ISS Location Fact
Interesting facts about the region the ISS is currently flying over.
Who is on the ISS
Meet the current crew aboard the International Space Station. Real-time astronaut information from our backend.
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About the International Space Station
The International Space Station (ISS) is a modular space station in low Earth orbit. It is a multinational collaborative project involving NASA (United States), Roscosmos (Russia), JAXA (Japan), ESA (Europe), and CSA (Canada). The ISS serves as a microgravity and space environment research laboratory where scientific research is conducted in astrobiology, astronomy, meteorology, physics, and other fields.
Construction of the ISS began in 1998 with the launch of the Russian Zarya module. The station has been continuously occupied since November 2000, when the first crew arrived aboard Soyuz TM-31. With a mass of over 400,000 kg and a habitable volume of about 1,000 cubic meters, the ISS is the largest human-made structure in space.
Orbital Facts
The ISS orbits Earth at approximately 408 km altitude, completing about 16 orbits per day. It travels at roughly 27,600 km/h, meaning astronauts experience 16 sunrises and 16 sunsets every 24 hours. The orbital inclination of 51.6 degrees allows the station to pass over 90% of Earth's populated areas.
Research & Science
Hundreds of experiments are conducted aboard the ISS in biology, physics, astronomy, and meteorology. The unique microgravity environment enables research impossible on Earth, including studies on fluid dynamics, combustion, and human physiology in space.
International Partnership
Since 2000, the ISS has been continuously inhabited. Crews from over 19 countries have visited, making it one of humanity's greatest international cooperation achievements. The partnership demonstrates that nations can work together on ambitious scientific goals.
Space Agencies & Companies
The ISS is operated by five space agencies and supported by commercial partners. Each contributes modules, crew, cargo vehicles, or crew transportation.
NASA USA
National Aeronautics and Space Administration. Leads the US segment, provides the Destiny lab, Cupola, and truss structure. Operates cargo flights via commercial resupply and crew via Commercial Crew. Manages the live video feeds from the station.
Roscosmos Russia
Russian space agency. Built the Zarya and Zvezda modules, provides Soyuz for crew transport and Progress for cargo. Operates the Russian Orbital Segment. Historically provided the primary crew transport until Commercial Crew.
ESA Europe
European Space Agency. Contributed the Columbus lab and the Automated Transfer Vehicle (ATV). Provides the European Robotic Arm. Member states conduct research and send astronauts via NASA or Roscosmos flights.
JAXA Japan
Japan Aerospace Exploration Agency. Built the Kibo laboratory, the largest single module. Operated the HTV (Kounotori) cargo spacecraft. Conducts extensive research in life sciences and materials.
CSA Canada
Canadian Space Agency. Provided the Canadarm2 robotic arm and the Mobile Servicing System, essential for assembly and maintenance. Canadian astronauts have flown numerous missions to the ISS.
SpaceX Commercial
Commercial partner. Dragon cargo spacecraft and Crew Dragon for crew transport. Restored US capability to launch astronauts from American soil in 2020. Regular crew rotations and cargo resupply missions.
ISS Live Cameras
Watch our planet from space through multiple camera feeds installed aboard the International Space Station. NASA's High Definition Earth Viewing (HDEV) experiment and the External High Definition Camera (EHDC) provide stunning views of Earth. The video signal is transmitted via the Tracking and Data Relay Satellite (TDRS) system to NASA's mission control in Houston.
When the ISS is on the night side of Earth, the external cameras show a black screen due to insufficient light. During these periods, you can switch to NASA TV or ESA TV to watch mission coverage, spacewalks, or interior views of the station.
HD Camera
High-definition streaming from the EHDC (External High Definition Camera) assembly. NASA replaced the HDEV experiment with this new high-definition downlink for crystal-clear views of Earth from 408 km above. The EHDC provides the primary public Earth-viewing feed.
SD Camera
Standard definition feed showing Earth and ISS structural details. This camera sometimes captures maintenance activities, scientific experiments, and communications between ground control and astronauts. It offers a different viewing angle from the HD feed.
Space Exploration
The ISS is at the heart of human space exploration. Commercial partners like SpaceX and international agencies continue to expand our presence in space.
SpaceX & Commercial Crew
SpaceX's Crew Dragon spacecraft regularly transports astronauts to and from the ISS. The commercial crew program has restored American capability to launch humans from US soil since 2020. NASA Commercial Crew.
Sen Corporation
Sen.com provides 4K video streaming from the ISS, offering the public unprecedented high-resolution views of Earth from space. Their cameras complement NASA's official feeds.
Future of Space
Beyond the ISS, humanity is preparing for lunar exploration with NASA Artemis and eventual Mars missions. The knowledge gained aboard the ISS is essential for these next steps.
Frequently Asked Questions
Common questions about the ISS live stream, cameras, and space station operations.
Why is the screen sometimes black?
When the ISS is on the night side of Earth, there is insufficient light for the cameras. The station completes about 16 orbits per day, so you'll see daylight views again within 45 minutes. You can switch to NASA TV or ESA TV during night passes.
Are the images real or computer-generated?
The HD and SD camera feeds are 100% real, transmitted live from the International Space Station. They are not CGI or manipulated. NASA's cameras stream directly from orbit via the Tracking and Data Relay Satellite (TDRS) system.
What is the Sen.com 4K camera?
Sen.com provides ultra-high definition 4K streaming from the ISS. This commercial camera offers sharper views of Earth than the standard NASA feeds. Availability may vary depending on ISS operations and communications.
How fast does the ISS travel?
The ISS orbits at approximately 27,600 km/h (17,100 mph), completing one orbit every 90 minutes. At this speed, astronauts experience 16 sunrises and 16 sunsets each day.
How can I know when the ISS will pass over my region?
It is possible to predict when the ISS will be visible from your location using orbital calculations based on your coordinates. Our mobile app provides precise pass predictions, visibility times, and optional notifications. Download the app to get started.
Does NASA turn off the cameras when passing over certain regions to hide something?
No. NASA does not shut down the cameras to conceal anything. Signal loss occurs when the ISS passes through coverage gaps where no Tracking and Data Relay Satellite (TDRS) or ground station can receive the transmission. The station orbits at 408 km altitude and relies on a network of relay satellites; when the ISS is outside that network's line of sight, the video feed is temporarily unavailable until contact is restored.
How do astronauts eat in space and how often are supplies delivered?
Astronauts eat pre-packaged meals that are rehydrated or heated. Food is stored in pouches and containers; there are no refrigerators, so items are either dehydrated, thermostabilized, or in natural form. Cargo spacecraft (such as SpaceX Dragon, Northrop Grumman Cygnus, and Russian Progress) deliver supplies roughly every two to three months. Resupply missions bring food, water, experiments, and spare parts to keep the crew and station operational.
How do astronauts perform spacewalks?
Spacewalks (extravehicular activities, or EVAs) are done outside the ISS in pressurized spacesuits. Astronauts exit through airlocks, often the Quest or Poisk modules. They use tethers and foot restraints to stay secure while conducting repairs, installing equipment, or performing experiments. Each spacewalk is carefully planned and rehearsed on Earth; mission control monitors the crew and guides them through procedures. Spacewalks typically last 6 to 8 hours.
Why aren't stars visible in the ISS camera footage?
The cameras are set for daylight views of Earth, which is much brighter than stars. To capture Earth clearly, the exposure is tuned for bright sunlight. Stars are far dimmer, so they do not register in the same frame. It is similar to taking a photo of a lit room: the window may appear washed out while objects outside are invisible. To see stars, the camera would need a longer exposure and different settings, which would overexpose Earth and make the main subject unusable.
How do astronauts maintain their health in orbit and what effects do they face when returning to Earth?
In microgravity, astronauts exercise about two hours daily on treadmills, stationary bikes, and resistance devices to counteract muscle and bone loss. They follow strict nutrition and sleep schedules. Despite this, long missions cause bone density loss, muscle atrophy, fluid shifts, and vision changes. Upon return, they experience dizziness, weakness, and balance issues as the body readapts to gravity. Rehabilitation typically lasts weeks to months, depending on mission length.
