Solar System Essays

Discovery images of the dwarf planet Eris. The three images were taken 1 1/2 hours apart on the night of October 21st, 2003. Eris can be seen very slowly moving across the sky over the course of 3 hours. Eris was discovered in July, 2005 by Mike Brown of CalTech …

1) What do we mean by a geocentric universe? Contrast a geocentric view with our modern view of the universe. Geocentric describes the idea that everything revolved around Earth, compared to modern knowledge that everything revolves around the Sun (our star). 2) Briefly describe the major levels of structure (such …

Edwin Hubble was one of the first people to actually realise what a galaxy is, the measurement of the “Hubble Tuning Fork” Classification scheme shows how round or rightly wound their “arms” are. E0 means that an elliptical galaxy is extremely round, whilst E7 is flat. However not all galaxies …