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10 Sep 2020, 18:00 UTC
Science Release: New Hubble Data Suggests There is an Ingredient Missing from Current Dark Matter TheoriesNext Previous
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18 Aug 2020, 18:22 UTC Using a NASA-designed software program, members of the public helped identify a cache of brown dwarfs - sometimes called failed stars - lurking in our cosmic neighborhood. Next Previous
13 Aug 2020, 15:00 UTC Next Previous
12 Aug 2020, 15:00 UTC With the Atacama Large Millimeter / Submillimeter Array (ALMA), in which the European Southern Observatory (ESO) is involved, astronomers have discovered an extremely distant and therefore very young galaxy that looks surprisingly similar to our Milky Way. The galaxy is so far away that it took its light more than 12 billion years to reach us: we see it as it was when the universe was just 1.4 billion years old. It is also surprisingly less chaotic and contradicts the theories that all galaxies in the early universe were turbulent and unstable. This unexpected discovery challenges our understanding of how galaxies are formed and gives us new insights into the past of our universe. Next Previous
NASA's Goddard Space Flight Center 18 Sep 2020, 12:24 UTC The twisting patterns created by the multiple spiral arms of NGC 2835 create the illusion of an eye. This is a fitting description, as this magnificent galaxy resides near the head of the southern constellation of Hydra, the water snake. This stunning barred spiral galaxy, with a width of just over half that of the Milky Way, is brilliantly featured in this image taken by the NASA/ESA Hubble Space Telescope. Although it cannot be seen in this image, a supermassive black hole with a mass millions of times that of our Sun is known to nestle in the very center of NGC 2835.
Harvard-Smithsonian Center for Astrophysics 17 Sep 2020, 18:10 UTC Following extensive observations of stellar winds around cool evolved stars scientists have figured out how planetary nebulae get their mesmerizing shapes. The findings, published in Science, contradict common consensus, and show that not only are stellar winds aspherical, but they also share similarities with planetary nebulae.
ESA Top News 17 Sep 2020, 06:35 UTC This prototype 2.6-m diameter metal-mesh antenna reflector represents a big step forward for the European space sector: versions can be manufactured to reproduce any surface pattern that antenna designers wish, something that was previously possible only with traditional solid antennas.
Institute of Cosmology and Gravitation 16 Sep 2020, 13:09 UTC The most massive gravitational-wave source yet has been detected – a binary black hole merger, which produced a blast equal to the energy of eight Suns, sending shockwaves through the universe. Gravitational waves are produced when an extreme cosmic event occurs somewhere in the universe and, like dropping a rock in a pond, these events ripple across the cosmos, bending and stretching the fabric of space-time itself.
NASA's Goddard Space Flight Center 15 Sep 2020, 17:00 UTC Every morning, astronomer Steve Padilla takes a short walk from his home to the base of a tower that soars 150 feet above the ground. Tucked in the San Gabriel Mountains, about an hour’s drive north from Los Angeles, the Mount Wilson Observatory has long been a home for space science — it’s Padilla’s home too, one of the perks to his work as Mount Wilson’s Sun observer. Mount Wilson has several solar system sentinels; the telescope perched at the top of this tower keeps constant watch on the Sun. Observers study the Sun closely, so we can better understand the life and activity of our star.
Kavli Institute for the Physics and Mathematics of the Universe
An international research team analysis rules out dark matter destruction as origin of extra radiation in galaxy center14 Sep 2020, 00:00 UTC The detection more than a decade ago by the Fermi Gamma-ray Space Telescope of an excess of high-energy radiation in the center of the Milky Way convinced some physicists that they were seeing evidence of the annihilation of dark matter particles, but a team led by a researcher at the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) has ruled out that interpretation.
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Starts With a Bang! 18 Sep 2020, 14:01 UTC There are only 3 populations of stars, but “generations” is a more complex question.
Universe Today 18 Sep 2020, 09:51 UTC Can the galaxy’s dead stars help us in our search for life? A group of researchers from Cornell University thinks so. They say that watching exoplanets transit in front of white dwarfs can tell us a lot about those planets. It might even reveal signs of life.
astrobites 17 Sep 2020, 16:01 UTC There are lots of stars out there in the Universe, and a large chunk of those are M dwarfs. These are the smallest and reddest stars, coming last in the sequence of spectral types (O, B, A, F, G, K, and last but not least: M). Bonus: since they’re so small and dim, it actually makes it easier to find smaller, terrestrial planets around them! Given that they’re so plentiful and we have a good shot at peering into their habitable zones, it makes sense that we’d want to think about what life on a planet around a M dwarf would be like.
Universe Today 17 Sep 2020, 02:53 UTC The discovery of phosphine in the upper clouds in Venus’ atmosphere has generated a lot of excitement. On Earth, phosphine is produced biologically, so it’s a sign of life. If it’s not produced by life, it takes an enormous amount of energy to be created abiologically.
Sky and Telescope 16 Sep 2020, 13:12 UTC The detection of phosphine on Venus demands confirmation on two levels. Chemistry labs across the globe are already investigating possible inorganic production routes, to see if anything besides life could account for the molecule’s presence in the atmosphere. The observation itself also requires independent verification. But there are considerable challenges to detecting phosphine’s other chemical fingerprints here on Earth. The solution may come from space.
Nanowerk Space Exploration News 15 Sep 2020, 16:07 UTC More than 230 years ago astronomer William Herschel discovered the planet Uranus and two of its moons. Using the Herschel Space Observatory, a group of astronomers led by Örs H. Detre of the Max Planck Institute for Astronomy now has succeeded in determining physical properties of the five main moons of Uranus. The measured infrared radiation, which is generated by the Sun heating their surfaces, suggests that these moons resemble dwarf planets like Pluto.