Titan Lithograph

This free NASA e-Book celebrates Saturn as seen through the eyes of the Cassini spacecraft. 

The Cassini–Huygens spacecraft was launched from Cape Canaveral Air Station in Florida at 4:43 a.m. Eastern Daylight Time (1:43 a.m. Pacific Daylight Time) on October 15, 1997, aboard a Titan IVB w...

On October 15, 1997, the Cassini–Huygens spacecraft was launched on an almost 7-year journey to the Saturn system. On its way, Cassini– Huygens passes Venus (twice), Earth, and Jupiter — arriving a...

Because the rockets we now have are not large enough to send a spacecraft as massive as Cassini–Huygens directly to Saturn, and because the spacecraft cannot carry enough fuel to take it directly f...

Launched in 1997 on a nearly seven-year journey, the Cassini–Huygens spacecraft arrives at the ringed planet on July 1, 2004, for a four-year scientific tour of the Saturn system.​ 

On July 19, 2013, in an event celebrated the world over, NASA’s Cassini spacecraft slipped into Saturn’s shadow and turned to image the planet, seven of its moons, its rings — and, in the backgroun...

Enceladus (pronounced en-SELL-ah-dus) is an icy moon of Saturn with remarkable activity near its south pole. Covered in water ice that reflects sunlight like freshly fallen snow, Enceladus reflects...

Cassini–Huygens is a robotic spacecraft: that means that Cassini– Huygens is controlled by people on Earth.​ 

Seeking July 2020 skywatching highlights? Check out giant planets and their moons, Mars rising after midnight and ponder stargazing on the Red Planet.

This newly processed image of Venus revisits original Mariner 10 data with modern image processing software.

Seeking skywatching highlights in June 2020? Look for the Summer Triangle, keep tabs on the morning planets and June 20 brings the solstice.

Known as the "Mother of Hubble," Dr. Nancy Grace Roman was instrumental in taking the Hubble Space Telescope from an idea to reality.

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

The Seven Sisters meet the evening star, Mars continues its getaway, and unpacking the Moon illusion.

A curated just-for-kids NASA video playlist. 

What's Up for March? Planet-palooza in the morning, a "Sirius" look at the Dog Star, and an evening trio at the end of the month.

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...

Candor Chasma in central Valles Marineris is filled with light-toned layered deposits thought to be sandstones.

A relatively young, ice-filled crater near the north pole of Mars.

The geocentric phase, libration, position angle of the axis, and apparent diameter of the Moon throughout the year 2020.

What's Up for January? Morning meteors, Mars meets its "rival," and the Moon comes around for another visit with Venus.

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.