The events News (in Norwegian) Transit of Venus 2012 Transit of Venus 2004 Norsk Total eclipse 2015



With the transit of Venus in 1769 the astronomers for the first time managed to measure the distance to the Sun fairly accurately. But the relative distances were already well known.


Nicholas Copernicus (1473-1543) understood that the planets, including the Earth are orbiting the Sun and that the Earth is not in the center of the Universe. In 1543 he published a describtion of the Solar system. It gave a determination of the mutual distances between the Earth and the Sun and Venus and the Sun.

This is how he calculated it:

Orbits of Earth and Venus.
D is the center of Venus'orbit. C is the center of Earths orbit. At point F the "evening star" Venus is visible from Earth being in point B. At point E the "morning star" Venus is visible from Earth being in point A

Copernicus used these, observed maximum angular distances between the Sun and Venus (numbers are from observations made in the antique!):

Angle DBF = 47.3 degrees, angle DAE = 44.8 degrees.
From here on we need the trigonometric sine function.
It follows that BD=DF/sin 47.3 and AD=DE/sin 44.8 where DE=DR=radius in Venus' orbit.
Radius of Earths orbit AC is one half of BD+AD.
This gives that AC/DE=1/2 [ (1/sin 47.3) + (1/sin 44.8) ]
And therefore DE/AC=0.7196 which is the value calculated by Copernicus as the relationship between the radies of the orbits of Venus and the Earth.


Major celestial events in Norway 2010-2015

Eclipse shades for the events

It is important to get eclipse shades for the unique transit of Venus of June 6, 2012. If you miss this one, you will not have any other opportunity! More information about eclipse shades and solar telescope

Vårt magiske univers: Norwegian film about space

Magnificent images, movies accompanied by majestic music.

Extensive Norwegian DVD about space and eclipses.

Separate tracks about the eclipses in Norway in 1954, Turkey in 2006, the Arctic in 2008 and China in 2009.

News from space in Norwegian

News from space in Norwegian

Web sites News from space in Norwegian describes the spectacular total solar eclipse taking place on Svalbard and the North Pole on March 20, 2015.



Contact: Knut Jørgen Røed Ødegaard, P.O. Box 1029 Blindern, N-0315 Oslo, NorwayPhone: (+47) 992 77 172 E-mail: