times as massive, it self after ten million years instead of tenbillion and be unate to orbit woo muchingwould have frozen.
In 1978, an astrop named Mic made some calculations and concluded tEartable been just 1 percent fartcloser to t’s not muc it enougtle more generous—5 percent nearer and 15 percent fartto be more accurate assessments for our zone of ability—but t is still a narro.
1to appreciate just o look at Venus. Venus is only ty-fivemillion miles closer to t just tesbefore it toucion, Venus is very like Eart tal distance made all to turned out. It appears tduring tem Venus ra t Venus could not o its surface er, rous consequences for its climate. As its er evaporated,toms escaped into space, and toms combined o forma dense atmospifling. Altime ropical verdure, it is mucoofierce an environment for any kind of life t s surfacetemperature is a roasting 470 degrees centigrade (roug), lead, and tmosp ty times t ofEartand. e lack teco make suitsor even spaces o visit. Our knoant radar imagery and some startled squa probe t ioned for barely an ly sting down.
So t’s o travel fart and t but cold, as Mars frigidly attests. It, too, retain a usable atmospurned into a frozene.
But just being t distance from t be tory, for oted and fair, ly it is not. For t you need to have:
t kind of planet.I don’t imagine even many geops, t en interior, but it’s a pretty nearcertainty t all t magma s be here now.
Apart from mucerior created tgassing t o build anatmospic field t sion. Italso gave us plate tectonics, ly smoot o a depters.
t be life in t lonesome ocean, but tainly be baseball.
In addition to erior, s in tproportions. In t literal stuff. to our o discuss it more fully in a minute, but first o considertors, beginning is often overlooked:
1tremops of Yelloone and similar organisms found elses realize t actually life of a type could range muc-even, pero. alking about ions t ures.
e’re a t.Not