Scientists have been teaching that the Earth's land mass changes and improves via NATURAL VOLCANISM, among other proceses. AFAIK the Sun behaves pretty much in the same way, as various differentiated Scientists believe that the SUN'S TOTAL MASS IS NOT CONSTANT AS IT AGES.

Be it GLOBAL WARMING OR GLOBAL COOLING, this will mark the first time in World HIstory that Mankind's best, most advanced technologies can empirically observe and measure THE BEGINNING OF A MAJOR EPOCH - this is one reason why SUNSPOT CYCLE "24" IS IMPORTANT AND TROUBLING BECUZ WE ARE NOT ABSOLUTELY CERTAIN HOW THE SUN BEHAVED = DID NOT BEHAVED, EXPANDED = DID NOT EXPAND, ETC. BEFORE AND DURING A MAJOR EPOCH.

THere are other, more extreme dangers from deep space to Man's de facto existence-survival than via space rocks.

Just as WORLD COMMUNISM-SOCIALISM and WORLD ISLAM are working to VALIDATE AND EMPOWER THEIR PRAGMATIC OR REALIST MODELS, THEORIES AND VALUES, ETC.-ISMS, SO ALSO IS POST-MODERN WORLD SCIENCE
AND PHILOSPOHY.

* GLOBAL WARMING = DANGER TO MAN + LIFE, whereas the HADRON COLLIDER TECHS may prove to be a SALVATION FOR MAN, ESPEC FROM HIMSELF.