why have the planets been orbiting the sun for the last 4.5 billion years (2 reasons)
best answer 10 pts
ive been looking evrywhere for the answers
2007-11-27 10:24:59 · 3 answers · asked by ♥megan♥ 2 in Science & Mathematics ➔ Astronomy & Space
Not sure what you're after, but...
(1) We know that the age of the Earth is about 4.5 billion years through a variety of techniques such as radioactive dating.
(2) The gravitational orbits of the planets are relatively stable, so they haven't changed much in the last five billion years or so when the planets formed from the original solar nebula.
Is that what you're looking for?
2007-11-27 10:59:17 · answer #1 · answered by jgoulden 7 · 0⤊ 0⤋
"ive been looking evrywhere for the answers"
EVERYWHERE? Even on Wikipedia? Hard to believe.
:-)
2007-11-27 10:27:59 · answer #2 · answered by Anonymous · 0⤊ 1⤋
1) Sheer laziness
2) Rampant obsessive-compulsive disorder
2007-11-27 15:20:24 · answer #3 · answered by Ultraviolet Oasis 7 · 0⤊ 0⤋