Bob King Watches an ISS pass

Celestial Objects to Observe

Watch International Space Station Flybys All Night Long

The annual International Space Station marathon viewing season begins later this week, when skywatchers in the Northern Hemisphere can watch up to five successive ISS passes in one night.

Space Satellites

Satellite Transit Tool: Spot ISS Transits of the Sun and Moon

The International Space Station often passes close to the Moon, Sun, and naked-eye planets. Use this tool to plan viewing these close encounters.

International Space Station

Astronomy in Space with David Dickinson

Watch the International Space Station Marathon

The orbiting science laboratory begins a series of marathon passes this week that favor the northern hemisphere.

ISS slips into shadow over Iowa

Explore the Night with Bob King

Watch a Sunset with the ISS Astronauts

Watch the International Space Station as it passes into the shadow of the Earth, and learn what other features to keep an eye out for (such as the "water dump").

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