Abstract image of the Earth, with the continents represented by a matrix of dots. ...Read more.

Digital illustration showing a cave on the Moon, with the Earth visible from the opening. Caves have been known on the Moon for some time. Some of them are where lava tubes have collapsed in places, revealing the interior. They would make good places for human habitats. ...Read more.

Humans have been sending space probes, satellites and general miscellaneous materials into orbit around our planet since the late 1950s. Most of these remain in orbit even now, having long served their purpose and been deactivated or else damaged beyond repair. As a result the space around the plane ...Read more.

Humans have been sending space probes, satellites and general miscellaneous materials into orbit around our planet since the late 1950s. Most of these remain in orbit even now, having long served their purpose and been deactivated or else damaged beyond repair. As a result the space around the plane ...Read more.

Humans have been sending space probes, satellites and general miscellaneous materials into orbit around our planet since the late 1950s. Most of these remain in orbit even now, having long served their purpose and been deactivated or else damaged beyond repair. As a result the space around the plane ...Read more.

Humans have been sending space probes, satellites and general miscellaneous materials into orbit around our planet since the late 1950s. Most of these remain in orbit even now, having long served their purpose and been deactivated or else damaged beyond repair. As a result the space around the plane ...Read more.

Europa is one of the four Galilean moons of Jupiter, and the second closest to the planet (after Io). Its surface is a shell of fractured ice but very few craters, as the latter are eradicated by surface movements of the ice almost as soon as they are created. ...Read more.

Europa is one of the four Galilean moons of Jupiter, and the second closest to the planet (after Io). Its surface is a shell of fractured ice but very few craters, as the latter are eradicated by surface movements of the ice almost as soon as they are created. ...Read more.

Europa is one of the four Galilean moons of Jupiter, and the second closest to the planet (after Io). Its surface is a shell of fractured ice but very few craters, as the latter are eradicated by surface movements of the ice almost as soon as they are created. ...Read more.

Illustration of the Europa Clipper spacecraft orbiting Europa, a moon of Jupiter, which is seen in the background. The Europa Clipper launched in October 2024, and aims to conduct detailed observations of Jupiter's moon Europa. Europa is believed to have vast saltwater oceans beneath its ice crust, ...Read more.

Illustration of the Europa Clipper spacecraft orbiting Europa, a moon of Jupiter, which is seen in the background. The Europa Clipper launched in October 2024, and aims to conduct detailed observations of Jupiter's moon Europa. Europa is believed to have vast saltwater oceans beneath its ice crust, ...Read more.

Illustration of Jupiter and two of its largest satellites, Europa (right) and Io (left, smaller). Europa is the smallest of the four Galilean moons of Jupiter, and the second closest to the planet. Its surface is icy and relatively smooth. Impacting meteorites cause melting of the surface, allowing ...Read more.

Stylized illustration depicting the night side of the Earth as seen from space, with the Sun behind it, just peeking over the limb. ...Read more.

Stylized digital illustration depicting the magnetic field of the Earth. ...Read more.

Illustration of the Sun's atmosphere, made visible during a total solar eclipse. The Sun's atmosphere consists of the chromosphere and a much more tenuous and significantly hotter corona (meaning 'crown'). Neither is directly visible from Earth because of the Sun's extreme glare. But during a total ...Read more.