1. For those lucky enough to see it, the transit of Venus was one of the astronomical highlights of 2012.

2. A year and a half ago, America came close at least in astronomical terms to finding out what could happen.

3. It was in these, on the middle floor, that the primary astronomical instruments were housed.

4. The skies of the Southern Hemisphere offer a rich variety of astronomical highlights.

5. The GMT correlation is based on a few historical texts as well as astronomical data.

6. The dimensions of these astronomical zones vary from star to star, since some stars are hotter than others.