One bright day on Earth about 4.5 billion years ago, everything changed. A massive object slammed into the young planet. The impact was so large that bits were flung out into space, eventually ...

The Moon has always held a certain mystery, from influencing tides to inspiring mythology, poetry and scientific inquiry. For decades, astronomers have attempted to answer the same fundamental ...

If an asteroid is on a collision course with the moon, what should humanity do? Try to nudge the space rock out of the way before it strikes? Obliterate it with a nuclear explosion? Those are the ...

The asteroid known as 2024 YR4 is out of sight yet still very much on scientists' minds. The building-sized object, which initially appeared to be on a potential collision course with Earth, is ...

"The most convincing scenario is that most of the building blocks of Earth and Theia originated in the inner solar system. Earth and Theia are likely to have been neighbors." When you purchase through ...

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon, came from closer to the sun. Artist’s impression of the collision between ...

Earth orbit is becoming increasingly crowded. With more than 11,000 active satellites and many thousands more expected in the coming years, as well as more than 1.2 million pieces of space debris ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of a ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) To some, this concern may seem premature. About 10 to 20 missions are headed to the ...