Jupiter

Skywatchers can see five planets this week.

How to Watch Five Planets Align in the Night Sky This Week

Mercury, Venus, Mars, Jupiter and Uranus will appear as if in a parade in the Western sky on Tuesday

During World War II, Executive Order 9066 authorized the incarceration of 120,000 Japanese Americans (above: In Los Angeles in April 1942, dozens of families wait for a train to Manzanar War Relocation Center in Owens Valley, California).

Japanese American Artists Recall the Trauma of Wartime Incarceration

Smithsonian podcasts explore the legacy of Executive Order 9066 and the camera that almost didn’t make it to the Juno spacecraft launch

An enhanced-contrast image of Jupiter and its moon Ganymede taken by NASA's Cassini spacecraft in 2000.

Jupiter Reclaims Title of Planet With the Most Moons

After the discovery of 12 new moons, the gas giant now has 92 known natural satellites—and scientists expect to find more

HAARP's antennas

Alaska

Why Scientists Are Sending Radio Signals to the Moon and Jupiter

Researchers conducted wide-ranging experiments at Alaska's HAARP facility, known for atmospheric research and conspiracy theories

James Webb Space Telescope composite image of Jupiter 

See the James Webb Space Telescope’s Stunning New Images of Jupiter

Its Near-Infrared Camera captured auroras, moons and the Great Red Spot

Europa became an interest to researchers as a place that potentially could harbor life after observations from Earth-bound telescopes and space probes found evidence of an ocean 10 to 15 miles beneath the icy surface. This drawing illustrates a possible water pocket within the ice that may contribute to ridges forming on the moon's surface.

Europa's Icy Shell May Be Habitable for Life

The moon of Jupiter could have shallow water pockets within its frozen surface

The moons appear as two blurry dots located close together in the upper right area of the image. Io, seen as a darker speck on the left of the two dots, is the most volcanically active world in the solar system. Europa is seen on the right and features a global ocean beneath its icy surface. 

Citizen Scientist Captures Glimpse of Jupiter's Moons, Io and Europa, Using Juno Space Probe Data

The natural satellites are seen in the distant background of the gas giant's portrait

NASA’s Hubble Space Telescope snapped this picture of the Centaur LD2 as it orbited near Jupiter.

The Ambitious Idea to Study the Evolution of a Comet

Researchers want to send a spacecraft near Jupiter to join up with a chunk of rock and ice as it’s flung toward the sun

Lucy measures more than 46 feet wide, and about 24 feet tall and is equipped with solar arrays on its main body that allow it to power up its instruments. Each camera will enable Lucy to study the surface of the asteroids, detect traces of water or minerals, and count craters or rings.  

NASA's Lucy Probe Asteroid Mission Will Study Fossil-Like Origins of Our Solar System

The spacecraft launches on October 16 and is expected to reach its target by 2027

The false-color mosaic shows how features on the Moon differ from each other because of its meteoric impacts and volcanic past.

The Revolution in Moon Exploration

What NASA's Technicolor Mosaic Images of the Moon Can Teach Us About the Lunar Surface

The vivid hues showcase soil composition and ancient volcanic history

Jupiter and its largest moon Ganymede are shown in this image. Ganymede is slightly larger than the planet Mercury. Meanwhile, Jupiter's new 80th moon is much smaller, likely only a few dozen miles in diameter.

Amateur Astronomer Discovers New Moon Orbiting Jupiter

Kai Ly spotted the unnamed satellite using telescope images from 2003

Streaked across Ganymede's surface are bright light-colored regions of ridges and grooves that overlap darker-colored terrains along the icy shell. The textured scar-like areas suggest that the moon's surface underwent extreme geologic changes over time.

NASA's Juno Space Probe Zooms by Largest Moon in the Solar System

The flyby will be the closest any spacecraft has flown near Ganymede in over two decades

In the images, the Great Red Spot, Jupiter's superstorm, is seen in both visible and ultraviolet light, but it disappears into the background as a black splotch in the infrared image.

Peer Into Jupiter's Gassy Atmosphere With These Stunning New Photos

The images taken at various wavelengths reveal details about the gas giant's stormy atmosphere

So far, scientists have only documented jagged lightning bolts. Some physicists believe that the discovery of a completely straight lightning bolt could prove the existence of dark matter.

Could Weirdly Straight Bolts of Lightning Be a Sign of Dark Matter?

A group of scientists say the phenomenon could indicate dark matter speeding through our world at more than 300 miles a second

NASA’s Juno spacecraft captured this image of swirling clouds in Jupiter's northern latitudes on November 3, 2019

New Research

Raindrops Are Surprisingly Similar on Other Planets

Whether they are made of water, methane or liquid iron, raindrops' size and shape are limited by the same equations

Laboratory tests reveal that ice blocks containing different salts glow differently after being exposed to radiation.

New Research

Radiation Might Make Jupiter's Salty, Icy Moon Europa Glow

Europa is one of Jupiter's four largest moons and a prime candidate for finding life beyond Earth

An illustration of high-altitude "shallow lightning" storms on Jupiter

The Forecast on Jupiter Is Cloudy With a Chance of 'Mushballs'

New research describes the gas giant's wild weather

Watch Colorful Sunsets on Distant Planets in This NASA Simulation

New models from a NASA scientist show what the sun’s setting might look like on Venus, Uranus and Mars

A new computer model gives insight into how Europa's ocean formed, and how life could use its chemical energy to survive.

New Research

Heat in Jupiter’s Moon Europa Might Have Made Its Oceans Habitable

An upcoming NASA mission will get a closer look at the ocean moon

Jupiter seen in high resolution thermal infrared via the Gemini Observatory's Lucky Imaging technique.

Check Out These New Images of Jupiter’s Stormy Surface

The images allowed scientists to map lightning strikes and revealed holes in the Great Red Spot

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