Sentence examples for impact hypothesis from inspiring English sources

The impact hypothesis was resisted until the nineteen-nineties, when the existence of a huge impact crater formed precisely at the end of the Cretaceous was confirmed.

The plant fossil record is consistent with the impact hypothesis, and that the impact itself killed forests at least regionally, followed by a global nuclear winter which led to widespread extinctions cascading through the terrestrial food chain.

Unlike the end-Cretaceous event, there is no consistent evidence in rocks at the Permian-Triassic boundary to support an asteroid impact hypothesis, such as an anomalous presence of iridium and associated shocked quartz (quartz grains that have experienced high temperatures and pressures from impact shock).

This is called the giant impact hypothesis.

The giant impact hypothesis was first posited in the 1970s.

"Advocates of the human impact hypothesis … must challenge [the study's] empirical findings, or modify their position".

These considerations particularly impact hypotheses based on increasing the capabilities of systems already present in the animal, such as the salt gland and olfaction hypotheses, and indicate that these were not primary functions of the crest.

The moon is deficient in certain Earth elements, as the single-impact hypothesis predicts, but the elements it does have—not only oxygen but also titanium, tungsten, and aluminum, among others possess the same isotopic signatures as on our planet.

"That's at the core of the issue we've all been grappling with," Robin Canup, an astrophysicist at the Southwest Research Institute and a longtime proponent of the single-impact hypothesis, told me over the weekend.

Since the nineteen-eighties, the consensus has centered on the single-impact hypothesis, sometimes known as the Big Splash or the Big Splat, which supposes that the moon formed when a planet-size object, often called Theia, crashed into Earth and sent a huge mass of debris into orbit.

The single-impact hypothesis was contested in September by David Jolley of Kings College, Aberdeen, Scot., and four coauthors, who presented evidence that a second, smaller meteorite impact near present-day Boltysh, Ukr., predated the Chicxulub event by 2,000 5,000 years.