Enceladus: Cold Faithful

Unveiling Rogue Planets

An overview video of the OSIRIS-REx mission.

NASA's robotic explorers are helping scientists learn about the weather on Mars.

JPL's Dawn mission is en route to rendezvous with the main-belt asteroids Vesta and Ceres, and is using ion propulsion to get there.

This mosaic strip – extending across the hemisphere that faced the New Horizons spacecraft as it flew past Pluto on July 14, 2015 – now includes all of the highest-resolution images taken by the NA...

Have you ever seen a meteorite streaking across the sky? If so, you may very well have seen part of the asteroid, Vesta!

NASA's Cassini spacecraft, in orbit around Saturn for nearly 13 years, is beginning its Grand Finale — and it's thanks to some Crazy Engineering!  A team of engineers called astrodynamicists use ma...

NASA's Director of Planetary Science, Jim Green, discusses the Jan. 20 Astronomical Journal science paper that points to the possibility of a new "Planet 9" in our solar system beyond Pluto.

January 2021 skywatching highlights: Begin the new year with "perihelion," then catch a glimpse of elusive Uranus and Mercury later in the month.

We know what the Red Planet looks like from the outside – but what's going on under the surface of Mars?

Meet Lucy as she prepares for the first journey to the Trojan asteroids, small bodies orbiting in tandem with Jupiter.

Bob Anderson describes his work as a geologist who helps design and uses robots to collect data about Mars.

Hello, my name is Janelle. I think the best topic is number 2, Titan.

What astronomy highlights can you see in the sky in May 2020? Venus, Sirius and the Milky Way.

This short animation created by Cassini's mission planning team shows how a Titan flyby will be used to move the spacecraft's course from orbiting Cassini's outer ring (F ring) to an orbit that tak...

October 2021 skywatching highlights: Find the Moon with Venus and Arcturus after sunset, and Regulus and Mercury before sunrise. And get to know Vega and Deneb, two of the brightest stars in the No...

This still from a movie shows an image taken by NASA's Dawn spacecraft layered on a digital terrain model of an unusual hill containing a dark-rayed impact crater and nearby dark deposit on asteroi...

This animation shows the Cassini-Huygens spacecraft being captured in orbit at Saturn in 2004.

New science, mined from the archives. Data from NASA's Galileo orbiter launched a generation ago yields new evidence of plumes, eruptions of water vapor, from Jupiter's moon Europa.

This animation based on data obtained by NASA’s Cassini spacecraft shows how the “explosions” of hot plasma on the night side (orange and white) periodically inflate Saturn’s magnetic field (white ...

Hello from Saturn, essentially on the opposite side of the sun as seen from Earth! This annual occurrence called solar conjunction, when Saturn (and Cassini) nearly disappear behind the sun.

This video from NASA's Dawn mission shows that the gravity field of Vesta closely matches the surface topography of the giant asteroid Vesta.

This visualziation shows the major fragments of comet Showmaker-Levy 9 colliding with Jupiter in 1994.

Astronomy highlights for February 2020: it's the best time of the year to view Mercury; Mars disappears behind the Moon; and the bright red star on Orion’s shoulder, Betelgeuse, has been acting wei...

This video describes a computer model that proposes a flow vortex in Saturn's upper atmosphere or ionosphere can explain periodic signatures observed by NASA's Cassini spacecraft in Saturn's magnet...