The question, “How Fast Does The Iss Travel Around The Earth?” is a common one among space enthusiasts and curious minds alike. TRAVELS.EDU.VN is here to answer that question and many more, delving into the fascinating details of the International Space Station (ISS), including its incredible speed, orbit, and the science it enables. Discover the marvels of the ISS and its crucial role in space exploration, unlocking new opportunities for amazing travel experiences and scientific innovation with us. Learn about the amazing speed, orbital mechanics, and continuous research facilitated by this space-based research station.
1. What is the International Space Station (ISS)?
The International Space Station (ISS) represents the most substantial single structure ever placed in space by humanity. This multi-nation construction project saw its main phases completed between 1998 and 2011, but the station continues to evolve with new missions and experiments. It has been continuously occupied since November 2, 2000, serving as a testament to international collaboration and scientific progress.
The ISS is not owned by a single nation but operates as a “co-operative program” between Europe, the United States, Russia, Canada, and Japan, according to the European Space Agency (ESA). NASA spends around $3 billion each year to operate the ISS, which is approximately one-third of its human spaceflight budget, according to the agency’s Office of the Inspector General.
The International Space Station pictured from the SpaceX Crew Dragon Endeavour during a fly around
The International Space Station is seen from the SpaceX Crew Dragon Endeavour, emphasizing the multinational collaboration and engineering that went into its construction.
2. How Many People Have Visited the ISS?
As of May 2022, 258 individuals from 20 countries have visited the International Space Station. The top participating countries include the United States (158 people) and Russia (54 people). Astronaut time and research opportunities on the space station are allocated to space agencies based on their financial or resource contributions, such as modules or robotics.
The ISS involves contributions from 15 nations. NASA (United States), Roscosmos (Russia), and the European Space Agency are the primary partners, contributing the most funding. Other partners include the Japanese Aerospace Exploration Agency and the Canadian Space Agency. Through private companies like Axiom Space, private astronauts are also beginning to work on the orbiting complex. Astronauts from other nations, such as the United Arab Emirates, also occasionally fly to the ISS.
3. What is the ISS Live View?
This NASA livestream shows high-definition views from the ISS as it orbits Earth. The external camera is mounted on the station’s Harmony module. According to NASA’s video description, “If the Harmony module camera is not available due to operational considerations for a longer period of time, a continuous loop of recorded Earth views will be displayed with the caption ‘Previously Recorded.'”
Current plans call for the space station to be operated through at least 2024, with partners discussing a possible extension. NASA has approved an extension to 2030, although Russia has indicated its intent to withdraw after 2024 to focus on building its own space station around 2028. The operational plans for the station after Russia’s departure and beyond 2030 remain uncertain. Possibilities include deorbiting or repurposing the station for future commercial space stations.
4. Mission Control Centers
Crews aboard the ISS are assisted by mission control centers in Houston and Moscow, as well as a payload control center in Huntsville, Alabama. Additional international mission control centers in Japan, Canada, and Europe also support the space station. Elements of the ISS are controlled by mission control centers in Houston or Moscow.
NASA astronauts Jessica Meir and Christina Koch inside the International Space Station
NASA astronauts Jessica Meir and Christina Koch are seen inside the International Space Station, highlighting the international crew that operates and maintains the station.
5. Expert Insights: ISS Q&A with Raphael Grau
To provide expert insight, we consulted Raphael Grau, deputy manager of NASA’s International Space Station External Integration Office, to answer some frequently asked questions about the ISS.
Raphael Grau is the deputy manager of NASA’s International Space Station External Integration Office, providing expert oversight for the station’s external operations.
5.1. How Big is the ISS?
The International Space Station is 356 feet (109 meters) end-to-end with a mass of 925,335 pounds (419,725 kilograms) without visiting vehicles. The solar panels alone cover one acre. There is 13,696 cubic feet of habitable volume for crew members, not including visiting vehicles. The space station has seven sleeping quarters, with the ability to add more during crew handover periods, two bathrooms, a gym, and the cupola — a 360-degree-view bay window of the Earth.
5.2. How High is the ISS?
The space station orbits Earth at an altitude of approximately 250 miles (402 kilometers), with its orbital path taking it over 90 percent of the Earth’s population. Thanks to the size of its solar panels, it can be seen with the naked eye at dusk or dawn when flying over a local area. You can track the space station’s path near you at spotthestation.nasa.gov.
5.3. Who Owns the ISS?
The International Space Station is exactly that — international. It is a partnership of five space agencies from 15 countries who contributed different parts to make up the ISS, which are still owned by the respective partner, and we all help to continuously operate the station 24 hours a day, seven days a week, 365 days a year. The space station is composed of parts provided by the United States, Russia, Japan, Canada, and the countries comprising the European Space Agency.
6. How to See the International Space Station
A pass of the International Space Station with Canadian astronaut David St. Jacques on board, on the evening of January 26, 2019
The International Space Station passes over Earth, captured on January 26, 2019. Its visibility underscores the station’s accessibility to observers with the right timing and location.
The International Space Station orbits Earth at an average altitude of 248 miles (400 kilometers). At night, the ISS is visible from Earth, appearing as a luminous moving point of light and rivaling the brilliant planet Venus in brightness. It can be seen without the use of a telescope by night sky observers who know when and where to look. For more information on how to see and track the ISS, check out our guide. You can also take pictures of the International Space Station with the right equipment; our guide takes you through how to photograph the ISS.
7. How Fast Does the ISS Travel Around the Earth?
The ISS circles Earth every 90 minutes at a speed of about 17,500 mph (28,000 km/h). In one day, the station travels about the distance it would take to go from Earth to the moon and back.
8. How Do Astronauts Get to the ISS?
There is typically an international crew of seven people that live and work inside the ISS. However, during the changeover of crew members, this number can vary; for example, in 2009, 13 crew members visited the ISS. This is also the record for the most people in space at one time. Occasionally, private missions such as those from Axiom Space bring non-professional astronauts on board the space station, too.
Typically, astronauts travel to the space station via SpaceX’s Crew Dragon capsule or, in the case of Russian cosmonauts, a Russian Soyuz capsule. The Soyuz was the primary form of transportation for all astronauts and cosmonauts after NASA’s space shuttle program retired in 2011. Crew Dragon began flying people starting with the Demo-2 mission that launched on May 30, 2020. Boeing’s Starliner is preparing for launching humans after its successful uncrewed Orbital Flight Test 2 (OFT-2) in 2022.
9. What Do Astronauts Do on the ISS?
Once at the station, astronauts will typically spend a mission period of around six months conducting various science experiments and maintaining and repairing the ISS. Outside of work, astronauts will spend at least two hours on exercise and personal care. They also occasionally perform spacewalks, conduct media/school events for outreach, and post updates to social media. The first astronaut to tweet from space was Mike Massimino, who did it from a space shuttle in May 2009.
Bedrooms in the ISS typically include small bunk beds. The astronauts tether themselves to a wall or allow themselves to freely float in the small space, depending on their preference. Crews temporarily visiting for just a few days may sleep in their spaceship or in a spare spot on the station, which is allowed as long as they tether themselves in space.
The ISS is a platform for long-term research for human health, which NASA bills as a key stepping stone to letting humans explore other solar system destinations such as the moon or Mars.
NASA astronaut Jessica Meir cutting Mizuna mustard green leaves on the ISS
NASA astronaut Jessica Meir harvests Mizuna mustard green leaves on the ISS, demonstrating the station’s role in advancing space agriculture and supporting astronaut health.
Human bodies change in microgravity, including alterations to muscles, bones, the cardiovascular system and the eyes; many scientific investigations are trying to characterize how severe the changes are and whether they can be reversed. Astronauts also participate in testing out products — such as an espresso machine or 3D printers — or doing biological experiments, such as on rodents or plants, which the astronauts can grow and sometimes eat in space. As the only microgravity laboratory in existence, the ISS has facilitated more than 3,600 researchers to conduct more than 2,500 experiments to date.
Astronauts only have limited spare time in space, but they use it for activities like looking out the window, talking with friends and family, taking pictures or doing hobbies like playing instruments or sewing. One astronaut, Mark Kelly, once donned a gorilla suit on the ISS in 2016 as a practical joke on ground controllers.
Crews are not only responsible for science but also for maintaining the station. Sometimes, this requires that they venture on spacewalks to perform repairs. From time to time, these repairs can be urgent — such as when a part of the ammonia system fails, which has happened a couple of times. Spacewalk safety procedures were changed after a potentially deadly 2013 incident when astronaut Luca Parmitano’s helmet filled with water while he was working outside the station.
NASA now responds quickly to “water incursion” incidents. It also has added pads to the spacesuits to soak up the liquid, and a tube to provide an alternate breathing location should the helmet fill with water. In May 2022, NASA suspended spacewalks again following another water incursion incident, which is still being investigated; Russian Orlan spacewalks are still continuing as that is an independently manufactured spacesuit.
NASA has produced several machines to reduce the need for spacewalks, including the humanoid Robonaut 2. The dexterous machine joined the ISS crew back in 2011, however, after discovering a fault in the machine, Robonaut 2 was sent home to Earth in 2018, for repairs. Also, onboard the ISS are several external robotic arms that can tackle maintenance issues remotely, such as the Special Purpose Dexterous Manipulator (SPDM) — also known as Dextre — and the Canadarm2 (a 57.7-foot-long robotic arm). A European Robotic Arm on the Russian segment will be the third large operational arm on the space station following the end of its installation and commissioning, which is ongoing in 2022.
10. How Big is the International Space Station?
The space station, including its large solar arrays, spans the area of a U.S. football field, including the end zones, and has a mass of 925,335 lbs. (419,725 kilograms), not including visiting vehicles. The complex now has more livable room than a conventional 6-bedroom house and has 2 bathrooms, gym facilities and a 360-degree bay window. Astronauts have also compared the space station’s living space to the cabin of a Boeing 747 jumbo jet.
Cosmonaut Anton Shkaplerov jettisons a container after installing the docking target on Russia's Prichal module
Cosmonaut Anton Shkaplerov discards a container after installing a docking target on Russia’s Prichal module, illustrating the ongoing maintenance and upgrades performed on the ISS.
11. Inside the International Space Station
The International Space Station was taken into space piece-by-piece and gradually built in orbit using spacewalking astronauts and robotics. Most missions used NASA’s space shuttle to carry up the heavier pieces, although some individual modules were launched on single-use rockets. The ISS includes modules and connecting nodes that contain living quarters and laboratories, as well as exterior trusses that provide structural support, and solar panels that provide power.
The first module, the Russia Zarya, launched on Nov. 20, 1998, on a Proton rocket. Two weeks later, space shuttle flight STS-88 launched the NASA Unity/Node 1 module. Astronauts performed spacewalks during STS-88 to connect the two parts of the station together; later, other pieces of the station were launched on rockets or in the space shuttle cargo bay. Some of the other major modules and components include:
- The truss, airlocks and solar panels (launched in stages throughout the ISS lifetime; docking adapters were launched in 2017 for new commercial spacecraft)
- Zvezda (Russia; launched in 2000)
- Destiny Laboratory Module (NASA; launched 2001)
- Canadarm2 robotic arm (CSA; launched 2001). It was originally used only for spacewalks and remote-controlled repairs. Today it also is regularly used to berth cargo spacecraft to the space station – spacecraft that can’t use the other ports.
- Harmony/Node 2 (NASA; launched 2007)
- Columbus orbital facility (ESA; launched 2008)
- Dextre robotic hand (CSA; launched 2008)
- Japanese Experiment Module or Kibo (launched in stages between 2008-09)
- Cupola window and Tranquility/Node 3 (launched 2010)
- Leonardo Permanent Multipurpose Module (ESA; launched for permanent residency in 2011, although it was used before that to bring cargo to and from the station)
- Bigelow Expandable Activity Module (private module launched 2016)
- NanoRacks Bishop Airlock (launched 2020)
- Nauka, Multipurpose Laboratory Module (launched 2021)
- Prichal, a Russian docking module (launched 2021)
Russia's Nauka module pictured shortly after docking to the Zvezda service module
Russia’s Nauka module docks with the Zvezda service module, highlighting the international contributions and the continuous expansion of the ISS.
12. What Else Visits the ISS?
Besides the space shuttle and Soyuz, the space station has been visited by many other kinds of spacecraft. Uncrewed Progress (Russia) vehicles make regular visits to the station. Europe’s Automated Transfer Vehicle and Japan’s H-II Transfer Vehicle used to do visits to the ISS as well until their programs were retired.
NASA began developing commercial cargo spacecraft for the space station under the Commercial Orbital Transportation Services program, which lasted from 2006 to 2013. Starting in 2012, the first commercial spacecraft, SpaceX’s Dragon, made a visit to the space station. Visits continue today with Dragon and Northrop Grumman’s Cygnus spacecraft under NASA’s Commercial Resupply Services program. Boeing is developing its Starliner for future human visits, too.
The SpaceX Dragon CRS-25 spacecraft departs the International Space Station during orbital sunrise
The SpaceX Dragon CRS-25 departs the International Space Station, demonstrating the role of commercial spacecraft in resupplying and maintaining the station.
13. Records in Space
The ISS has had several notable milestones over the years, when it comes to crews:
- Most consecutive days in space by an American: 355 days, which happened in 2021-2022 with NASA astronaut Mark Vande Hei.
- Longest single spaceflight by a woman: 328 days, during American astronaut Christina Koch’s 2019-20 mission aboard the space station.
- Most total time spent in space by a woman: Again, that’s Peggy Whitson, who racked up most of her 665 days in space on the ISS.
- Most women in space at once: This happened in April 2010 when women from two spaceflight missions met at the ISS. This included Tracy Caldwell Dyson (who flew on a Soyuz spacecraft for a long-duration mission) and NASA astronauts Stephanie Wilson and Dorothy Metcalf-Lindenburger and Japan’s Naoko Yamazaki, who arrived aboard the space shuttle Discovery on its brief STS-131 mission.
- Biggest space gathering: 13 people, during NASA’s STS-127 shuttle mission aboard Endeavour in 2009. (It’s been tied a few times during later missions.)
- Longest single spacewalk: 8 hours and 56 minutes during STS-102, for an ISS construction mission in 2001. NASA astronauts Jim Voss and Susan Helms participated.
- Longest Russian spacewalk: 8 hours and 13 minutes during Expedition 54, to repair an ISS antenna. Russian astronauts Alexander Misurkin and Anton Shkaplerov participated.
NASA astronaut Mark Vande Hei soon after landing in Houston, Texas after a return from a nearly year-long mission in space in 2021-22
NASA astronaut Mark Vande Hei lands in Houston after a year-long mission, illustrating the endurance and commitment of astronauts living and working on the ISS.
14. International Space Station and Russia
Russia is a major partner in the International Space Station, but that relationship is changing. In February 2022, Russia undertook an internationally condemned invasion of Ukraine. As a result, numerous international space partnerships were dissolved. Russia, the United States and the other ISS partners do continue to operate the space station as normal, for now, NASA has emphasized.
In July 2022, Russia announced it would withdraw from the ISS after 2024. Its goals, Roscosmos said, are to build a new Russian Orbital Space Station around 2028 or so. The withdrawal will be gradual and the international partners are in discussions about the transition.
The ISS cannot be separated into independent Russia and United States sections as the complex is interdependent. NASA has said the U.S. supplies power, while the Russians control major propulsion maneuvers. It may be possible to independently raise the orbit of the ISS through U.S. spacecraft, which NASA and its partners are testing.
The ISS does require such maneuvers to avoid falling into the Earth’s atmosphere and dodging orbital space debris. Russia conducted an anti-satellite missile test in November 2021 that has seen debris come close to the ISS orbit and require the crews to shelter in place; at the time, NASA and the United States expressed displeasure with the situation.
Russia's Soyuz MS-19 spacecraft separates from the International Space Station after 175 days of docked operations
Russia’s Soyuz MS-19 separates from the International Space Station, symbolizing the ongoing, yet evolving, international partnership in space exploration.
15. Additional resources
You can discover more about the ISS with this Haynes manual and through the eyes of the astronaut who lived there a year: Scott Kelly. Endurance: A Year in Space, a Lifetime of Discovery.
If you want to feel like you are living on the ISS yourself, look out the window of the ISS with this amazing visual guide: Interior Space: A Visual Exploration of the International Space Station: Photographs by Paolo Nespoli & Roland Mille.
16. Frequently Asked Questions (FAQ) about the ISS
Here are some frequently asked questions about the International Space Station:
| Question | Answer |
|---|---|
| How fast does the ISS travel around the Earth? | The ISS travels at approximately 17,500 mph (28,000 km/h), orbiting Earth every 90 minutes. |
| What is the primary purpose of the International Space Station? | The ISS serves as a microgravity and space environment research laboratory in which crew members conduct experiments in various fields such as biology, physics, astronomy, and meteorology. |
| How do astronauts get to the International Space Station? | Astronauts typically travel to the ISS via the Russian Soyuz spacecraft or the SpaceX Crew Dragon. |
| How high above Earth does the ISS orbit? | The ISS orbits at an average altitude of 248 miles (400 kilometers) above Earth’s surface. |
| How big is the International Space Station? | The ISS spans the area of a U.S. football field, including end zones. |
| How many people can live on the ISS at once? | The ISS typically houses a crew of seven people, though this number can vary during crew rotations. |
| What countries are involved in the International Space Station? | The ISS is a collaborative project involving five space agencies from 15 countries: the United States, Russia, Japan, Canada, and the countries of the European Space Agency. |
| What kind of research is conducted on the ISS? | Research on the ISS includes studies on human health, biology, physics, astronomy, and Earth science, taking advantage of the unique microgravity environment. |
| Can you see the International Space Station from Earth? | Yes, the ISS can often be seen with the naked eye as a bright, moving point of light in the night sky, especially during dawn or dusk. |
| What happens to the ISS when it is no longer in use? | Current plans suggest that the ISS will be deorbited and safely disposed of in a remote ocean area, but there are ongoing discussions about potentially repurposing it. |
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