The fifth planet from the Sun and the largest planet in our solar system. Jupiter orbits the Sun at an average distance of 5.2 time Earth's distance (about 465 million miles/745 million km). The planet has a mass 318 times the mass of Earth and a radius 11.2 times the radius of Earth. Jupiter is a gas planet and has no solid surface. It is made of hydrogen and helium, with trace amounts of ammonia, water vapor, and methane. The most recognizable features of the planet are its bands of clouds and a giant storm visible from Earth called the Great Red Spot. Jupiter has more than 60 known moons, the largest of which are Io, Europa, Ganymede, and Callisto.


Jupiter's Moons Jupiter has 62 known moons. The four Galilean...
Realm of the Giants The region beyond the asteroid belt is the realm...
Jupiter Weather systems on Earth blow themselves out in...

Featured Images

Artist's concept of Galileo Jupiter probe
Dropping In Wednesday, December 30, 2015
Cassini view of Jupiter from 6 million miles
Turbulent Giant Friday, February 6, 2015
Jupiter's radiation belts
Jovian Shields Wednesday, October 15, 2014
Hubble Space Telescope view of Jupiter, Ganymede
Layer-Cake Moon Friday, August 15, 2014
Artist's concept of comet impact on Jupiter
Strike One! Wednesday, July 16, 2014
Hubble views of Jupiter's Great Red Spot
Shrinking Storm Thursday, May 15, 2014
Voyager 1 view of Jupiter's cloudsk
Artistic Clouds Thursday, November 1, 2012
Voyager mission enhanced-color image of Jupiter's Great Red Spot
Planetary Impressionism Sunday, February 26, 2012
Jupiter's Great Red Spot and the planet's four largest moons
An Eyeful of Moons Monday, January 2, 2012
Artist's concept of Juno at Jupiter
Jumping Off for Jupiter Friday, August 5, 2011
Phobos, one of the moons of Mars, passes by the planet Jupiter.
Out of Order Monday, June 20, 2011
The aftermath of an asteroid impact in the southern hemisphere of Jupiter
Giant Scar Monday, September 20, 2010
High Lights Sunday, January 17, 2010

Radio Programs

Moon and Jupiter Dropping in on Jupiter Wednesday, December 30, 2015
Cloudy Skies Cloudy skies across the solar system Sunday, December 27, 2015
Moon and Jupiter The master of a busy domain Thursday, December 3, 2015
Moon and Jupiter Jupiter loses its status Saturday, May 23, 2015
Moon in the Middle Passing through a bright triangle Saturday, March 28, 2015
Moon and Jupiter Adding color to a giant planet Monday, March 2, 2015
Jupiter at Opposition A big showing for a big planet Friday, February 6, 2015
Brackets Bright lights bracket the evening sky Sunday, February 1, 2015
Moon and Jupiter Measuring the solar system with a ruler Wednesday, December 10, 2014
Moon and Jupiter Clouds of dust around a giant planet Thursday, November 13, 2014
Moon and Jupiter Traveling to a deadly planet Wednesday, October 15, 2014
Impact! Cosmic missiles slam into Jupiter Wednesday, July 16, 2014
Moon and Jupiter A study in contrasts in the evening sky Sunday, June 1, 2014
Moon and Planets Squashing a giant planet Saturday, May 31, 2014
Moon and Jupiter Building a solar system giant Sunday, March 9, 2014
Moon and Jupiter Creating a powerful magnetic field Monday, February 10, 2014
Jupiter at Opposition Pacing off the distance to a giant Sunday, January 5, 2014
Getting Close Snuggling close to two giants Friday, January 3, 2014
Moon and Jupiter Heating up a giant planet Wednesday, December 18, 2013
Pioneer 10 at Jupiter Going eye-to-eye with a giant Tuesday, December 3, 2013
Moon and Jupiter The king of the Olympics Thursday, October 24, 2013
Journey’s End A long journey comes to an end Saturday, September 21, 2013
Moon and Jupiter An adventure traveler’s idea of heaven Friday, August 30, 2013
Bright Contrasts Different worlds with a similar look Monday, May 27, 2013
More Moon and Jupiter The dusty space around Jupiter Sunday, May 12, 2013
Moon, Jupiter, and Aldebaran Jupiter’s large adopted family Monday, February 18, 2013
Moon and Jupiter II Lighting up the Christmas-night sky Tuesday, December 25, 2012
Moon and Jupiter Bright lights for Christmas Eve Monday, December 24, 2012
Jupiter at Opposition II Jupiter proves its superiority Sunday, December 2, 2012
Jupiter at Opposition A jovial denizen of the night sky Saturday, December 1, 2012
Moon and Jupiter Cloudy skies on a giant planet Thursday, November 1, 2012
Moon and Jupiter A planet that’s a gravitational powerhouse Thursday, October 4, 2012
Jovial Water Worlds Giant oceans around a giant planet Thursday, September 27, 2012
Moon, Jupiter, and Aldebaran The Moon takes a pounding Friday, August 10, 2012
Moon and Jupiter A giant planet’s disappearing heart Sunday, April 22, 2012
More Venus and Jupiter Worlds with and without companions Monday, March 12, 2012
Venus and Jupiter Following a pair of cosmic headlights Sunday, March 11, 2012
Moon and Planets III Artistry on a planetary scale Sunday, February 26, 2012
Moon and Jupiter The master of a busy domain Monday, January 2, 2012
More Moon and Jupiter Warming up a giant planet Wednesday, November 9, 2011
Moon and Jupiter Powering up a distant aurora Tuesday, November 8, 2011
Brilliant Jupiter Shining some light on a dark giant Thursday, October 27, 2011
Moon and Jupiter An ancient god and the modern calendar Thursday, September 15, 2011
More Moon and Jupiter Jumpin' Jupiter! Saturday, August 20, 2011
More Juno Getting to know an atmosphere Tuesday, August 2, 2011
Juno Looking into the heart of a giant Monday, August 1, 2011
More Moon and Jupiter The solar system's 800-pound gorilla Saturday, June 25, 2011
Moon and Jupiter Changing concepts of a giant world Friday, June 24, 2011
More Moon and Jupiter Cutting through the static Sunday, May 29, 2011
Moon and Jupiter Shielding an entire planet Saturday, May 28, 2011
Venus and Jupiter Twin headlights in the dawn sky Monday, May 9, 2011
Mercury and Jupiter Big and small in the evening sky Monday, March 14, 2011
More Moon and Jupiter Disappearing in the sunlight Monday, March 7, 2011
More Moon and Jupiter Painting stripes on a giant planet Monday, February 7, 2011


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