Planet Earth
International Astronomical Union WGSN

Welcome to 

the exoplanetarium of the Working Group Star Names

Modern star names are given to (faint) host stars of exoplanets. For bright stars historical names from all over the world are collected and applied to stars according to scientific criteria. 

In our exoplanetarium we present:
 * the modern star names and their (hi)stories
 * constellations and their real (hi)stories  
 * some teaching material for the astronomy of exoplanets 

Star Names

Some star names are historically developed, other take from indigenous cultures and some are totally artificial.



even if you think you know them, you still can learn something new here.

Exoplanets in Astrophysics

analogue experiments to understand exoplanets


work like a real physicist with astronomical topics and household means

Citizen Science

Naked Eye observations:
Participate in data collection! 

Some suggestions for historical experiments.

Latest News

Ian Ridpath: Pictures in the Sky

On July 15, 2020, in a session of the Virtual Astronomy Club, Ian Ridpath spoke about the history of the constellations. A fascinating tale of how the figures, stories and[…]

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screenshot from talk on constellations (linked to youTube)

Pluto (dwarf planet, 2006)

Ketkar and the Discovery of Pluto

The Indian astronomer Ketkar had predicted Pluto (and another planet) much more precise than the American and European people who ran the survey programs. However, the discovery in America in[…]

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at home on planet Earth

… seeking to share knowledge with all humans on this planet.

Some photographs: astronomy on planet Earth

Our world is a beautiful place – we need to take care of it!

Moon Through Telescope

Lunar eclipse, observed at Hildesheim (Europe)

Rainbow above Sahara

Observed in Mauretania (Africa)

Short before Transit of Mercury

northwest Sahara (Africa)

a modern Zeiss planetarium

constellation Orion in the dome