The International Space Station will be visible to the naked eye tonight and tomorrow night. The station orbits the Earth at a height of 254 miles and travels at a mind-blowing 17,500 miles per hour, or 4.76 miles per second.
- Tonight, it will become visible at 8:27 PM in the northwestern sky and will travel to the southwest. It will be visible for about three minutes. It will move at a maximum height of about 43° above the horizon.
- Tomorrow night, it will become visible at 7:39 PM in the northwestern sky and will travel to the southeast. It will be visible for about six minutes. It will move almost directly overhead at about 89° above the horizon.
The space station will look like a bright star, like the North Star, and will be moving quickly across the evening sky.
The space station passes overhead many times a day but lighting conditions usually make it difficult or impossible to see. All sightings will occur within a few hours before or after sunrise or sunset. This is the optimum viewing period as the sun reflects off the space station and contrasts against the darker sky.
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