Sentences with phrase «evidence of impact craters»

Last year, her research team delivered the coup de grâce: evidence of an impact crater off the northwest coast of Australia, hidden beneath two miles of sediment on the ocean floor.

Not exact matches

Science can test for the evidence of an event or multiple events having happened in the past, e.g. CMBR, impact craters, fingerprints, geologic strata, etc..

It was geologists who first noticed the evidence of huge impact craters on Earth that had formed long after the solar system settled into its present form, prompting biologists to speculate on whether those collisions dramatically altered life's evolution.

Each grainy image took eight hours to receive, but the payoff was huge: Surprising evidence of deep impact craters banished the popular idea of Mars as a chillier version of Earth.

«I don't believe the evidence of a crater off Madagascar, and the impetus is on Abbott to prove it,» says Jay Melosh, an impact expert at the University of Arizona and an outspoken critic of the theory.

It took another decade of evidence gathering, including the documentation of an impact crater off the Yucatán Peninsula, for the impact theory to win acceptance, he notes.

Titan has few impact craters, meaning that its surface must be relatively young and some combination of processes erases evidence of impacts.

Peering down into impact craters, the probe's cameras have seen evidence that the planet was shaped by several massive floods of lava billions of years ago.

But Gulick, part of a 2016 drilling project to explore the asteroid's crater, said there was little evidence for sufficient amounts of organic matter at the Chicxulub impact site.

There is substantial evidence (iridium anomalies, craters, and shattered quartz fragments) to support such theories and there is good reason to believe that such an impact could create conditions (shock waves, tsunamis, forest fires, acid rain, darkness lasting months or years, global cooling or warming) to eliminate a large portion of the world's species.

It is not clear to me that a comet impact directly into the Laurentide ice sheet would leave either an impact crater or evidence of soot and fires.