※ [本文轉錄自 s-astro 看板]
發信人: baalke@kelvin.jpl.nasa.gov (Ron Baalke), 看板: s-astro
標 題: Galileo Update - 12/18/96
發信站: Jet Propulsion Laboratory (Thu Dec 19 05:34:00 1996)
轉信站: starson!news.cs.nthu!thccx4!news.cc.nctu!news!spring!howland.erols.net
PUBLIC INFORMATION OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIF. 91109. TELEPHONE (818) 354-5011
http://www.jpl.nasa.gov
GALILEO MISSION STATUS
December 18, 1996
NASA's Galileo spacecraft has started making high-resolution
scientific measurements of the Jupiter system as it begins its
swooping, low pass of Jupiter and the Jovian moon Europa. Galileo is
primed for close flyby of Europa at 10:53 p.m. Pacific time tonight,
which falls on Thursday, Dec. 19 at 1:53 a.m. Eastern time. The
spacecraft will fly about 700 kilometers (about 435 miles) above
Europa's surface. The encounter will be more than 200 times closer
than the Voyager spacecraft came to Europa in 1979.
Europa is especially intriguing because scientists believe it may
have an ocean beneath its icy crust. Scientists hope Galileo's
close-ups of Europa will provide new details about what might exist
beneath the surface ice.
Galileo will conduct scientific observations of Europa and the
other satellites, as well as Jupiter and its magnetosphere through
Dec. 22. The encounter data stored on Galileo's tape recorder will
begin to be played back on Dec. 22 and concluded in mid-February 1997,
just before Galileo's next Europa encounter. The observations will
include images, nighttime and daytime temperature measurements,
searches for auroral activity, the magnetic field, atmospheric studies
and investigations of the charged-particle environment in Europa's
vicinity.
The next Europa flyby will be even closer at an altitude of a mere
587 kilometers (364 miles) on February 19, 1997 (Pacific time). The
spacecraft's third flyby of Europa will occur on Nov. 6, 1997, at an
altitude of 1,125 kilometers (699 miles).
#####
--
西賽山前白鷺飛。桃花流水鱖魚肥。青箬笠﹐綠簑衣。斜風細雨不須歸。～漁歌子
--
※ Origin: 星空之子(astrobbs.club.nthu.edu.tw) ◆ From: 163.13.224.20