![]() ![]() ![]() Other geological evidence points to the Chicxulub crater in Mexico as being where this occurred.ĭark matter is a hypothetical form of matter that has not been directly detected. Evidence suggests that a meteoroid collision caused this extinction. The dinosaurs, along with many other species, were eliminated between the Cretaceous and Paleogene periods in an extinction event known as the K-Pg boundary. There have been five mass extinctions on Earth. These objects are far away from our sun’s gravity and may have brought water and amino acids to Earth. Some objects formed from a protoplanetary disk that collected in an asteroid belt or Oort cloud. Fluctuations in the density of radiation attracted ordinary matter together to eventually form stars, planets, and other objects. This explains how some structures stay together even though we cannot see them directly.ĭark matter has existed since the beginning of time. ![]() It’s found everywhere in the universe and it only interacts with ordinary matter through gravity. She also explains how dark matter is connected to life on Earth in a wide range of scientific findings.ĭark matter is a type of matter that can’t be seen, but its effects are known. Lisa Randall’s book Dark Matter and the Dinosaurs proposes that a meteoroid wiped out the dinosaurs. ![]()
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