Ocean Worlds

RTG fit and test

At the end of the last Apollo 15 moon walk, Commander David Scott (pictured above) performed a live demonstration for the television cameras.

~3.5 minute video explains how Earth's magnetosphere protects us from the fury of the Sun and is essential in allowing Earth to develop into a habitable planet.

Sound waves from the nascent universe, called baryon acoustic oscillations (BAOs), left their imprint on the cosmos by influencing galaxy distribution. Researchers have explored this imprint back t...

Cassini stares deep into the swirling hurricane-like vortex at Saturn's south pole, where the vertical structure of the clouds is highlighted by shadows. 

This visualization shows the orbits of NASA-related near-Earth science missions that are considered operational as of March 2017. 

This video highlights Dawn's top accomplishments during its orbit around the giant asteroid Vesta.

This video takes viewers on a virtual tour of Vesta's south polar basin, the 'snowman' set of craters and a crater called Oppia.

As Huygens descends Titan's atmosphere, Cassini will record the data from 72,000 kilometers (about 44,700 miles).

This three-frame animation from NASA's Cassini spacecraft shows the swirling clouds in a vortex spawned by a great northern storm on Saturn. The clouds are moving in a clockwise direction.

Bennu's Journey is a 6-minute animated movie about NASA's OSIRIS-REx mission, asteroid Bennu, and the formation of our solar system.

The shadow of Saturn's moon Tethys seems to disappear as it crosses the planet's rings, demonstrating variations in the density of particles across the rings.

NASA's Cassini spacecraft has spotted a glowing patch of ultraviolet light near Saturn's north pole that marks the presence of an electrical circuit that connects Saturn with its moon Enceladus.

What can you see in the March sky? Jupiter and other planets in the morning, the start of spring with the spring equinox and viewing an open star cluster called the Beehive.

What's Up for November? Mercury transits across the Sun, and the dimming of the "Demon star," Algol.

This animation shows the last 30 seconds of Cassini's X- and S-band radio signals as they disappeared from mission control on Sept. 15, 2017.

Six years of exploration through the 'eyes' of the Mars Exploration Rover Spirit.

This video explains how our moon creates a solar eclipse, why it's such a rare event to see, and how data from NASA's Lunar Reconnaissance Orbiter has enhanced our ability to map an eclipse's path ...

OSIRIS-REx returns to Earth in 2023 with its precious sample of asteroid Bennu.

Dwarf planet Ceres is shown in these false-color renderings, which highlight differences in surface materials.

For hundreds of years, this gaseous giant planet appeared shrouded in colorful bands of clouds extending from dusk to dawn, referred to as zones and belts.

Lucy will be the first mission to explore the Trojan asteroids – small bodies left over from the formation of the solar system.

After nearly 300 million miles (470 million km), NASA’s Perseverance rover completes its journey to Mars on Feb. 18, 2021. But, to reach the surface of the Red Planet, it has to survive the harrowi...

Atlas Found!

In the 1970s four spacecraft began their one-way trips out of our Solar System. NASA chose to place plaques on Pioneer 10 and 11 and golden records on Voyager 1 and 2 spacecraft. Continuing this le...