From: NASANews@hq.nasa.gov (by way of Jan Wee <jwee@mail.arc.nasa.gov>)
Subject: 1996 Seen as Year of Spectacular Discoveries and New
Date: Tue, 17 Dec 1996 13:17:09 -0600
Dear discuss-lfm members,
A NASANews of interest to this forum!
Jan Wee
********************************************************************
David E. Steitz
Headquarters, Washington, DC December 17, 1996
(Phone: 202/358-1600)
Sender: owner-press-release
Precedence: bulk
RELEASE: 96-260
1996 SEEN AS YEAR OF SPECTACULAR
DISCOVERIES AND NEW CHALLENGES FOR NASA
A rock, a record, a rover and a new rocket were among the
top NASA stories for 1996. Background material, video and
still images are available to news media to illustrate these
stories, with supporting material also available via the
Internet and the World Wide Web.
LIFE ON MARS? TANTALIZING CLUES FROM AN ANCIENT ROCK
In an announcement that caused all humankind to take
pause, NASA Administrator Daniel S. Goldin and a team of
scientists revealed in August that a meteorite from Mars
strongly suggested that primitive life may have existed on
that planet more than 3 billion years ago. In a press
conference at NASA Headquarters, a research team showed the
world pictures of the first organic molecules thought to be
of Martian origin; several features characteristic of
biological activity, and possible microscopic fossils of
primitive, bacteria-like organisms inside the ancient
meteorite. In vowing to pursue the investigation of this
historic discovery, Goldin said "The evidence is exciting,
even compelling, but not conclusive. It is a discovery that
demands further scientific investigation. NASA is ready to
assist the process of rigorous scientific investigation and
lively scientific debate that will follow this discovery."
Goldin invited governments from around the globe to
participate in the continuing investigation of the meteorite.
LUCID SETS U.S. RECORD FOR STAY IN SPACE
Astronaut Dr. Shannon Lucid set a new record for an
American living in space and broke the world's record for a
woman living in space by spending 181 days aboard the Russian
Mir Space Station. Lucid, who conducted microgravity and
life sciences experiments aboard the Mir with two Russian
cosmonauts, returned to Earth aboard Space Shuttle Atlantis
in November. President Clinton presented Lucid with the
Congressional Space Medal of Honor in an early December
ceremony, citing Lucid "for her contributions to
international cooperation in space ... Shannon Lucid is an
explorer in the best tradition of those who dare to challenge
the unknown." Lucid's stay on Mir was part of continuing
U.S. - Russian space cooperation, which is setting the
foundation for the International Space Station.
TWO PROBES LAUNCHED TO STUDY THE RED PLANET
In a continuing effort to learn more about Mars, the
United States launched two new spacecraft to the Red Planet
in 1996. The Mars Global Surveyor and the Mars Pathfinder
missions were both successfully launched from NASA's Kennedy
Space Center, FL. Mars Global Surveyor, due to rendezvous
with Mars in September of 1997, will spend four months
dipping into Mars' atmosphere using a technique called
"aerobraking." Starting in 1998, the Surveyor will begin
compiling a systematic database as it surveys the Martian
landscape and photographs unique features, such as polar caps
and Mars' network of sinuous, intertwining river channels.
Mars Pathfinder, set to land on Mars July 4, 1997, is
designed to test the feasibility of a new low-cost method of
delivering a spacecraft, science payload and free-ranging
rover to the surface of the Red Planet. Once deployed, the
lander will transmit back to Earth science data collected
during descent through Mars' atmosphere. The rover, named
Sojourner, will then activate an onboard camera and send back
images to Earth, signifying the start of its exploration.
GALILEO UNRAVELS MYSTERIES OF JUPITER AND ITS MOONS
Mars was not the only planet to reveal startling new
secrets in 1996. NASA's Galileo spacecraft, in its flyby and
probe deploy at Jupiter, revealed many previously unknown
facts about our Solar System's largest planet. Galileo's
Probe, which was successfully sent into Jupiter's violent
atmosphere in December 1995, provided new discoveries for
NASA scientists. New information on the extent of water,
clouds, and the chemical composition of Jupiter's atmosphere
was revealed. As Galileo sped by Jupiter's moons, new
details of the satellites began to emerge. On Ganymede,
Jupiter's largest moon, scientists were intrigued by three-
dimensional pictures of giant, icy fissures and evidence of a
magnetic field. Galileo also reported that "warm ice" or
even liquid water may have existed, and perhaps still exists,
beneath the cracked icy crust of the moon Europa. Galileo
found that the volcanically-active moon Io had noticeably
changed since it was last observed 17 years ago by the
Voyager spacecraft. In November, Galileo flew by Jupiter's
moon Callisto, investigating the strange, pockmarked fourth
moon, so different from its other active siblings.
HUBBLE SPACE TELESCOPE CONTINUES TO AMAZE ASTRONOMERS
Living up to its role as one of the "Great
Observatories," the Hubble Space Telescope showed images of
galaxies colliding, the surface of Pluto, and the birth of
stars during 1996. In April, Hubble sent back dramatic images
of gigantic tadpole-shaped objects surrounding a dying star.
The "cometary knots" are probably the result of a dying
star's final outbursts, seen in the Helix nebula. The Space
Telescope continues on track for measuring the expansion of
the universe, sending back information that fine-tunes the
Hubble Constant. Scientists are using the telescope to try
and place the Hubble Constant to within a ten percent
accuracy. Compiling a "cosmic movie" of the Crab Nebula,
Hubble found the Nebula even more dynamic than previously
understood. Hubble measured the diameters of a special class
of pulsating star called Mira variables, which rhythmically
change size. At 11 billion light-years away, they existed
during the epoch when it is commonly believed galaxies
started to form. Hubble concluded the gigantic, old stars
are not round but rather egg-shaped. That discovery may
preview the fate of our Sun five billion years from now.
Hubble also surveyed the "homes" of quasars, showing that
they live in a remarkable variety of galaxies, many of which
are violently colliding. The complicated image Hubble sent
back suggests there may be a variety of mechanisms for
"turning on" quasars, the universe's most energetic objects.
Hubble introduced us to images of what may be galaxies under
construction in the early universe, being made out of a long
sought ancient population of "galactic building blocks."
Those images show a grouping of 18 gigantic star clusters
that appear to be the same distance from Earth, and close
enough to each other that they will eventually merge into a
few galaxy-sized objects. In October, Hubble followed the
spectacular dance of Jupiter's aurora, allowing astronomers
to map Jupiter's immense magnetic field and better understand
how it generates such phenomena.
NEXT GENERATION LAUNCH VEHICLE CHOSEN FOR DEVELOPMENT
In a quest for a faster, better, cheaper access to space
in the 21st Century, Vice President Al Gore and Administrator
Goldin announced that Lockheed Martin was selected to build
the X-33 technology demonstration vehicle, a one-half scale
prototype of the Reusable Launch Vehicle which will be used
to demonstrate advanced technologies that will dramatically
increase reliability and lower the costs of putting payloads
into space. Lockheed Martin will design, build and conduct
the first test flight of the X-33 test vehicle by March 1999,
and conduct up to fifteen flights by December 1999. NASA has
budgeted $941 million for the project through 1999, with
Lockheed Martin contributing over $200 million. Called
"VentureStar," the unpiloted vehicle will launch vertically
like a rocket and land horizontally like an airplane.
-end-
NOTE TO EDITORS: More detailed information about this year's
top NASA stories is available:
STORY INTERNET WORLD WIDE WEB URL
Life on Mars: http://www.jsc.nasa.gov/pao/flash/
Shannon Lucid: http://shuttle
mir.nasa.gov/science/brochure/toc.html
New Mars Probes: http://mpfwww.jpl.nasa.gov and
http://www.jpl.nasa.gov/mgs
Galileo: http://ccf.arc.nasa.gov/galileo_probe/
Hubble: http://www.stsci.edu/pubinfo/Latest.html
X-33: http://rlv.msfc.nasa.gov/x33/index.html
PHOTOGRAPHS/IMAGES
Life on Mars: 96-H-514, Electron scanning microscope
image of Mars meteorite
Shannon Lucid: 96-HC-666, Imax image of Lucid, 96-HC-711,
Lucid with Russian Space Suit;
96-HC-659, Imax image of Lucid reading a
book in space
New Mars Probes: 96-HC-725, Mars Global Surveyor; 96-HC-686,
Mars Pathfinder
Galileo: 96-HC-682, Io; 96-HC-728, Europa; 96-H-432,
Ganymede
Hubble: 96-HC-25, Egg Nebula; 96-HC-216, Cometary
Knots; 96-HC-729, Quasars
X-33: 96-HC-735, X-33
For the latest news and information about NASA, please visit
TODAY@NASA at URL:
http://www.hq.nasa.gov/office/pao/NewsRoom/today.html