Sentences with phrase «major asteroid»

Everything in ecology short of a bulldozer or major asteroid strike is a necessary but not sufficient condition.

There is GREAT UNCERTAINTY as to WHEN our planet will be hit by a major asteroid, although it is fairly CERTAIN that this will happen again some day, and — when it does — it is fairly CERTAIN (based on previous incidents) that the impact on our environment and on human society will be DISASTROUS.

So we could say (in IPCC parlance) from past experience and from all the stuff floating around out there that we are «virtually certain» (> 99 %) to be struck by a major asteroid some day in the future, and this is «very likely» (> 90 %) to occur within the next 5 to 10 million years.

Of course geological history suggests that neither run away warming nor catastrophic cooling (within the time scales of years to several decades) are anything other than highly improbable (without some catastrophe such as a major asteroid strike), but it is the job of military planners to have some contingency for all eventualities.

Since our current atmospheric carbon dioxide rise is unprecedented in geological history, short of a major asteroid impact, I would suggest otherwise.

They're the largest mammal likely to last through a major asteroid impact.

«The predicted mean time between major asteroid collisions [for each asteroid] is about 5 % of the age of the solar system.

For instance, the famous K - T event or K - T boundary, which marked the end of the Cretaceous period 65 million years ago, features a global layer of the element iridium in rock, the signature of a major asteroid impact.

The Gale crater on Mars is believed to have been formed following a major asteroid impact.

A major asteroid strike on the planet could cause widespread devastation.

For instance, «rocks from Earth have reached Mars, but only after a major asteroid impact launched them.»

His hypothesis depends on a major reinterpretation of many different mythologies and raises questions about how frequently major asteroid impacts occur.

NASA's other major asteroid - deflection initiative is the opposite in almost every way: the splashy, controversial, exploration - oriented proposal currently known as the Asteroid Redirect Mission.

What GCM's try to do is not only predict the density of asteroids in the next 100 years, but also tell you which path the major asteroids will take.

Not exact matches

Jews have been blamed for nearly every major disaster short of asteroid strikes in humanity's history over the course of the last 5000 years even today.

Amateur astronomers, long major players in ascertaining the exact orbits of asteroids, are likely to play less and less of a role as professionals turn their powerful telescopes to the objects once considered too mundane for academics to study at all.

Scientists have long debated the causes of this event and Earth's four other major extinctions, usually pointing to various volcanoes or asteroids.

The threat to our security is in the form of asteroids too small to be detected at long range but large enough to cause major catastrophes; NASA is now searching for asteroids one kilometer or larger in diameter, the impact of which could have global consequences.

One major question about Phobos and Mars» even smaller moon, Deimos, is whether they are captured asteroids or bits of Mars knocked into the sky by impacts.

If an asteroid hits a major city, only 3 per cent of the casualties will be from the crater it forms — most will be from overheated air and high winds

A major collision can shatter both asteroids into debris that will SLOWLY drift apart to form an asteroid group in separate but similar orbits around the Sun (Science, 23 November 2001, p. 1696).

An asteroid five miles wide would cause major extinctions, like the one that may have marked the end of the age of dinosaurs.

So if we're safe from the really big asteroids, and the smaller, more frequent ones are likely to hit without major incident, what's the problem?

The asteroid was one of several major blows that life suffered at the end of the Cretaceous.

The world's most sensitive asteroid hunter has chalked up its first major catch.

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.

In two talks today at the Division for Planetary Sciences in Pasadena, California, astronomers report that a small asteroid located in the inner asteroid belt between those two planets took a major hit early last year.

What's more, all three major groups — Palaeognathae, Galloanseres, and Neoaves — had already arisen by the time the dino - killing asteroid smacked our planet 66 million years ago, the researchers report online today in Science Advances.

Opal, familiar on Earth as a precious stone used in jewellery, is made up of silica (the major component of sand) with up to 30 % water in its structure, and has not yet been identified on the surface of any asteroid.

Nelson downplayed the differences between the House and Senate bills, saying that apart from the funding amounts, the only major disagreement is that the House bill prohibits funding for NASA's proposed asteroid redirect mission (ARM) while the Senate bill is silent on it.

Scientists used up - to - date fossil records and improved analytical tools to find that, in the few million years prior to the asteroid impact that created the Yucatan's Chicxulub crater in Mexico, Earth was experiencing a major transformation in its environment, including widespread volcanic activity, changing sea levels and varying temperatures.

Major extictions also occurred at the end of the Cretaceous 65 mya, believed to be related to an asteroid crash into the sea off the Yucatan Peninsula.

Scientists have discovered a new branch of the Taurids meteor stream that could pose a major risk to Earth, with asteroids up to 1,000 feet wide flying past us every few years.

Other major meetings attended by section officers were the EUROPLANET N3 Strategic Workshop «Stellar Occultation Studies» in Paris and Meeting on Asteroids and Comets in

Even in the end Cretaceous extinction, in which dinosaurs were finally wiped out by an asteroid impact, a major global - warming extinction event was already underway causing a major extinction within 150,000 years of the impact.

Zoning in on the latter would be a major development, as space agencies have spent more than a billion dollars on probes to retrieve samples from asteroids.

Since then, astronomers have become increasingly a ware of the risk of future impacts, and major efforts are underway to discover and calculate the orbits for all asteroids larger than 1 km wide.

Research studies including search for moons around asteroids and planets around other stars using a wide variety of instruments leading to 85 publications in major journals including Nature and Icarus

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Together, we steered our ship through randomly generated asteroid fields, destroyed enemy ships, rescued adorable rabbits before finally being blown to pieces by an Ursa Major bear boss.

The building also houses other galleries such as Vox Populi, Tiger Strikes Asteroid, Marginal Utility, Automat, The Great Far Beyond, Practice, and Grizzly Grizzly and is a major hub for Philadelphia's emerging art scene.

Personally, I believe that before mankind makes something to stop the disastrous behaviour, an asteroid will hit us, or a major earthquake and tsunamis, volcanoes, etc., will end with the World as we know.

Major extictions also occurred at the end of the Cretaceous 65 mya, believed to be related to an asteroid crash into the sea off the Yucatan Peninsula.

«An international team, including members from Imperial College London and the Zoological Society of London, has constructed a complete evolutionary tree tracing the history of all 4,500 mammals on Earth that puts the major diversification 10 - 15 million years after asteroid strike, casting into doubt the role the dinosaur die - off played in the success of our present day mammals.

Thus, there is major uncertainty on this statement in that we know we do not know all the details on the probability of asteroid impacts.

It would also focus on the next massive asteroid impact which will really cause major impact to coastal regions >> > the Indonesian tsunami.

We also can conclude from this that the global surface temperature trends will likely be higher in the coming years than the ones observed since 1998 (assuming no major volcanic eruption, impact by a killer asteroid, or nuclear war).

Right now there is little uncertainty (no large asteroids have a significant chance of hitting the earth in the near future, and geological records show tens of millions of years between major strikes).