MESSENGER offers close-up of mysterious Mercury
NASA celebrated Wednesday hundreds of stunning photographs from the
Mercury MESSENGER probe as it began a year-long mission to orbit and map
the solar system's mysterious innermost planet.
After more than six and a half years and a 4.9-billion-mile journey,
the spacecraft - which stands for MErcury Surface, Space ENvironment,
GEochemistry, and Ranging - finally entered the planet's orbit on March
17.
On Tuesday, it began unlocking the secrets of a planet where
temperatures reach a mind-boggling 800 degrees Fahrenheit (427 degrees
Celsius) during the day but plummet to minus 150 degrees (minus 100
degrees Celsius) at night.
"Early this morning, at 5:20 am, MESSENGER captured this historic
image of Mercury," NASA said. "This image is the first ever obtained
from a spacecraft in orbit about the solar system's innermost planet."
The upper part of the first image showed an unusual, dark-rayed
crater called Debussy, while the lower part revealed a portion of
Mercury near its south pole that has never before been witnessed by
spacecraft, according to NASA. The spacecraft snapped 363 images over
the next six hours and released more on Wednesday in conjunction with an
expert press conference to discuss the findings.
"The entire MESSENGER team is thrilled that spacecraft and instrument
checkout has been proceeding according to plan," said mission spokesman
Sean Solomon of the Carnegie Institution for Science in Washington.
"The first images from orbit and the first measurements from
MESSENGER's other payload instruments are only the opening trickle of
the flood of new information that we can expect over the coming year.
AFP |