AST101H1 Lecture Notes - Lecture 1: Dump Truck
17 Sep 2016
School
Department
Course
Professor
23
AST101H1 Full Course Notes
Verified Note
23 documents
Document Summary
Earth is seen as a huge vast external space, but from an astronomical perspective it is. Earth what does earth look like from 350,000 km away? photo on slide. Earths representation from apollo 8, 1968 the first photo of earth taken by human hands. Earth from apollo 17, 1972: this was the last date anyone from mankind walked on the moon + the only image taken of earth by the hands of humans. Looking at photos of earth from different distances: toronto to la distance comparison of the earth to the sun. Shrink the universe by a factor of 10 billion. Far away but might have the right temperature for human life. Earth is far bigger then you can ever imagine. The fastest aircraft we have is 60,000 km/hour if we wanted to go to this star it would take over 76,000 years to get there.
