If the impactor's core had been sufficiently smaller and less dense than the Earth's, a thin stratified layer at the top of the Earth's core could have formed.

Harvard astrophysicists proposed a new model showing that the Chicxulub impactor — the celestial body responsible for the mass extinction of the dinosaurs — could have been of cometary, rather ...

Today, the impactor represents more than just one bad day on Earth; instead, it has become a kind of Rosetta Stone that can decipher deeper riddles about the origins of life and the future of ...

The impactor that created it was sufficiently large (between 11 and 81 kilometers, or 7 to 50 miles) to melt, shock, and eject granite from deep inside the Earth, probably causing a megatsunami ...

What is an imminent impactor? An imminent impactor is an asteroid that is discovered hours before its impact on the Earth’s atmosphere. According to Space.com, the European Space Agency as well ...

But this new lunar-impactor theory provides a solution. In fact, the outcome of Mojzsis’ team’s analysis shows that the impactor's core is sheared and disintegrated, and falls back to Earth in ...

This story was updated at 3:58 a.m. EDT. PASADENA -- The Deep Impact mission is nowless than 24-hours and 500,000 miles from its final destination after thespacecraft's Impactor probe successfully ...

Although Dr. Bottke remains unconvinced that the impactor had a cometary origin, he noted that the asteroid explanation also raised many exciting and unresolved questions.

Previous estimates for the Vredefort impactor place it at about 9 miles in diameter with an impact velocity of 9 miles/s. That would excavate a crater about 107 miles in diameter.

The crash released a plume of material that was examined at a range of different wavelengths. But whilst the other observatories made relatively quick studies and then turned away, Swift continued to ...