space
exploration timeline
1971 - 1975
-
Apollo 14
- USA Lunar Manned Lander - 44,456 kg - (January
31 to February 8, 1971)
Crew:
Alan B. Shepard, Jr., Edgar D. Mitchell, Stuart
A. Roosa.
Shepard and Mitchell landed on the moon on
February 5, 1971, in the Fra Mauro
highlands, located at 3°40' S and longitude
17°28' E. They collected 42.9 kilograms of lunar
samples and used a hand-held cart to transport
rocks and equipment.
-
Mariner 8
- USA Mars Flyby - (May 8, 1971)
-
Kosmos 419
- USSR Mars Probe - (May 10, 1971)
-
Mars 2
- USSR Mars Orbiter/Soft Lander - 4,650 kg - (May
19, 1971)
The Mars 2
lander was released from the orbiter on November
27, 1971. It crashed-landed because its breaking
rockets failed - no data was returned and the
first human artefact was created on Mars. The
orbiter returned data until 1972.
-
Mars 3
- USSR Mars Orbiter/Soft Lander - 4,643 kg - (May
28, 1971)
Mars 3 arrived
at Mars on December 2, 1971. The lander was
released and became the first successful landing
on Mars. It failed after relaying 20 seconds of
video data to the orbiter. The Mars 3 orbiter
returned data until August, 1972. It made
measurements of surface temperature and
atmospheric composition.
-
Mariner 9
- USA Mars Orbiter - 974 kg - (May 30, 1971 -
1972)
Mariner 9
arrived at Mars on November 3, 1971 and was
placed into orbit on November 24. This was the
first US spacecraft to enter an orbit around a
planet other than the Moon. At the time of its
arrival a huge dust storm was in progress on the
planet. Many of the scientific experiments were
delayed until the storm had subsided. The first
hi-resolution images of the moons Phobos and
Deimos were taken. River and channel like
features were discovered. Mariner 9 is still in
Martian orbit.
-
Apollo 15
- USA Lunar Manned Lander - 46,723 kg - (July 26
to August 7, 1971)
Crew:
David R. Scott, James B. Irwin, Alfred M.
Worden.
Scott and Irwin landed on the moon on July 30,
1971. The landing site was Hadley-Apennine
at latitude 26°6' N and longitude 3°39' E. They
collected samples amounting to 76.8 kilograms. A
lunar Roving Vehicle was carried on this mission
(and all subsequent ones) which allowed the
astronauts to travel several kilometres from the
landing site. The commander service module was
the first to carry orbital sensors and to
release a subsatellite into lunar orbit. Worden
performed the first deep spacewalk to retrieve
film from the service module.
-
Luna 18
- USSR Lunar Lander - 5,600 kg - (September 2,
1971 - 1972)
-
Luna 19
- USSR Lunar Orbiter - 5,600 kg - (September 28,
1971 - 1972)
-
Luna 20
- USSR Lunar Lander - 5,600 kg - (February 14,
1972)
Landed on the
moon and returned samples to the Earth. Landed
on February 21, 1972 at Apollonius highlands
located at latitude 3°32' N and longitude 56°33'
E. 30 grams of lunar samples were returned to
the Earth.
-
Pioneer 10
- USA Jupiter Flyby - 259 kg - (March 3, 1972)
Pioneer 10
flew by Jupiter on December 1, 1973. It passed
132,250 kilometres from Jupiter's cloud tops. It
returned over 500 images of Jupiter and its
moons. Pioneer 10's greatest achievement was the
data collected on Jupiter's magnetic field,
trapped charged particles, and solar wind
interactions. The orbit boundary of Pluto was
crossed on June 13, 1983. It has now left the
solar system.
-
Venera 8
- USSR Venus Lander - 1,180 kg - (March 27, 1972)
Venera 8
arrived at Venus on July 22, 1972. It measure
wind speed variations as it descended through
the atmosphere: 100 meters/second above 48
kilometres, 40-47 meters/second at 42-48
kilometres, and 1 meter/second below 10
kilometres. It returned data for 50 minutes
after it landed.
-
Apollo 16
- USA Manned Lunar Lander - 46,733 kg - (April
16-27, 1972)
Crew:
John W. Young, Charles M. Duke, Jr., Thomas K.
Mattingly II.
Young and Duke landed on April 21, 1972, at the
Descartes crater located at latitude
9°00' N and longitude 15°31' E. They deployed
instruments, drove the lunar rover, and
collected 94.7 kilograms of samples during a
71-hour surface stay.
-
Apollo 17
- USA Manned Lunar Lander - 46,743 kg - (December
7-19, 1972)
Crew:
Eugene A. Cernan, Harrison H. Schmitt, and
Ronald B. Evans.
Cernan and Schmitt landed on the moon on
December 12, 1972. The landing site was
Taurus-Littrow at latitude 20°10' N and
longitude 30°46' E. They returned 110.5 kg of
rock and soil samples. The astronauts covered
30.5 kilometres in the lunar rover during a
75-hour stay.
-
Luna 21
- USSR Lunar Lander and Rover - 4,850 kg -
(January 8, 1973)
-
Pioneer 11
- USA Jupiter/Saturn Flyby - 259 kg - (April 6,
1973 - November 1995)
Pioneer 11
flew by Jupiter on December 1, 1974 passing
42,900 kilometres from Jupiter's cloud tops. It
took better pictures than Pioneer 10, and
measured Jupiter's intense charged-particle and
magnet field environment. As it flew by Jupiter
it was given a gravity assist which swung it
onto a course for Saturn. On September 1, 1979,
Pioneer 11 flew past the outer edge of Saturn's
A ring at a range of 3,500 kilometres. It
travelled underneath the ring system and passed
20,930 kilometres from Saturn's cloud tops. It
has now left the solar system.
-
Skylab
- USA Space Station - (May 26, 1973)
Skylab, which
was America's first space station, was manned
for 171 days by three crews during 1973 and
1974. The space station included the Apollo
Telescope Mount (ATM), which astronauts used to
take more than 150,000 images of the Sun. Skylab
was abandoned in February 1974 and re-entered
the Earth's atmosphere in 1979.
-
Explorer 49
- USA Solar Probe - 328 kg - (June 10, 1973)
-
Mars 4
- USSR Mars Orbiter - 4,650 kg - (July 21, 1973)
Mars 4 arrived
at Mars on February, 1974, but failed to go into
orbit due to a malfunction of its breaking
engine. It flew past the planet with in 2,200
kilometers of the surface. It returned some
images and data.
-
Mars 5
- USSR Mars Orbiter - 4,650 kg - (July 25, 1973)
Mars 5 entered
into orbit around Mars on February 12, 1974. It
acquired imaging data for the Mars 6 and 7
missions.
-
Mars 6
- USSR Mars Orbiter/Soft Lander - 4,650 kg -
(August 5, 1973)
On March 12,
1974, Mars 6 entered into orbit and launched its
lander. The lander returned atmospheric descent
data, but failed on its way down.
-
Mars 7
- USSR Mars Orbiter/Soft Lander - 4,650 kg -
(August 9, 1973)
On March 6,
1974, Mars 7 failed to go into orbit about Mars
and the lander missed the planet. Carrier and
lander are now in a solar orbit.
-
Mariner 10
- USA Mercury/Venus Flyby - 526 kg - (November 3,
1973 - March 24, 1975)
Mariner 10 was
the first dual planet mission. It flew past
Venus on February 5, 1974 for a gravity assist
to the planet Mercury. Mariner 10 was the first
spacecraft to have an imaging system. It
recorded circulation in the Venusian atmosphere
and showed the temperature of the cloud tops to
be -23°C. Mariner 10 flew past Mercury 3 times
on March 29, 1974, September 21, 1974, and March
16, 1975. These three encounters produced over
10,000 pictures with 57% planet coverage. It
recorded surface temperatures ranging from 187°C
to -183°C on the day and night sides. A weak
magnetic field was detected but it failed to
detect an atmosphere. Mariner 10 is now in a
solar orbit.
-
Luna 22
- USSR Lunar Orbiter - 5,600 kg - (May 29, 1974 -
1975)
-
Luna 23
- USSR Lunar Probe - 5,6000 kg - (October 28,
1974)
-
Helios 1
- USA & West Germany Solar Probe - 370 kg -
(December 10, 1974 - 1975)
-
Venera 9
- USSR Venus Orbiter and Lander - 4,936 kg (June
8, 1975)
Venera 9
arrived at Venus on October 22, 1975, three days
before its sister spacecraft Venera 10. Both
orbiters photographed the clouds and looked at
the upper atmosphere. Differences in cloud
layers were discovered at 57-70 kilometres,
52-57 kilometres, and 49-52 kilometres from the
surface. The lander arrived on the Venusian
surface on November 22, 1975. During a period of
53 minutes, it transmitted the first black and
white images of the planets surface. It showed
sharp-edged flat rocks and a basaltic terrain.
The probe in now in a Venus orbit.
-
Venera 10
- USSR Venus Orbiter and Lander - 5,033 kg - (June
14, 1975)
Venera 10
arrived at Venus on October 25, 1975, three days
after its sister spacecraft Venera 9. Both
orbiters photographed the clouds and looked at
the upper atmosphere. Differences in cloud
layers were discovered at 57-70 kilometres,
52-57 kilometres, and 49-52 kilometres from the
surface. The lander arrived on the Venusian
surface on November 25, 1975. During a period of
65 minutes, it transmitted black and white
images of the planets surface. The terrain was
more eroded than at the Venera 9 landing site.
-
Viking 1
- USA Mars Orbiter/Lander - 3,399 kg - (August 20,
1975 - August 7, 1980)
Viking 1 and 2
were designed after the Mariner spacecraft. They
consisted of an orbiter and lander. The orbiter
weighed 900 kg and the lander 600 kg. Viking 1
went into orbit about Mars on June 19, 1976. The
lander touched down on July 20, 1976 on the
western slopes of Chryse Planitia. Both landers
had experiments to search for Martian
micro-organism. The results of these experiments
are still being debated. The landers provided
detailed color panoramic views of the Martian
terrain. They also monitored the Martian
weather. The orbiters mapped the planet's
surface, acquiring over 52,000 images. Viking 1
orbiter was deactivate on August 7, 1980 when it
ran out of altitude-control propellant. Viking 1
lander was accidentally shut down on November
13, 1982, and communication was never regained.
-
Viking 2
- USA Mars Orbiter/Lander - 3,399 kg - (September
9, 1975 - July 25, 1978)
Viking 1 and 2
were designed after the Mariner spacecraft. They
consisted of an orbiter and lander. The orbiter
weighed 900 kg and the lander 600 kg. Viking 2
went into orbit about Mars on July 24, 1976. The
lander touched down on August 7, 1976 at Utopia
Planitia. Both landers had experiments to search
for Martian micro-organism. The results of these
experiments are still being debated. The landers
provided detailed colour panoramic views of the
Martian terrain. They also monitored the Martian
weather. The orbiters mapped the planet's
surface, acquiring over 52,000 images. Viking 2
orbiter was deactivate on July 25, 1978 when it
ran out of altitude-control propellant. Viking 2
lander used Viking 1 orbiter as a communications
relay, and had to be shut down at the same time
as the orbiter on August 7, 1980.
|
-
Helios 2
- USA & West Germany Solar Probe - (January 16,
1976)
-
Luna 24
- USSR Lunar Lander - 4,800 kg - (August 9, 1976)
The landing
site was Mare Crisium at latitude 12°45'
N and longitude 60°12' E. Samples amounting to
170 grams were returned from the moon.
-
Voyager 2
- USA Jupiter/Saturn/Uranus/Neptune Flyby - 800 kg
- (August 20, 1977)
Voyager 2 flew
by Jupiter on July 9, 1979, Saturn on August 26,
1981, Uranus on January 24, 1986, and Neptune on
August 24, 1989.
-
Voyager 1
- USA Jupiter/Saturn Flyby - 800 kg - (September
5, 1977)
Voyager 1 flew
by Jupiter on March 5, 1979, and Saturn on
November 12, 1980.
-
Pioneer Venus
1 - USA Venus Orbiter -
582 kg - (May 20, 1978 - October 8, 1992)
Pioneer Venus
1 (also known as Pioneer 12) arrived at
Venus on December 4, 1978. It operated
continuously from 1978 until October 8, 1992,
when contact was lost with the spacecraft. It
was expected to burn up in the Venusian
atmosphere 6 days later. The orbiter was the
first spacecraft to use radar in mapping the
planet's surface. The electron field experiment
detected radio bursts presumably caused by
lightening. No magnetic field was detected. From
1978 to 1988 the amount of sulphur dioxide in the
atmosphere decreased by 10%. The reason for this
decrease is unknown. Perhaps a large volcano
erupted just before the orbiter arrived and the
amount of sulfur dioxide slowly declined.
-
Pioneer Venus
2 - USA Venus Atmosphere
Probe - 904 kg - (August 8, 1978)
Pioneer Venus
2 (also know as Pioneer 13) carried four
atmospheric probes. One large and three smaller
ones. They arrived at Venus on December 9, 1978
and plunged into the atmosphere. The four probes
descended through the atmosphere by parachute
while the spacecraft burned up high in the
atmosphere. At a height of 70-90 kilometres the
probes encountered a fine haze layer. Between
10-50 kilometres there was little atmospheric
convection and below 30 kilometres the
atmosphere was clear.
-
International
Sun-Earth Explorer 3 -
USA Interplanetary Monitor - 479 kg - (August 12,
1978)
The
Internation Sun-Earth Explorer was renamed to
International Cometary Explorer (ICE). On
September 11, 1985 it passed through the plasma
tail of comet Giacobini-Zinner.
-
Venera 11
- USSR Venus Flyby/Lander - 4,940 kg - (September
9, 1978)
Venera 11
landed on Venus on December 25, 1978, and
returned data for 95 minutes. The imaging
systems failed.
-
Venera 12
- USSR Venus Flyby/Lander - 4,940 kg - (September
14, 1978)
Venera 12
landed on December 21, 1978 and returned data
for 110 minutes. Electrical discharges, probably
from lightning, were recorded.
-
Solar Maximum
Mission - USA Solar
Probe - (February 14, 1980)
The Solar
Maximum Mission (SMM) was designed to provide
coordinated observations of solar activity, in
particular solar flares, during a period of
maximum solar activity. The spacecraft suffered
an on-orbit failure. A repair mission on STS-41C
in 1984, during which shuttle astronauts
rendezvoused with SMM, was successful. SMM
collected data until Nov. 24, 1989, and
re-entered on Dec. 2, 1989.
|
|