earth revolves in eliptical path?

by wasi-uz-zaman
Tags: earth, eliptical, path, revolves
wasi-uz-zaman is offline
Dec30-12, 07:04 AM
P: 40
hi , how earlier scientist figure out that earth has elliptical motion rather than circular around sun?
Phys.Org News Partner Astronomy news on
Unique pair of supermassive black holes in an ordinary galaxy discovered
Red stars and big bulges: How black holes shape galaxies
Image: X-raying the cosmos
mfb is offline
Dec30-12, 08:05 AM
P: 10,840
You can track the relative position of earth and sun relative to stars - the orbital speed depends on our distance to the sun, if that changes the orbit has to be a (true) ellipse.
You can use observations of other planets as well, but that is tricky as those move significantly within a year.
Dr_Morbius is offline
Dec31-12, 05:22 PM
P: 155

Register to reply

Related Discussions
Path to be an Earth Science teacher Academic Guidance 2
what is the path of earth in 4-d space?? Special & General Relativity 4
General Relativity- the Sun revolves around the Earth? General Physics 75
Why is earth's path is elliptical? General Astronomy 8
The Sun revolves around the Earth? Special & General Relativity 12