Is our universe just one of many? The idea may sound a bit bizarre, but it could be a reality, scientists say.
A new study challenges the notion that the force of an exploding star forced the formation of the solar system. University of Chicago researchers Haolan Tang and Nicolas Dauphas found the radioactive isotope iron 60 — the telltale sign of an exploding star—low in abundance and well mixed in solar system material. As cosmochemists, they…
When human ancestors began scavenging for meat regularly on the open plains of Africa about 2.5 million years ago, they apparently took more than their fair share of flesh. Within a million years, most of the large carnivores in the region—from saber-toothed cats to bear-size otters—had gone extinct, leaving just a few “hypercarnivores” alive, according…
How much warning will we really have if a Near Earth Asteroid (NEO) is about to hit Earth? The answer is pretty grim. “With so many of even the larger NEOs remaining undiscovered, the most likely warning today would be zero,” NASA informs us. We would see nothing at all until suddenly, just as the…
Humans share over 90% of their DNA with their primate cousins. The expression or activity patterns of genes differ across species in ways that help explain each species’ distinct biology and behavior. DNA factors that contribute to the differences were described at the American Society of Human Genetics 2012 meeting in a presentation by Yoav…
Scientists at Cornell University hid an event for 40 trillionths of a second, according to a study appearing in Thursday’s edition of the journal Nature. We see events happening as light from them reaches our eyes. Usually it’s a continuous flow of light. In the new research, however, scientists were able to interrupt that flow…
The European Space Agency’s next big mission may be particularly juicy for scientists hunting for signs of extraterrestrial life. The Jupiter Icy Moons Explorer, or JUICE, spacecraft has been formally approved and is now slated to blast off for the gas giant planet in 2022, ESA officials announced. The space probe will tour three of…