Tycho Brahe Planetarium space. The Tycho Brahe Planetarium is home to the largest lunar rock that can be seen outside the US. Weighing more than 200 grams, it was brought back to Earth by the crew on the Apollo 17 mission in 1972. There are also two smaller exhibitions. One about space technology and the other about Tycho Brahe. Tycho Brahe Planetarium The Tycho Brahe Planetarium is located in Copenhagen, Denmark, at the southern end of Skt. Jørgens Sø. It is named after astronomer Tycho Brahe. It was designed by MAA Knud Munk and opened on November 1, 1989. The planetarium is built
Tycho Brahe parallax over any period of six months, during which the angular orientation of a given star would change thanks to Earth's changing position. (This parallax does exist, but is so small it was not detected until 1838, when Friedrich Bessel discovered a parallax of 0.314 arcseconds of the star 61 Cygni.) The Copernican explanation for this lack of parallax was that the stars were such a great distance from Earth that Earth's orbit was almost insignificant by comparison. However, Tycho noted that this explanation introduced another problem: Stars as seen by the naked eye appear small, but of some size,