Mission Summary

While its aim was to study Jupiter and its mysterious moons, which it did with much success, NASA's Galileo mission also became notable for discoveries during its journey to the gas giant. It was the first spacecraft to visit an asteroid -- two in fact, Gaspra and Ida. Galileo provided the only direct observations of a comet colliding with a planet. And its flight past Venus in 1990 yielded fascinating infrared images of the planet's clouds.

After discoveries including evidence for the existence of a saltwater ocean beneath the Jovian moon Europa's icy surface, extensive volcanic processes on the moon Io and a magnetic field generated by the moon Ganymede, Galileo plunged into Jupiter's atmosphere on September 21, 2003 to prevent an unwanted impact with Europa.

Scientific Instrument(s)

- Spacecraft:
- Solid-state imaging camera
- Near-infrared mapping spectrometer
- Ultraviolet spectrometer
- Photopolarimeter radiometer
- Magnetometer
- Energetic particles detector
- Plasma wave spectrometer
- Dust detector
- Heavy ion counter

Atmospheric probe:
- Helium abundance detector
- Atmospheric structure instrument
- Neutral mass spectrometer
- Nephelometer
- Net flux radiometer
- Lightning and radio emission detector

Type: Orbiter
Status: Past
Launch Date: October 18, 1989
12:53 p.m. EDT (16:53 UTC)
Launch Location: Kennedy Space Center, Florida
Mission End Date: September 21, 2003
Target: Jupiter, Venus, asteroid Gaspra, asteroid Ida
Destination: Jupiter, Jupiter's moons (Ganymede, Callisto, Europa, Io, Amalthea), asteroid Gaspra, asteroid Ida, Venus
Carbon in Smoke Plumes OCO-2 Data to Lead Scientists Forward into the Past

› Read more

Rosetta Mission's Destination: Comet 67P/Churnyumov-Gerasimenko Rosetta Spacecraft Approaching Twofold Comet

› Read more

Voyager scientist honored Voyager Project Scientist Ed Stone Honored

› Read more