by oceans with a thick atmosphere.

Artist's concept of a giant domed city in an asteroid crater on a hypothetical planet.

Eclipse of the Sun in nearby solar system.

A variety of micro organisms have ventured out of the ocean and onto two volcanic calderas.

Partial eclipse of the Sun.

Moments before a total eclipse of the Sun.

The Moon partially obscured by the atmosphere of Earth.