International Space Station Practice Questions
20 free International Space Station practice questions for the Static GK. Tap an option to answer — you get instant feedback, the correct answer, and a detailed explanation for every question.
In which year was the first module of the International Space Station (ISS), Zarya, launched into orbit?
- A 1995
- B 1998
- C 2000
- D 2002
Correct answer: 1998
The Zarya Functional Cargo Block was the first component of the ISS, launched by a Russian Proton rocket on November 20, 1998. This event marked the official start of the station's assembly in space.
Which space agency is NOT a primary partner in the International Space Station program?
- A NASA (USA)
- B Roscosmos (Russia)
- C ISRO (India)
- D ESA (Europe)
Correct answer: ISRO (India)
The ISS is a joint project between five participating space agencies: NASA, Roscosmos, JAXA (Japan), ESA, and CSA (Canada). While ISRO collaborates on various international space projects, it is not a member of the ISS partnership.
What is the average altitude at which the International Space Station orbits the Earth?
- A 200 km
- B 400 km
- C 800 km
- D 36,000 km
Correct answer: 400 km
The ISS maintains a Low Earth Orbit (LEO) at an altitude of approximately 400 to 420 kilometers. Because of atmospheric drag, the station requires periodic 're-boosts' to maintain its altitude.
The ISS travels at approximately what speed to maintain its orbit around Earth?
- A 2,800 km/h
- B 12,000 km/h
- C 28,000 km/h
- D 100,000 km/h
Correct answer: 28,000 km/h
To remain in orbit, the ISS travels at a speed of about 28,000 kilometers per hour (17,500 mph). At this velocity, the station completes one full orbit of the Earth approximately every 90 minutes.
Which module served as the first living quarters for the initial crew of the ISS?
- A Zvezda
- B Unity
- C Destiny
- D Columbus
Correct answer: Zvezda
The Zvezda Service Module, launched in 2000, provided the station's early living quarters, life support systems, and electrical power distribution. It remains the structural and functional center of the Russian Orbital Segment.
Continuous human occupation of the ISS began with 'Expedition 1' in which year?
- A 1998
- B 1999
- C 2000
- D 2001
Correct answer: 2000
The first crew, consisting of Bill Shepherd, Yuri Gidzenko, and Sergei Krikalev, arrived at the station on November 2, 2000. Since then, the ISS has been inhabited by humans without interruption for over two decades.
What is the name of the seven-window observatory module on the ISS that provides a panoramic view of Earth?
- A Cupola
- B Tranquility
- C Kibo
- D Quest
Correct answer: Cupola
The Cupola is an ESA-built observatory module that provides crew members with a direct view for celestial observations and monitoring spacewalks. Its central circular window is the largest ever used in space.
The robotic arm used for assembly and maintenance of the ISS, provided by Canada, is known as:
- A Canadarm2
- B Dextre
- C Cyberarm
- D European Robotic Arm
Correct answer: Canadarm2
Canadarm2 is the Space Station Remote Manipulator System (SSRMS) that played a crucial role in the station's construction. It is capable of moving massive loads and 'walking' around the exterior of the station.
Which laboratory module belongs to the Japan Aerospace Exploration Agency (JAXA)?
- A Columbus
- B Pirs
- C Kibo
- D Nauka
Correct answer: Kibo
Kibo, which means 'Hope' in Japanese, is the station's largest single module and JAXA's first contribution to an initial human space program. It includes a pressurized module, an exposed facility for experiments, and its own robotic arm.
How many sunsets and sunrises do crew members on the ISS typically witness in a 24-hour period?
- A 1
- B 8
- C 24
- D 16
Correct answer: 16
Because the ISS orbits the Earth once every 90 minutes, it completes approximately 16 orbits in a single day. This results in the crew experiencing 16 sunrises and 16 sunsets every 24 hours.
Which US space shuttle carried the 'Unity' node, the first American-built component, to the ISS?
- A Discovery
- B Atlantis
- C Columbia
- D Endeavour
Correct answer: Endeavour
The Endeavour shuttle mission STS-88 delivered the Unity node in December 1998. Unity was mated with the Russian Zarya module, forming the foundation of the station.
What is the primary source of power for the International Space Station?
- A Nuclear reactors
- B Hydrogen fuel cells
- C Radioisotope thermoelectric generators
- D Solar power arrays
Correct answer: Solar power arrays
The ISS is powered by massive solar arrays that convert sunlight into electricity. These wingspan-like structures track the sun to maximize power generation for the station's systems and experiments.
The European Space Agency's (ESA) primary contribution to the ISS laboratory system is called:
- A Columbus
- B Harmony
- C Leonardo
- D Rassvet
Correct answer: Columbus
Columbus is the ESA's largest single contribution to the ISS and serves as its primary research laboratory for European scientists. It was launched and attached to the station in 2008.
Which airlock module is used by astronauts for most US-based Extravehicular Activities (EVAs) or spacewalks?
- A Quest
- B Pirs
- C Poisk
- D Node 3
Correct answer: Quest
The Quest Joint Airlock is the primary path for spacewalks from the US Orbital Segment. it was designed to support both American and Russian spacesuit designs.
Approximately how large is the overall structure of the ISS, including its solar arrays?
- A Size of a football field
- B Size of a tennis court
- C Size of a city block
- D Size of a large aircraft carrier
Correct answer: Size of a football field
The ISS spans an area roughly equivalent to a standard American football field, measuring about 109 meters in length. It is the largest single structure ever built by humans in space.
Which private company was the first to dock a commercial cargo spacecraft (Dragon) with the ISS?
- A Boeing
- B Blue Origin
- C Northrop Grumman
- D SpaceX
Correct answer: SpaceX
In 2012, SpaceX's Dragon became the first commercial spacecraft to deliver cargo to the ISS. This ushered in a new era of commercial partnership in Low Earth Orbit operations.
What happens to most of the liquid waste (urine) produced by the crew on the ISS?
- A It is released into space
- B It is stored and returned to Earth
- C It is used as rocket fuel
- D It is recycled into drinking water
Correct answer: It is recycled into drinking water
The ISS uses a sophisticated Water Recovery System that recycles about 93% of all water on board. This includes sweat, breath moisture, and urine, which are purified and turned back into potable drinking water.
The Russian segment module that provides additional laboratory space and was launched in 2021 is named:
- A Zarya
- B Zvezda
- C Prichal
- D Nauka
Correct answer: Nauka
Nauka (the Russian word for 'Science') is a multipurpose laboratory module that replaced the Pirs docking compartment. It provides scientific facilities, oxygen generation, and a robotic arm for the Russian segment.
What is the standard time zone used by the crew on the International Space Station?
- A Coordinated Universal Time (UTC)
- B United States Eastern Time (EST)
- C Moscow Time (MSK)
- D Pacific Standard Time (PST)
Correct answer: Coordinated Universal Time (UTC)
To provide a compromise between the control centers in Houston and Moscow, the ISS operates on Coordinated Universal Time (UTC). This helps maintain a consistent schedule for the international crew and ground teams.
NASA has currently planned to continue ISS operations until which year?
- A 2025
- B 2028
- C 2030
- D 2040
Correct answer: 2030
The Biden-Harris administration and NASA have committed to extending ISS operations through 2030. After this period, the station is expected to be de-orbited as NASA transitions to commercially operated space stations.