Astronomy Picture of the Day
Discover the cosmos!
Each day a different image or photograph of our fascinating universe is
featured, along with a brief explanation written by a professional
August 5, 1995
Geysers on Triton
Credit: NASA, Voyager Project
In August of 1989 NASA's
spacecraft passed by Neptune, the most distant of the solar system's gas
giant planets. Its encounter with Neptune climaxed with its closest approach
to Neptune's largest moon Triton. From a distance of about 24,000 miles
the robot space probe surveyed Triton's surface, whose temperature
averages nearly -400 degrees Fahrenheit, and discovered surprising evidence
of a complex and active world.
For example, the prominent dark streaks in this image seem to come from
small volcanoes and may
consist of nitrogen frost mixed with organic compounds ejected during
For more information about Triton, see
the `Views of the Solar System'
Triton page .
Tomorrow's picture: Liftoff of Space Shuttle Columbia.
| About APOD
Authors & editors:
NASA Technical Rep.:
Specific rights apply.
A service of:
Michigan Tech. U.