Neanderthals were already on the verge of extinction in Europe by the time modern humans arrived on the scene, a study suggests. DNA analysis shows most Neanderthals in western Europe died out as early as 50,000 years ago – thousands of years before our own species appeared. A small group of Neanderthals then recolonised parts…
Our Milky Way galaxy may be teeming with rogue planets that ramble through space instead of being locked in orbit around a star, a new study suggests. These “nomad planets” could be surprisingly common in our bustling galaxy, according to researchers at the Kavli Institute for Particle Astrophysics and Cosmology. The study predicts that there…
Life may have gotten its start inland, inside ponds of volcanic condensate, not in the oceans. Modern life is more chemically compatible with conditions in venting geothermal fields, such as Yellowstone National Park, than in the ocean, even a primitive ocean, new analysis shows. The finding challenges a widely accepted theory that modern life began…
NASA has announced that astronomers using the Spitzer Space Telescope have found solid materials made out of Buckyballs in the star system XX Ophiuchi, which is 6,500 light years from Earth. This builds on some earlier findings, which detected Buckyballs in gaseous form in outer space. Buckyballs are probably one of the funnest molecules in…
If seismic activity on Mars is recent, and it can be traced to a volcano, it could mean that there is a source of heat to melt ice and provide potential habitats for simple forms of life.
After the furies of birth, the mature cosmos now evolves more slowly. Stars will continue to form for as long as another 100 trillion years (about 10,000 times the present age of the universe), which leaves plenty of time for slow-building cosmic phenomena to occur. Check out Scientific American’s cosmic timeline.
Back in the day of the first mammals, horses started out the size of house cats, weighing about 8 pounds and standing only a few inches tall. Then they got even littler, a direct result of the warm temperatures that characterized the Eocene era. Only when Earth cooled down a bit did the beasts get…
Scientists have measured the fastest winds yet observed from a stellar-mass black hole, shedding light on the behavior of these curious cosmic objects. The winds, clocked by astronomers using NASA’s Chandra X-ray Observatory, are racing through space at 20 million mph, or about 3 percent the speed of light. That’s nearly 10 times faster than…
After more than 30,000 years, and some care from Russian scientists, some ancient fruits have produced a delicate white flower. These regenerated plants, rising like wintry Phoenixes from the Russian ice, are still viable. They produce their own seeds and, after a 30,000-year hiatus, can continue their family line. The plant owes its miraculous resurrection…
In three stars far, far away, one of the rarest elements known to man has been spotted, improving our understanding about how heavy elements are created, bolstering evidence that a rare type of supernova may have been responsible for their creation. Tellurium — a brittle and toxic semiconducting metal — has for the first time…