NASA's first 50 years have seen both
triumph and tragedy as the U.S. space agency sent unmanned probes to other
planets and the fringe of our solar system, landed the first astronauts on the
moon, built the world's first reusable manned spaceship and worked alongside
other countries to construct the International Space Station.
The agency first opened its doors on
Oct. 1, 1958 and is currently working to complete the International Space
Station by 2010, retire its aging three-space shuttle fleet and develop the new
Orion and Ares rockets that represent designed to ferry new human explorers to
the moon by 2020.
"In my personal opinion, I'd like
our mission in 50 years to be focused on exploration of other planets," said
Steve Lindsey, NASA's current chief astronaut. "Hopefully we'll get to Mars
before that 50 years is up."
As NASA looks ahead to the next 50
years, here's a glimpse back - by no means comprehensive - of 10 of the
agency's most
memorable milestones and missions:
#10. First Steps: Explorer 1
There have been many since, but the launch of
Explorer 1 on Jan. 31 in 1958 marked the U.S.'s first foray into off-planet
research. The small satellite lifted off atop a Juno 1 rocket and operated in
orbit for 100 days to study cosmic rays in a region that was later known as the
Van Allen radiation belt. It took 12 years, however, for the spacecraft to
ultimately reenter the Earth's atmosphere and be destroyed.
#9. First American in Space: Freedom
7
Beat by the Soviet Union but not out
of the Space Race, NASA bounced back on May 5, 1961 when Mercury astronaut Alan
Shepard launched
into space atop a Redstone rocket to become the first American spaceflyer.
But unlike the Soviet Union's orbital success of cosmonaut Yuri Gagarin,
Shepard's flight lasted just 15 minutes in a suborbital hop.
#8. Voyagers' Grand Tour
Technically two missions in one,
NASA's 'Grand Tour' of the outer solar system launched the Voyager 1 and 2
probes in 1977 on a 12-year flight to the gas giants Jupiter, Saturn, Uranus,
Neptune and their moons. The spacecraft returned stunning images and data of
the outer planets and carried golden records bearing the images, greetings and
sounds of Earth to the stars in case alien life forms should find them.
#7. Lunar Highs and Lows: Apollo 8,
Apollo 13
NASA's Apollo 8 and Apollo 13
missions to the moon range from success to failure and then success again. On
Dec. 21, 1968 Apollo 8 launched on a stunning first manned trip around the
moon, with its three-man crew beaming home the first visions of Earth's
satellite as seen by living, breathing astronauts. Apollo 8 pilot Jim Lovell
also commanded the unlucky Apollo 13 in April 1970, where an explosion forced
the crew to abandon the third lunar landing mission and use their Aquarius
lander as a lifeboat. The exhaustive effort by NASA engineers, during which
then-flight director Gene Kranz coined the phrase 'Failure is not an option,'
ended in the safe return for Lovell's crew.
#6. Everlasting Mars Rovers: Spirit
and Opportunity
They landed on Mars in January 2004,
but the hardy
rovers Spirit and Opportunity have far outlived their initial 90-day
mission in what are arguably NASA's most successful Martian invasions to date.
Building on the success of the first Mars landings (Viking 1 and 2) and the first
rover (little Sojourner), Spirit and Opportunity have found evidence of surface
water in the planet's ancient past, studied their own landing remains and
explored meteorites, craters and other Martian tourist spots.
#5. Jan. 28, 1986: Challenger Accident
The rise of NASA's reusable winged
space shuttle in 1981 launched a new era in which human space appeared routine.
But the stunning
explosion and loss of the shuttle Challenger and its seven-astronaut crew —
including New Hampshire high school teacher Christa McAuliffe — just after
liftoff on Jan. 28. 1986 proved a wakeup call for a complacent America. Not
since the Apollo 1 fire of 1967, which killed three astronauts in a ground
test, had NASA lost a spacecraft crew, though Challenger marked the agency's
first in-flight space tragedy. The agency resumed shuttle flights in 1988.
#4. Great Observatory: The Hubble
Space Telescope
Launched in April 1990 with a
defective mirror, the Hubble Space Telescope was initially billed as a colossal
failure and expensive embarrassment. But an in-space service call by astronauts
revived the telescope which has since become, 18 years and three more service
flights later, an icon of space research and exploration as it peers back into
the history of the universe. A fifth
and final overhaul by astronauts is slated for October 2008.
#3. The Columbia Tragedy: Feb. 1,
2003
On the Saturday morning of Feb. 1,
2003, NASA's second shuttle
disaster struck. The shuttle Columbia and seven astronauts were lost during
landing due to heat shield damage sustained to the orbiter's left wing edge
during launch. The accident sparked an intense investigation, after which NASA
developed in-flight shuttle repair tools and methods, and was directed to
retire its three remaining orbiters by 2010. The agency resumed shuttle flights
in July 2005.
#2. City in Space: The International
Space Station
A decade in the making and still
incomplete, the $100 billion International
Space Station is an unrivaled feat of engineering in space. The product of
a partnership between NASA, Russia, Canada, Japan and European nations, the
orbiting research station first took flight in 1998, with subsequent pieces
added on during via Russian launches and U.S. shuttle flights. The three-person
station is expected to double in crew size before its completion in 2010.
And perhaps the most enduring legacy
of NASA's 50 years of spaceflight...
#1. Apollo 11: First Moon Men
It's been nearly 40 years, but the
first human landing on another world — the moon — remains among NASA's pinnacle
achievements in its five-decade span.
On July 20, 1969, after the Apollo 1
tragedy and series of successful tests in Earth and lunar orbit, Apollo 11
astronauts Neil Armstrong and Buzz Aldrin guided their Eagle lander to Tranquility
Base on the surface of the moon while crewmate Michael Collins circled above
inside the command module Columbia. The landing marked success for the U.S.
over the then-Soviet Union what has since been billed as the Space Race.
NASA plans to return
astronauts to the moon by 2020 using its Orion crew capsules, Altair
landers and Ares I and Ares V boosters. But unlike the Space Race days, the
renewed effort is expected to be a cooperative international endeavor.
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