NEWS

SOURCE: SCIENCE DAILY
Here is an RSS feed from Science Daily’s Space and Time section to keep you up to date on current events in the space community.
  • Brief presence of water in Arabia Terra on Mars

    Scientists recently discovered that water was once present in a region of Mars called Arabia Terra.
  • Closest pair of supermassive black holes yet

    Astronomers have revealed the closest pair of supermassive black holes to Earth ever observed. The two objects also have a much smaller separation than any other previously spotted pair of supermassive black holes and will eventually merge into one giant black hole.
  • Largest comet ever observed was active at near-record distance

    Astronomers show that comet Bernardinelli-Bernstein (BB), the largest comet ever discovered, was active long before previously thought, meaning the ice within it is vaporizing and forming an envelope of dust and vapor known as a coma. Only one active comet has been observed farther from the sun, and it was much smaller than comet BB.
  • Strong winds power electric fields in the upper atmosphere

    Using observations from NASA's ICON mission, scientists presented the first direct measurements of Earth's long-theorized dynamo on the edge of space: a wind-driven electrical generator that spans the globe 60-plus miles above our heads. The dynamo churns in the ionosphere, the electrically charged boundary between Earth and space. It's powered by tidal winds in the upper atmosphere that are faster than most hurricanes and rise from the lower atmosphere, creating an electrical environment that can affect satellites and technology on Earth.
  • Sun is likely an unaccounted source of the Earth’s water

    Curtin University researchers have helped unravel the enduring mystery of the origins of the Earth's water, finding the Sun to be a surprising likely source.
  • In the quantum realm, not even time flows as you might expect

    A team of physicists has shown how quantum systems can simultaneously evolve along two opposite time arrows - both forward and backward in time. The study necessitates a rethink of how the flow of time is understood and represented in contexts where quantum laws play a crucial role.
  • Orbital harmony limits late arrival of water on TRAPPIST-1 planets

    Seven Earth-sized planets orbit the star TRAPPIST-1 in near-perfect harmony, and researchers have now used that harmony to determine how much physical abuse the planets could have withstood in their infancy.
  • Mars seismic deployment lays groundwork for future planetary missions

    About 1000 days after the Mars InSight mission deployed SEIS, the first seismometer on the red planet, researchers are analyzing new seismic data and reporting on instrument responses, using these data to plan for future planetary seismographs.
  • Astronomers discover ancient brown dwarf with lithium deposits intact

    Researchers have discovered lithium in the oldest and coldest brown dwarf where the presence of this valuable element has been confirmed so far. This substellar object, called Reid 1B, preserves intact the earliest known lithium deposit in our cosmic neighborhood, dating back to a time before the formation of the binary system to which it belongs.
  • Hubble witnesses shock wave of colliding gases in Running Man Nebula

    Mounded, luminous clouds of gas and dust glow in this Hubble image of a Herbig-Haro object known as HH 45. Herbig-Haro objects are a rarely seen type of nebula that occurs when hot gas ejected by a newborn star collides with the gas and dust around it at hundreds of miles per second, creating bright shock waves. In this image, blue indicates ionized oxygen (O II) and purple shows ionized magnesium (Mg II). Researchers were particularly interested in these elements because they can be used to identify shocks and ionization fronts. This object is located in the nebula NGC 1977, which itself is part of a complex of three nebulae called The Running Man. NGC 1977 -- like its companions NGC 1975 and NGC 1973 -- is a reflection nebula, which means that it doesn't emit light on its own, but reflects light from nearby stars, like a streetlight illuminating fog. Hubble observed this region to look for stellar jets and planet-forming disks around young stars, and examine how their environment affects the evolution of such disks.
  • One year on this giant, blistering hot planet is just 16 hours long

    Astronomers have discovered an ultrahot Jupiter with shortest orbit of any known gas giant planet.
  • Analysis of Mars’s wind-induced vibrations sheds light on the planet’s subsurface properties

    NASA's Mars mission InSight probes the geology of the Elysium Planitia, finding alternate layers of basalt and sediments. An international team of scientists compares on-the-ground data with data from models, which helps to understand, e.g., the surface's load-bearing capacity and trafficability.
  • Scientist reveals cause of lost magnetism at meteorite site

    A scientist has discovered a method for detecting and better defining meteorite impact sites that have long lost their tell-tale craters. The discovery could further the study of not only Earth's geology but also that of other bodies in our solar system.
  • One in five galaxies in the early universe could still be hidden behind cosmic dust

    Astronomers have discovered two previously invisible galaxies billions of light-years away. Their discovery suggests that up to one in five such distant galaxies remain hidden from our telescopes, camouflaged by cosmic dust. The new knowledge changes perceptions of our universe's evolution since the Big Bang.
  • High-speed propeller star is fastest spinning white dwarf

    A white dwarf star that completes a full rotation once every 25 seconds is the fastest spinning confirmed white dwarf, according to a team of astronomers.
  • Scientists create insights into perhaps the most extreme state of matter produced on Earth

    Exotic laser-produced high-energy-density (HED) plasmas akin to those found in stars and nuclear explosions could provide insight into events throughout the universe. Physicists have discovered a new way to measure and understand these plasmas, among the most extreme states of matter ever produced on Earth. Improved understanding could provide benefits ranging from fine-tuning the high-density plasmas in inertial confinement fusion experiments to better understanding of processes throughout the universe.
  • Alien organisms – hitchhikers of the galaxy?

    Scientists warn, without good biosecurity measures 'alien organisms' on Earth may become a reality stranger than fiction. Scientists are calling for greater recognition of the biosecurity risks ahead of the space industry.
  • Life on Mars search could be misled by false fossils, study says

    Mars explorers searching for signs of ancient life could be fooled by fossil-like specimens created by chemical processes, research suggests.
  • Astronomers team up to create new method to understand galaxy evolution

    A husband-and-wife team of astronomers joined forces for the first time in their scientific careers during the pandemic to develop a new method to look back in time and change the way we understand the history of galaxies.
  • Carbon dioxide cold traps on the moon are confirmed for the first time

    After decades of uncertainty, researchers have confirmed the existence of lunar carbon dioxide cold traps that could potentially contain solid carbon dioxide. The discovery will likely have a major influence in shaping future lunar missions and could impact the feasibility of a sustained robot or human presence on the moon.
  • Where does gold come from? New insights into element synthesis in the universe

    How are chemical elements produced in our Universe? Where do heavy elements like gold and uranium come from? Using computer simulations, a research team shows that the synthesis of heavy elements is typical for certain black holes with orbiting matter accumulations, so-called accretion disks. The predicted abundance of the formed elements provides insight into which heavy elements need to be studied in future laboratories to unravel the origin of heavy elements.
  • Hubble tension: Showing the cracks in Gaussian Processes

    A new analysis of the Hubble constant to show that the Gaussian Processes data reconstruction technique may not actually be independent of all cosmological models -- and that it may be time to question the validity of model independence itself.
  • Simulations provide clue to missing planets mystery

    New supercomputer simulations show that after creating a ring, a planet can move away and leave the ring behind. Not only does this bolster the planet theory for ring formation, the simulations show that a migrating planet can produce a variety of patterns matching those actually observed in disks.
  • Near-earth asteroid might be a lost fragment of the moon

    Near-Earth asteroid Kamo`oalewa could be a fragment of our moon.
  • Black hole found hiding in star cluster outside our galaxy

    Astronomers have discovered a small black hole outside the Milky Way by looking at how it influences the motion of a star in its close vicinity. This is the first time this detection method has been used to reveal the presence of a black hole outside of our galaxy. The method could be key to unveiling hidden black holes in the Milky Way and nearby galaxies, and to help shed light on how these mysterious objects form and evolve.