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Astronomical events

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Transit of Mercury, May 9, 2016

Transit of Mercury - November 11, 2019

A rare astronomical event will take place on November 11, 2019: Mercury will pass directly between the Earth and Sun. For several hours, the planet will appear silhouetted against our daytime star.
The Perseids

Perseids

They return year after year. For many of us, they spell holidays and warm summer nights. But who – or what – are they? The Perseid meteors, of course!
The Mars hoax

The Mars Hoax

In the past few years, the Internet has been flooded with promises of a spectacular and unique view of Mars in late August. You probably received a message or slide show recently in your e-mails – you may even have forwarded it to all your contacts.

Observation tips

Observing the Sun

How to safely observe the Sun

Never look directly at the Sun. Always use a proper solar filter. The Sun's intense radiation (visible light, ultraviolet and infrared) always presents a serious danger to the eye, especially to the central part of the retina known as the macula.
The Perseids

Observing shooting stars

Anyone interested in more than just stargazing can take things even further during an observation session. Just keep track of the number of shooting stars you see per fifteen-minute period, the start and end time of your observation session, the weather conditions and the sky quality (in terms of visual magnitudes).

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