A Cassini spacecraft image shows Jupiter's Great Red Spot and two of its Galilean moons, Europa and Callisto. Europa is bright near the spot, while Callisto is darker near the frame edge, its brightness digitally enhanced for visibility. Both moons may harbor subsurface oceans potentially capable of supporting life.

Astronomy Picture from 02/01/2001

Jupiter, Europa, and Callisto

Source: https://apod.nasa.gov/apod/ap010102.html


#Cassini #Jupiter #Europa #Callisto #GalileanMoons #SpaceExploration #NASA #Astronomy #SolarSystem #OuterPlanets #GreatRedSpot #SpeedOfLight #OleRoemer

A series of six images showing Jupiter with the shadows of three of its moons—Io, Callisto, and Ganymede—transiting across its surface. The shadows appear as dark spots, creating the illusion of parts of Jupiter being missing. These images illustrate how the observation of lunar eclipses led to the first measurement of the speed of light by Ole Roemer in 1675.

Astronomy Picture from 02/02/1998

A Triple Eclipse on Jupiter

Source: https://apod.nasa.gov/apod/ap980202.html


#Jupiter #Moonshadows #PlanetaryAlignment #Io #Callisto #Ganymede #Space #Astronomy #OleRoemer #SpeedOfLight

A sequence of six images shows Jupiter with the shadows of three of its moons (Io, Callisto, and Ganymede) transiting across its surface. These shadows appear as dark spots on Jupiter's atmosphere. The images demonstrate the movement of the moons' shadows as they orbit the planet. This rare alignment helped early astronomers measure the speed of light.

Astronomy Picture from 02/02/1998

A Triple Eclipse on Jupiter

Source: https://apod.nasa.gov/apod/ap980202.html


#JupiterMoons #ShadowTransit #PlanetaryAlignment #SpaceScience #Astronomy #Io #Callisto #Ganymede #SolarSystem #OleRoemer #SpeedOfLight