Scientists Ireland and France report major new finding about how matter behaves in the extreme near speed of light conditions of the Sun’s atmosphere using large radio telescopes and ultraviolet cameras on a NASA spacecraft to better understand plasma –the exotic but poorly understood “fourth state of matter”.
“Previously, all we had to go on to reconstruct seawater from the last Ice Age were indirect clues, like fossil corals and chemical signatures from sediments on the seafloor,” said Clara Blättler, an assistant professor of geophysical sciences at the University of Chicago, who led a study that announced the discovery of the first-ever direct remnants of seawater dating to the Ice Age, tucked inside rock formations in the middle of the Indian Ocean. “But from all indications, it looks pretty clear we now have an actual piece of this 20,000-year-old ocean.”
“While there have been many dwarf satellites falling onto the Milky Way over its life, this was the largest of them all,” said Sergey Koposov of Carnegie Mellon University, about the collision 10 billion years ago with the massive Gaia Sausage satellite galaxy, whose total mass in gas, stars and dark matter was more than 10 billion times the mass of our Sun, which lies in the center of this enormous cloud of stars.
Scientists have unearthed fossilized fungi in the remote Northwest Territories of the Canadian Arctic dating back to one billion years, in a discovery that could reshape our understanding of how life first arrived on land from the oceans.
“What’s exciting is that we’ll see very soon if I’m right or wrong,” said Christopher Kremer at Brown University about a strange mineral deposit near the Jezero Crater landing site for NASA’s Mars2020 rover. “So that’s a little nerve wracking,” but if it’s not a volcanic ashfall he adds, “it’s probably going to be something much stranger.”
Newly discovered layers of ice buried a mile beneath Mars’ north pole are the remnants of ancient polar ice sheets and could be one of the largest water reservoirs on the planet, according to scientists at The University of Texas at Austin and the University of Arizona, using measurements gathered by NASA’s Mars Reconnaissance Orbiter (MRO) and the Shallow Radar (SHARAD) that emits radar waves that can penetrate up to a mile and a half beneath the surface. If melted, the newly discovered polar ice would be equivalent to a global layer of water around Mars at least 1.5 meters (5 feet) deep.
“Our new algorithm helps to draw a more realistic picture of the exoplanet population in space,” says Michael Hippke of Germany’s Sonneberg Observatory about 18 previously undetected planets buried in data from the Kepler Space Telescope, one of which orbits its red dwarf star within the habitable zone. “This method constitutes a significant step forward, especially in the search for Earth-like planets.”
Scientists have confirmed the existence of “superionic ice,” a new phase of water that is black and hot first theoretically predicted more than 30 years ago. Although it has never been seen until now, scientists think the new state of matter, it might be among the most common forms of water in the universe. “It’s not quite a new phase of water. It’s really a new state of matter,” said physicist Livia Bove of France’s National Center for Scientific Research and Pierre and Marie Curie University. “Which is rather spectacular.”