An artist's depiction of what the scene must have looked like when the NASA’s Galileo spacecraft approached Amalthea, moon of Jupiter.
Click on image for full size
Courtesy of NASA
A Jupiter moon that has more holes than Swiss cheese!
News story originally written on December 11, 2002
Amalthea is a small reddish moon of Jupiter. It is not made of Swiss cheese, but it does seem to be full of holes. This makes it very light! This new information came from the Galileo spacecraft last week.
Scientists think that the rock that makes up Amalthea is broken into many large boulders. Long ago, the moon may have been one piece, but then it was broken into pieces by collisions. The pieces are just barely touching each other leaving many empty gaps in the moon.
Shop Windows to the Universe Science Store!
Our online store
on science education, classroom activities in The Earth Scientist
specimens, and educational games
You might also be interested in:
Galileo was a spacecraft that orbited Jupiter for eight years. It made many discoveries about Jupiter and its moons. Galileo was launched in 1989, and reached Jupiter in 1995. The spacecraft had two parts....more
It was another exciting and frustrating year for the space science program. It seemed that every step forward led to one backwards. Either way, NASA led the way to a great century of discovery. Unfortunately,...more
The Space Shuttle Discovery lifted off from Kennedy Space Center on October 29th at 2:19 p.m. EST. The sky was clear and the weather was great. This was the America's 123rd manned space mission. A huge...more
Scientists found a satellite orbiting the asteroid, Eugenia. This is the second one ever! A special telescope allows scientists to look through Earth's atmosphere. The first satellite found was Dactyl....more
The United States wants Russia to put the service module in orbit! The module is part of the International Space Station. It was supposed to be in space over 2 years ago. Russia just sent supplies to the...more
A coronal mass ejection (CME) happened on the Sun last month. The material that was thrown out from this explosion passed the ACE spacecraft. ACE measured some exciting things as the CME material passed...more
Trees and plants are a very important part of this Earth. Trees and plants are nature's air conditioning because they help keep our Earth cool. On a summer day, walking bare-foot on the sidewalk burns,...more