科学与环境
Ancient sea levels reveal when the Earth's poles went wandering
来源: Phys.org - latest science and technology news stories · 发布于
Earth's poles do not always stay in the same place. For example, a region once near the North Pole can end up near the equator, and an area near the equator can shift up toward the pole. This is known as true polar wander (TPW), and it's when Earth's crust and mantle shift togeth
Earth's poles do not always stay in the same place. For example, a region once near the North Pole can end up near the equator, and an area near the equator can shift up toward the pole. This is known as true polar wander (TPW), and it's when Earth's crust and mantle shift together relative to its spin axis.
相关报道
Ancient meteorites reveal a powerful force that helped build the Solar System
Ancient grains inside one of the oldest known meteorites reveal that a surprisingly strong magnetic field existed during the solar system’s first 200,000 years. The discovery suggests magnetism worked alongside gravity to help transform a vast cloud of gas and dust into the sun a
All Top News -- ScienceDaily ·
Animals may have evolved vastly earlier than fossil evidence suggests
The earliest animals may have evolved hundreds of millions of years before their first unmistakable fossils appear in the fossil record, according to a new study led by the University of Oxford. The findings, published in Science Advances, suggest animals may have originated deep
Phys.org - latest science and technology news stories ·
What space travel teaches us about sleep and circadian rhythms
On Earth, most of us rarely have to think about the signals that keep our internal clocks aligned. The sun rises, daylight changes, darkness arrives and morning comes again.
Phys.org - latest science and technology news stories ·
How to see the Orionid meteor shower this weekend
Friday sees the start of the Orionid meteor shower as Earth passes through debris left behind by Halley’s Comet. It peaks later in October.
feeds.bbci.co.uk ·
Pompeii’s 2,000-year-old eruption just gave scientists a better clock for Earth’s past
Mount Vesuvius’ famous 79 CE eruption has given scientists a remarkably precise benchmark for dating events deep in Earth’s past. The improved technique could sharpen the timelines of volcanic eruptions, asteroid impacts, extinctions, and other major moments in geological history
All Top News -- ScienceDaily ·