Sentences with phrase «when giant asteroids»

Terrestrial planet formation models indicate Earth went through a sequence of major growth phases: accretion of planetesimals and planetary embryos over many tens of millions of years; a giant impact that led to the formation of our Moon; and then the late bombardment, when giant asteroids, dwarfing the one that presumably killed the dinosaurs, periodically hit ancient Earth.

That's when the giant asteroid will hit and kill everyone in the world.

All that changed drastically and violently 64.5 million years ago when a giant asteroid slammed into the planet north of the Yucatà¡ n Peninsula, apparently creating a worldwide pall of dust, ash, and debris.

Human activities could change the pace of evolution, similar to what occurred 66 million years ago when a giant asteroid wiped out the dinosaurs, leaving modern birds as their only descendants.

Not exact matches

And we are guaranteed the final «ph - oto» will take place in 3 - 5 billion years when Earth is absorbed by the expanding Sun as - suming we are not wiped out by a wayward asteroid, nuclear war or a few giant volcanoes.

The discovery also casts doubt on the decades - old theory that the circular Procellarum region is a basin, or giant crater, created when a large asteroid slammed into the moon.

The property results from the way they form: When a giant star runs out of fuel and can no longer fight against the crushing force of its gravity, its core shrinks to the size of an asteroid, and most of its mass is blasted away in a titanic explosion called a supernova.

How Hektor became a Trojan asteroid, located at only 5 times the Earth — Sun distance, is probably related to the large scale reshuffling that occurred when the giant planets were still migrating,» said Julie Castillo - Rogez, researcher at the Jet Propulsion Laboratory, California Institute of Technology.

«Not only did a giant asteroid strike, but it happened at the worst possible time, when their ecosystems were vulnerable.

When researchers observed star systems containing debris disks with giant exoplanets in distant orbits, they noted that the star systems had similar dual dust disks analogous to the Solar System's two zones — the asteroid belt (between Mars and Jupiter) and the Kuiper Belt (beyond the orbit of Neptune).

When first announced, all the studio would reveal was that the basic idea is «What if the cataclysmic asteroid that forever changed life on Earth actually missed the planet completely and giant dinosaurs never became extinct?»