Tag: earth

Remember that asteroid that isn’t going to hit Earth? We could send a mission to explore it

ASTRONOMY
Last year, astronomers detected the near-earth asteroid (NEA) 2024 YR4, which orbits the sun every four years and periodically crosses Earth's orbit. The nature...

Volcanic activity billions of years ago set the stage for Earth’s oxygen-rich atmosphere, research suggests

VOLCANOES
It is widely believed that Earth's atmosphere has been rich in oxygen for about 2.5 billion years due to a relatively rapid increase in...

Can surface fractures on Earth, Mars, and Europa predict habitability on other planets?

ASTRONOMY
When a mudflat crumbles on Earth, or an ice sheet splinters on one of Jupiter's moons (Europa), or an ancient lakebed breaks on Mars,...

Melting Antarctic ice sheets are slowing Earth’s strongest ocean current, research reveals

OCEANOGRAPHY
Melting ice sheets are slowing the Antarctic Circumpolar Current (ACC), the world's strongest ocean current, researchers have found. This melting has implications for global...

Scientists match Earth’s ice age cycles with orbital shifts

ASTRONOMY
Beginning around 2.5 million years ago, Earth entered an era marked by successive ice ages and interglacial periods, emerging from the last glaciation around...

Solar system’s journey through Orion complex 14 million years ago may have altered Earth’s climate

ASTRONOMY
An international research team led by the University of Vienna has discovered that the solar system traversed the Orion star-forming complex, a component of...

Laser-powered device tested on Earth could help detect microbial fossils on Mars

MARS
The first life on Earth formed four billion years ago, as microbes living in pools and seas: what if the same thing happened on...

A new theory explains how water first arrived on Earth

EARTH
When Earth first formed, it was too hot to retain ice. This means all the water on our planet must have originated from extraterrestrial...

An asteroid has a 2% chance of hitting Earth in 2032. Here’s how astronomers are tracking it

ASTRONOMY
A recently discovered asteroid, named 2024 YR4, has on average a 2% chance of hitting Earth in 2032. While those odds of an impact...

Earth’s magnetic field triggers a superpower in sea turtles that makes them ‘dance’

PALEONTOLOGY
One of Earth’s deepest mysteries lies beneath our feet: the planet’s inner core. Made of iron and nickel, the hot, solid sphere is about 70%...

Research reveals how Earth got its ice caps

EARTH
The cool conditions which have allowed ice caps to form on Earth are rare events in the planet's history and require many complex processes...

Earth’s inner core is less solid than previously thought: Study reveals structural transformation

EARTH
The surface of the Earth's inner core may be changing, as shown by a new study by USC scientists that detected structural changes near...
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