Sentences with phrase «collisions with»

Rocky worlds can be pulverised by collisions with each other, mushrooming into synestias before cooling off and becoming more familiar - looking celestial spheres, a new study says.

Collisions with other galaxies, near misses and other forms of violence can dramatically alter or even destroy them.

As the particles journeyed around Earth, the lighter hydrogen particles were lost in collisions with the atmosphere, leaving an oxygen - rich plasma.

«If we wait long enough, our bubble universe will eventually undergo an infinite number of collisions with other bubble universes,» Vilenkin says.

In these crashes, cyclists often had to maneuver quickly to avoid collisions with vehicles, pedestrians or other cyclists and their wheels got caught in the gap alongside the rails (called the flangeway) or slipped on the rail itself.

As it cooled, all the antimatter annihilated in collisions with matter — but for some reason the proportions...

Led by Charles Bennett of Johns Hopkins University, the team accounted for distortions in the microwaves due to collisions with distant clouds of electrons.

Such disasters would create large clouds of shrapnel, making further collisions with other satellites more likely and sparking a chain reaction that would swiftly surround the Earth with belts of debris.

A biologist surveyed the world's hummingbirds to find one with a bill the right shape to pollinate a variety of plants inside the structure, and without a mating display predisposing it to fatal collisions with the glass.

Even in an era of advanced computer modeling, the decade - old test is deemed essential for producing aircraft engines that can withstand the impact (pdf) of collisions with birds, which cause more than a billion dollars» worth of damage worldwide to civil aircraft every year, according to the Bird Strike Committee USA.

Such large numbers are needed because the tiny craft could easily be damaged by high - speed collisions with interstellar dust.

Evidence for light - by - light scattering in heavy - ion collisions with the ATLAS detector at the LHC.

Other factors include collisions with automobiles, territorial disputes with other panthers as habitat shrinks, and inbreeding resulting from their isolated population.

The rocky body — the largest yet to get a close flyby — seems to have been just large enough to avoid being reduced to a flying pile of rubble by eons of collisions with other asteroids.

The biggest share of the deaths comes not from glass massacres at skyscrapers but from occasional collisions with the nation's many small buildings, says Scott Loss of Oklahoma State University in Stillwater.

However, underground detectors are tuned to do just that, i.e., to capture rare events of dark matter particle collisions with an atom inside a detector.

Earth's life - sustaining liquid came from the dust from which the planet was born, a new look at these particles suggests, and not simply from collisions with objects that later crashed into the planet from space.

It could also mean building natural overpasses that would allow animals to cross highways, helping them avoid collisions with vehicles.

A ground - based telescope that can scan the skies faster than any other of its size could help to protect satellites from collisions with space debris and each other.

The effectiveness of current approaches can also be examined, for example increases in Florida manatee deaths due to collisions with watercraft are shown not to be an inevitable outcome from the increasing numbers of boats found on waterways, since the charts indicate that mortality levels can be significantly stabilised with sensible waterway traffic measures.

That is probably because typical spirals such as Andromeda are transformed by collisions with other galaxies over their lifetimes.

Astronomers explained their potatolike shapes as the result of frequent collisions with their neighbors.

The next step, Barnes says, is to study stars for evidence of relatively recent collisions with planets.

With knowledge and planning, they say, it's possible to prepare for — or in some cases prevent — rare but devastating natural disasters such as blasts of particles from the sun, collisions with near - Earth asteroids like the one that wiped out the dinosaurs, and supervolcanoes that dwarf any eruptions in recorded history.

The likely scenario in which this could have happened is if the galaxy hosting the black hole experienced mergers or collisions with other galaxies through its evolutionary history.

George lists a number of observations purportedly supporting multiverse theories that are dubious at best, like evidence that certain constants of nature aren't really constant, evidence in the cosmic microwave background radiation of collisions with other universes or strangely connected space, etc..

This includes running tracks above or below roadways to avoid railroad crossings and fencing off areas to avoid collisions with animals, people and road vehicles.

But as far as they are concerned, «the two largest mass extinctions in Earth history at the K - T and P - T boundaries were both caused by catastrophic collisions with chondritic meteoroids.»

The researchers found that the ultracold molecules were relatively long - lived and stable, resisting reactive collisions with other molecules.

The high - energy ones are also very rare, and none of them get very far once they reach Earth's atmosphere; they're instantly destroyed in collisions with the air at high altitude.

But they can be detected by a special type of apparatus: a huge tank of liquid in which rare antineutrino collisions with atomic nuclei produce faint but measurable bursts of light.

There are immediate reasons to study the vocal patterns of cetaceans: these marine mammals are threatened by human activities through competition for fishery resources, entanglement in fishing gear, collisions with vessels, exposure to pollutants and oil spills and, ultimately, shrinking habitats due to anthropogenic climate change.

The study of the Tunguska event is important because past collisions with extraterrestrial bodies have had major effects on the evolution of the earth.

You ping a single extra photon down towards Earth's surface, and on the way it hits a water molecule in the atmosphere, boosting its energy slightly and changing its future collisions with other molecules.

These include the Facility for Antiproton and Ion Research (FAIR) being built in Darmstadt, Germany, which uses heavy nuclides such as uranium for the initial collisions with light nuclei.

The diminutive space probes would be inexpensive and, therefore, expendable; some could be lost due to technical glitches or collisions with space junk without jeopardizing the entire mission.

Thermal and acoustic sensors are two approaches that could decrease whale collisions with ships and disorientation from sonar

The atom is then transferred into an environment of a light field in which the light - absorption and light - emission of the atoms act as collisions with other particles.

The particles within the environment encounter permanent collisions with a cell or a carrier, thus influencing their motion.

Such planets may create stable regions where Earth - like worlds can form and may shield those worlds from collisions with comets and asteroids.

They are eventually eliminated by orbital decay and accretion by the Sun, collisions with the inner planets, or by being ejected from the solar system by near misses with the planets.

In one study, participants played a game where they had to either be a car avoiding collisions with trucks or a mouse avoiding being caught by a cat.

Collisions with air molecules slow a falling penny.

Decommissioned or damaged satellites, fragments of space stations and other remnants of space missions pose a potential threat of collisions with active satellites and spacecraft every day.

Not for long, though: collisions with trace gases would have either annihilated the anti-atoms or given them the energy to escape, so the team opened the trap after 170 milliseconds and observed the resulting annihilations, verifying that antimatter had been made.

The grains are light enough to be set spinning by collisions with photons and fast - moving atoms, and because some are charged this would cause them to emit microwave radiation.

Seen in seismic - reflection profiles, and in gravity and magnetic surveys, it has traits that are consistent with impact craters, which are caused by collisions with asteroids and comets.

Most follow buried signal - emitting wires and detect end points and collisions with switches, a technique developed in the 1960s.

At Fermilab, a superconducting magnet guides protons to head - on collisions with antiprotons in the Tevatron particle smasher.

The biggest share of the deaths comes not from glass massacres at skyscrapers but from occasional collisions with the nation's many small...