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Tools for sky observation

Astronomy resources on the Web
Photo: Espace pour la vie (Planétarium de Montréal)
Astronomy resources

Here are some online tools that will help you better prepare for your next night under the stars. For the more adventurous, they will help you plan your next trip to chase the moon's shadow!

Rising and setting times of the Sun and Moon

Light pollution

Is your favourite observing site really dark?


Will the stars be visible tonight?

Eclipses of the Sun and Moon

The NASA/Goddard Space Flight Center eclipse website is arguably THE reference about eclipses. Contains maps and detailed predictions.

Artificial satellites

Where and when to look to see the International Space Station (ISS) and other artificial satellites.

Solar activity and aurora borealis

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