Planetary Science Division Overview by Jim Green

NASA JPL Software Engineer Melissa Soriano describes the third potential target for Scientist for a Day contestants: Pluto's moon Charon.

NASA Oceanographer Yackar Mauzole describes the first potential target for Scientist for a Day contestants: Uranus' moon Miranda.

NASA/JPL Science Writer Jay Thompson outlines the challenges in the latest Scientist for a Day essay content.

NASA Chemist Sabah Bux describes the second potential target for Scientist for a Day contestants: Neptune's moon Triton.

Terraced hills in Arabia Terra, Mars, as seen by NASA's Mars Reconnaissance Orbiter.

What can you see in the December sky? Beautiful pairings of planets and the crescent Moon throughout the month, at sunrise and sunset.

The International Space Station makes a trail of light in front of the Milky Way in this long exposure image.

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

Our galaxy, the Milky Way, is seen above the Doll House in this National Park Service photo from Canyonlands National Park.

Studying Venus not only teaches us about our own planet, but also about many planets beyond our solar system.

What can you see in the October sky? Join the global celebration of International Observe the Moon Night on Oct. 5th, then try to catch the ice giant planets Uranus and Neptune.

Learn more about black holes, how to find them and how to stay safe should you ever get a chance to visit one.

This image taken by the Mars Reconnaissance Orbiter spacecraft shows sedimentary rock and sand within Danielson Crater, an impact crater about 42 miles or 67 kilometers in diameter, located in the ...

The latest view of Saturn from NASA's Hubble Space Telescope captures exquisite details of the ring system.

An avalanche near the north pole of Mars, as observed by the HiRISE instrument aboard NASA's Mars Reconnaissance Orbiter.

In this month's sky, look for lovely crescent Moons at the start and end of the month. The September equinox brings the beginning of fall in the Northern Hemisphere. And Mars is at solar conjunctio...

How can you communicate with Mars spacecraft when the Sun is in the way? Learn more about 'solar conjunction' in this 60-second video.

This new Hubble Space Telescope view of Jupiter, taken on June 27, 2019, reveals the giant planet's trademark Great Red Spot.

What's Up for August? This month our main focus is the Perseid meteor shower.

A scaled down version of our popular series of exploration posters.

A full-sized, 363-foot Saturn V rocket is projected onto the east face of the Washington Monument.

The Moon sets behind the Jefferson Memorial in Washington 50 years to the day after astronauts Neil Armstrong, Michael Collins, and Buzz Aldrin launched on Apollo 11, the first mission to land astr...

Winds around Jupiter's Great Red Spot are simulated in this JunoCam view that has been animated using a model of the winds there.

Astronaut Buzz Aldrin, lunar module pilot, is photographed during the Apollo 11 extravehicular activity on the lunar surface.

As NASA marks the 50th anniversary of the Apollo 11 Moon landing, here are five things to know about the Moon that you can share with others.