Make PDO Error: SQLSTATE[HY000] [1045] Access denied for user 'taadmin'@'localhost' (using password: YES) Teach Astronomy - News


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.
  • Scientists find evidence the early solar system harbored a gap between its inner and outer regions

    In the early solar system, a 'protoplanetary disk' of dust and gas rotated around the sun and eventually coalesced into the planets we know today. A new study suggests that a mysterious gap existed within this disk around 4.567 billion years ago, and likely shaped the composition of the solar system's infant planets.
  • The planet does not fall far from the star

    A compositional link between planets and their respective host star has long been assumed in astronomy. Scientists now deliver empirical evidence to support the assumption -- and partly contradict it at the same time.
  • Evidence of superionic ice provides new insights into unusual magnetic fields of Uranus and Neptune

    Not all ice is the same. The solid form of water comes in more than a dozen different - sometimes more, sometimes less crystalline - structures, depending on the conditions of pressure and temperature in the environment. Superionic ice is a special crystalline form, half solid, half liquid - and electrically conductive. Its existence has been predicted on the basis of various models and has already been observed on several occasions under - very extreme - laboratory conditions. New results provide another piece of the puzzle in the spectrum of the manifestations of water. And they may also help to explain the unusual magnetic fields of the planets Uranus and Neptune, which contain a lot of water.
  • Immense set of mysterious fast radio bursts

    An international team of astronomers recently observed more than 1,650 fast radio bursts (FRBs) detected from one source in deep space, which amounts to the largest set -- by far -- of the mysterious phenomena ever recorded. The source, dubbed FRB 121102, was observed using the Five-hundred-meter Aperture Spherical Telescope (FAST) in China, and represents more FRBs in one event than all previous reported occurrences combined.
  • Precise measurement of neutron lifetime

    Physicists have made the most precise measurement of the neutron's lifetime, which may help answer questions about the early universe.
  • How the Sun’s magnetic forces arrange gas particles

    Solar prominences hover above the visible solar disk like giant clouds, held there by a supporting framework of magnetic forces, originating from layers deep within the Sun. The magnetic lines of force are moved by ever-present gas currents -- and when the supporting framework moves, so does the prominence cloud. A research team has observed how magnetic forces lifted a prominence by 25,000 kilometers -- about two Earth diameters -- within ten minutes.
  • Did Venus ever have oceans?

    Astrophysicists have investigated the past of Venus to find out whether Earth's sister planet once had oceans.
  • Did a black hole eating a star generate a neutrino? Unlikely, new study shows

    New calculations show that a black hole slurping down a star may not have generated enough energy to launch a neutrino.
  • To watch a comet form, a spacecraft could tag along for a journey toward the sun

    A new article proposes that space probes could hitch a ride with 'centaurs' as they become comets. Along the way, the spacecraft would gather data that would otherwise be impossible to record -- including how comets, Earth-like planets, and even the solar system formed.
  • A 5-sigma standard model anomaly is possible

    One of the best chances for proving beyond-the-standard-model physics relies on something called the Cabibbo-Kobayashi-Maskawa (CKM) matrix. The standard model insists that the CKM matrix, which describes the mixing of quarks, should be unitary. But growing evidence suggests that during certain forms of radioactive decay, the unitarity of the CKM matrix might break.
  • Some of the biggest asteroids in our Solar System

    Astronomers have imaged 42 of the largest objects in the asteroid belt, located between Mars and Jupiter. The observations reveal a wide range of peculiar shapes, from spherical to dog-bone, and are helping astronomers trace the origins of the asteroids in our Solar System.
  • Professor uncovers surprising results from nuclear reactions inside stars

    Where do our elements come from? And how are they made? New research is flipping the script on those age-old nuclear astrophysics questions. The truth is out there -- several light years away among the stars, to be exact.
  • Challenging the Big Bang puzzle of heavy elements

    It has long been theorized that hydrogen, helium, and lithium were the only chemical elements in existence during the Big Bang, and that supernova explosions are responsible for transmuting these elements into heavier ones. Researchers are now challenging this and propose an alternative model for the formation of nitrogen, oxygen, and water based on the history of Earth's atmosphere. They postulate that the 25 elements with atomic numbers smaller than iron were created via an endothermic nuclear transmutation of two nuclei, carbon and oxygen.
  • Stellar 'fossils' in meteorites point to distant stars

    A new study analyzes a diverse set of presolar grains with the goal of realizing their true stellar origins.
  • Brain damage from long stays in space

    Spending a long time in space appears to cause brain damage. This is shown by a study of five Russian cosmonauts who had stayed on the International Space Station (ISS).
  • Strange radio waves emerge from the direction of the galactic center

    Astronomers have detected a very unusual variable radio signal from towards the heart of the Milky Way, which is now tantalizing scientists.
  • Radio signals from distant stars suggest hidden planets

    Using the world's most powerful radio antenna, scientists have discovered stars unexpectedly blasting out radio waves, possibly indicating the existence of hidden planets.
  • Ancient city could have been destroyed by cosmic airburst, evidence suggests

    Researchers have presented evidence that a Middle Bronze Age city called Tall el-Hammam, located in the Jordan Valley northeast of the Dead Sea, was destroyed by a cosmic airburst.
  • Rocks on floor of Jezero Crater, Mars, show signs of sustained interactions with water

    Since the Perseverance rover landed in Jezero crater on Mars in February, the rover and its team of scientists back on Earth have been hard at work exploring the floor of the crater that once held an ancient lake. Perseverance and the Mars 2020 mission are looking for signs of ancient life on Mars and preparing a returnable cache of samples for later analyses on Earth.
  • Chang'e-5 samples reveal key age of moon rocks

    A lunar probe launched by the Chinese space agency recently brought back the first fresh samples of rock and debris from the moon in more than 40 years. Now an international team of scientists has determined the age of these moon rocks at close to 1.97 billion years old.
  • Rover images confirm Jezero crater is an ancient Martian lake

    Images from the Perseverance rover confirm that Jezero crater is an ancient Martian lake, MIT researchers report. The team also detected signs of flash flooding strong enough to carry large boulders downstream into the ancient delta.
  • ALMA animation of circling twin young stars

    Researchers analyzed the accumulated data from the Atacama Large Millimeter/submillimeter Array (ALMA) and depicted the motion of a young twin star system XZ Tauri over three years. This 'ALMA Animation' of twin stars sheds new light on the origins of the binary stars and the planets to be formed around them.
  • Highly porous rocks responsible for Bennu's surprisingly craggy surface

    Using data from NASA OSIRIS-REx mission, scientists concluded that asteroids with highly porous rocks, such as Bennu, should lack fine-grained material on their surfaces.
  • Dwarf planet Vesta a window to the early solar system

    The dwarf planet Vesta is helping scientists better understand the earliest era in the formation of our solar system. Two recent articles use data from meteorites derived from Vesta to resolve the 'missing mantle problem' and push back our knowledge of the solar system to just a couple of million years after it began to form.
  • Process leading to supernova explosions and cosmic radio bursts unearthed

    A process important to black holes and supernovas has for the first time been demonstrated in a laboratory.