Sentences with phrase «giant asteroid»
The phrase "giant asteroid" refers to a very large piece of rock or debris that floats or moves through space. It is much bigger than a typical asteroid and can have a significant impact if it collides with another object, such as a planet or another asteroid. Full definition
New research shows that more than four billion years ago, the surface of Earth was heavily reprocessed — or mixed, buried and melted — as a result of giant asteroid impacts.
sciencedaily.com
On September 16, 2011, NASA's Dawn Mission, released a video of the surface of giant asteroid or protoplanet Vesta.
Geologic record of partial ocean evaporation triggered by giant asteroid impacts, 3.29 — 3.23 billion years ago.
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.
Astronomers Get First Look at Giant Asteroid: «Seeing the surface up close for the first time, in its true glory, is amazing,» says Dawn project lead scientist Christopher Russell.
The term «Disaster Movie» is liable to conjure up images of camp disposable entertainment, involving giant asteroids and the worlds certain annihilation.
The two giant asteroids straddle what some astronomers call the dew line in the solar system.
«With giant asteroids and meteors colliding, there's a lot of destruction,» said Horst Marschall, a geologist at WHOI and coauthor of the paper.
While researchers estimate accretion during late bombardment contributed less than one percent of Earth's present - day mass, giant asteroid impacts still had a profound effect on the geological evolution of early Earth.
If there's a giant asteroid expected to hit Earth, NASA and FEMA are responsible for getting the news out.
Getting economists to describe it is a bit like asking an astrophysicist to give you a detailed picture of what would happen if a giant asteroid hit the earth — no one really knows because, thank goodness, it has never happened before.
Bruce Willis and Ben Affleck lead a team of deep core drillers to a giant asteroid to destroy it before it hits earth.
At any time a giant asteroid could smash into our planet and change our world forever.
That's when the giant asteroid will hit and kill everyone in the world.
I have heard the theory of a giant asteroid hitting.
Dawn visited the giant asteroid Vesta from 2011 to 2012, delivering more than 30,000 images of the body along with many other measurements, and providing insights about its composition and geological history.
Almost nothing is known about the dinosaurs that lived in Africa at the end of the Cretaceous period 66 million years ago, just before they were wiped out by the impact of a giant asteroid.
Almost simultaneous with the birth of discover, physicist and Nobel laureate Luis Alvarez (along with his son, Walter Alvarez of the University of California, Berkeley) proposed that a giant asteroid impact killed off the dinosaurs by causing global firestorms and dust clouds that blotted out the sun.
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.
Early detection is important because it increases the chance of being able to deflect a giant asteroid before impact.
A giant asteroid impact in the dwarf planet's past offers new insights into the possibility of an ocean beneath its surface.
Until Dawn's arrival, the only clues about Vesta came from grainy telescope images and meteorites that had fallen to Earth, many of which are believed to have come from the giant asteroid.
The Dawn spacecraft reveals how the giant asteroid's blemishes are removed, but why aren't the rigors of space aging it?
The Dawn spacecraft is on just such a mission: a journey first to the giant asteroid Vesta and then on to the dwarf planet Ceres.
Piecing those clues together, the two Alvarezes proposed a radical idea: The mass extinction that wiped out the dinosaurs 65 million years ago was caused by the impact of a giant asteroid, which unleashed a globe - spanning cloud of debris and plunged the planet into darkness for months.
Giant asteroids, supernovae, gamma rays could boil all the water off our planet.
Giant asteroid may have triggered deadly volcano eruptions.
Some 66 million years ago, they suggested, a giant asteroid hit the Earth, destroying the dinosaurs and much other life.
A similar system propelled the Dawn spacecraft to the giant asteroid Vesta and will, by 2015, carry it onward to the dwarf planet Ceres [see «New Dawn for Electric Rockets,» by Edgar Y. Choueiri; Scientific American, February 2009].
Around 66 million years ago, at the end of the Cretaceous period, a giant asteroid crashed into the present - day Gulf of Mexico, leading to the extinction of the non-avian dinosaurs.
«Not only did a giant asteroid strike, but it happened at the worst possible time, when their ecosystems were vulnerable.
Ceres, a dwarf planet or giant asteroid (depending on the definition used), is the largest object in the asteroid belt, orbiting at 2.8 astronomical units (the distance from Earth to the sun).
As we did with Vesta Fiesta heralding the mission's arrival at the giant asteroid in 2011, i C Ceres will provide a forum and resources for events to be held across the country and around the world.
Space agencies like NASA may not even be able to stop asteroids they've been tracking for years, when it comes down to it — the giant asteroid Bennu, for example, has a very small chance of having a cataclysmic collision with Earth — but the plans NASA has put together to deflect it may not be enough.
Launched in September 2007, Dawn explored the giant asteroid Vesta for 14 months in 2011 and 2012, capturing detailed images and data about that body.
Bolstered by scientific facts, this chilling docu - drama depicts how the world as we know it would come to an end if a giant asteroid slammed into the Earth.
It's written and directed by «Nick and Norah's Infinite Playlist» scribe Lorene Scafaria and looks like a lot of fun with a light dash of heart and a giant asteroid heading toward Earth.
This ground breaking post-apocalyptic survival game will have players taking the role of Jacob Solomon, survivor of an extinction level event caused by a giant asteroid impacting Earth.
The plot involves a giant asteroid headed for the planet, stopping Teams Magma and Aqua from attacking the Mossdeep Space Center, a space battle between Rayquaza and Deoxys, and surely other shenanigans as well.
Matilda, a giant asteroid, is headed towards Earth and life will cease to exist in 3 weeks.
Mikami, of course, gets a giant asteroid that takes quite a few shots before it explodes.
This ground breaking post-apocalyptic survival game will have players taking the role of Jacob Solomon, survivor of an extinction level event caused by a giant asteroid impacting Earth.
Visit different planets and fend off giant asteroids and waves of enemies by utilizing three upgradeable weapons to save your home solar system from total annihilation.
We'd understand it if we could envision it as a giant asteroid heading towards the earth.
It might not be worth our time, for example, to hedge against the tiny possibility of a giant asteroid hitting the Earth, even though its effects would surely be catastrophic.