History of Solar System formation and evolution hypotheses with Uranus having a 98° tilt. The Moon being relatively large with respect to the Earth and other moons which are in irregular orbits with respect to their planet is yet another issue. It is now believed these observations are explained by events which happened after the initial formation of the Solar System. Attempts to isolate the physical source of the Sun's energy, and thus determine when and how it might ultimately run out, began in the 19th century. At that time, the prevailing scientific view on the source of the Sun's heat was that it was generated by gravitational
A Beautiful Planet how you use those resources. It reminds us that we have to be better stewards of what we have, and be better crew members of Spaceship Earth." This portrayal of our planet as a fragile, life sustaining spacecraft is introduced in the very first scene. The film begins with a light-years-long, computer-generated trip through swarms of stars in the Milky Way; the compressed trip ends by focusing on the Solar System. Even though our planetary system seems unremarkable, it is in fact "the only place we know, in all the universe, to harbor life." In the film, Jennifer Lawrence's narration