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Categories: Paleontology: Dinosaurs, Space: Exploration
Published Study refutes claim that T. rex was three separate species
(via sciencedaily.com) A new study refutes a provocative claim made earlier this year that fossils classified as the dinosaur Tyrannosaurus rex represent three separate species. The rebuttal finds that the earlier proposal lacks sufficient evidence to split up the iconic species.
Published Explosive volcanic eruption produced rare mineral on Mars
(via sciencedaily.com) Planetary scientists have an answer to a mystery that's puzzled the Mars research community since NASA's Curiosity rover discovered a mineral called tridymite in Gale Crater in 2016.
Published Why Jupiter doesn't have rings like Saturn
(via sciencedaily.com) Because it's bigger, Jupiter ought to have larger, more spectacular rings than Saturn has. But new research shows Jupiter's massive moons prevent that vision from lighting up the night sky.
Published Global map of lunar hydrogen: Data confirms role water played in moon's formation
(via sciencedaily.com) Original source Using data collected over two decades ago, scientists have compiled the first complete map of hydrogen abundances on the Moon's surface. The map identifies two types of lunar materials containing enhanced hydrogen and corroborates previous ideas about lunar hydrogen and water, including findings that water likely played a role in the Moon's original magma-ocean formation and solidification.
Published Deep dive into the dusty Milky Way
(via sciencedaily.com) Original source An animated dive into the dusty Milky Way reveals the outlines of our galaxy taking shape as we look out further and further from Earth. Based on new data from an interactive tool that exploits data from the European Space Agency's Gaia mission and other space science data sets, astronomers have created an animation to model dust in the Milky Way.
Published Predicting equatorial plasma bubbles with SWARM
(via sciencedaily.com) Changes in atmospheric density after sunset can cause hot pockets of gas called 'plasma bubbles' to form over the Earth's equator, resulting in communication disruptions between satellites and the Earth. New AI models are now helping scientists to predict plasma bubble events and create a forecast.
Published What a Martian meteorite can teach us about Earth's origins
(via sciencedaily.com) What do Mars and Iceland have in common? These days, not so much. But more than 4.5 billion years ago, it's possible the Red Planet had a crust comparable to Iceland today. This discovery, hidden in the oldest martian fragments found on Earth, could provide information about our planet that was lost over billions of years of geological movement and could help explain why the Earth developed into a planet that sustains a broad diversity of life and Mars did not.
Published Space rocket junk could have deadly consequences unless governments act
(via sciencedaily.com) Original source The re-entry of abandoned stages of rockets left in orbit from space launches have a six to 10 per cent chance of severely injuring or killing a human being in the next decade, according to a new study. Researchers say governments need to take collective action and mandate that rocket stages are guided safely back to Earth after their use, which could increase the cost of a launch, but potentially save lives.
Published NASA Reveals Webb Telescope's first images of unseen universe
(via sciencedaily.com) NASA has revealed groundbreaking new views of the cosmos from the James Webb Space Telescope. The images include the deepest infrared view of our universe that has ever been taken.
Published President Biden reveals first image from NASA's Webb Telescope
(via sciencedaily.com) The first full-color image from NASA's James Webb Space Telescope reveals thousands of galaxies, including the faintest objects ever observed in the infrared.
Published A new giant dinosaur gives insight into why many prehistoric meat-eaters had such tiny arms
(via sciencedaily.com) An international team has discovered a new big, meat-eating dinosaur, dubbed Meraxes gigas, that provides clues about the evolution and anatomy of predatory dinosaurs such as the Carcharodontosaurus and Tyrannosaurus rex. Meraxes measured around 36 feet from snout to tail tip and weighed approximately 9,000 pounds.
Published Dinosaurs took over amid ice, not warmth, says a new study of ancient mass extinction
(via sciencedaily.com) There is new evidence that ancient high latitudes, to which early dinosaurs were largely relegated, regularly froze over, and that the creatures adapted -- an apparent key to their later dominance.
Published Floating in space might be fun, but study shows it's hard on earthly bodies
(via sciencedaily.com) Bone loss happens in humans -- as we age, get injured, or any scenario where we can't move the body, we lose bone. Understanding what happens to astronauts and how they recover is incredibly rare. It lets us look at the processes happening in the body in such a short time frame. We would have to follow someone for decades on Earth to see the same amount of bone loss.
Published Laser creates a miniature magnetosphere
(via sciencedaily.com) A research team realized magnetic reconnection driven by electron dynamics in laser-produced plasmas and measured the pure electron outflows. Their findings will be applied not only to space and astrophysical plasmas, but also to magnetic propulsion and fusion plasmas.
Published Asteroids: Researchers simulate defense of Earth
(via sciencedaily.com) NASA's Double Asteroid Redirection Test (DART) mission is the world's first full-scale planetary defense test against potential asteroid impacts on Earth. Researchers now show that instead of leaving behind a relatively small crater, the impact of the DART spacecraft on its target could leave the asteroid near unrecognizable.
Published Climate damage caused by growing space tourism needs urgent mitigation
(via sciencedaily.com) A formidable space tourism industry may have a greater climate effect than the aviation industry and undo repair to the protective ozone layer if left unregulated, according to a new study.
Published Gaia space telescope rocks the science of asteroids
(via sciencedaily.com) The European Gaia space mission has produced an unprecedented amount of new, improved, and detailed data for almost two billion objects in the Milky Way galaxy and the surrounding cosmos. The Gaia Data Release 3 on Monday revolutionizes our knowledge of the Solar System and the Milky Way and its satellite galaxies.
Published Gaia Data Release 3: 'Complete step change' in understanding of our Universe
(via sciencedaily.com) Space scientists have discovered a 'super Jupiter' orbiting a white dwarf, detected using direct observations with the European Space Agency (ESA)'s Gaia mission.
Published NASA telescope to help untangle galaxy growth, dark matter makeup
(via sciencedaily.com) NASA's Nancy Grace Roman Space Telescope will study wispy streams of stars that extend far beyond the apparent edges of many galaxies. Missions like the Hubble and James Webb space telescopes would have to patch together hundreds of small images to see these structures around nearby galaxies in full. Roman will do so in a single snapshot. Astronomers will use these observations to explore how galaxies grow and the nature of dark matter.
Published The tarantula's cosmic web: Astronomers map violent star formation in nebula outside our galaxy
(via sciencedaily.com) Astronomers have unveiled intricate details of the star-forming region 30 Doradus, also known as the Tarantula Nebula, using new observations from the Atacama Large Millimeter/submillimeter Array (ALMA). Now we can see the nebula in a new light, with wispy gas clouds that provide insight into how massive stars shape this region.