资讯

来自MSN1 个月
Next ice age would hit Earth in 11,000 years if it weren't for climate change, scientists say
Notably, a 1976 study found geological evidence showing that two of Earth's parameters — obliquity and precession, or changes in Earth's axial tilt and how the axis wobbles around itself ...
Nature3 年
Green Sahara: African Humid Periods Paced by Earth's Orbital Changes
The main climatic effect of precession is to shift the season when the Earth has its closest pass to the Sun (perihelion) — the so-called precession of the equinoxes. Today, perihelion occurs in ...
Daily Galaxy on MSN1 个月
Earth’s Next Ice Age Might Already Be on the Way—Here’s What Scientists Just Discovered
Obliquity (40,000-year cycle): The tilt of Earth’s axis changes between 22.1° and 24.5°, affecting how much sunlight reaches ...
Time6 天
Science: The Wobbly Earth
Most of the earth’s wobbling is a grand motion that makes its axis describe a 23° cone once every 26,000 years. This precession is caused by the pull of the sun and the moon acting on the ...