This preview shows page 1. Sign up to view the full content.
Unformatted text preview: 3. How fast would the Earth have to be going, compared to its present speed , to escape from the Sun? 4. How much would you have to change the Earths mass to make our year half as long? (You dont get to change the Earth-Sun distance or the Suns mass) 5. If I try to make those observations of the Galilean satellites (see above). How large of a telescope would I need? Assume: Jupiter is at opposition; both the satellites and the planet are single points of light; you are observing at 500nm; and you only need to measure when the satellite is furthest from the planet. (Hint this is a question about telescopic resolution,) 4 points 6. Assume Neptune and Ganymede both reflect the light they receive from the sun. Which is the brightest and by what factor? Jupiter and Neptune are both at opposition and you can assume Ganymede is the same distance from the Earth as Jupiter....
View Full Document
This note was uploaded on 02/12/2012 for the course ASTR 1110 taught by Professor Jpc during the Spring '08 term at University of Georgia Athens.
- Spring '08