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|Astronomy News -- ScienceDaily|
Updated : Fri, 20 Jul 2018 00:37:41 EDT
Traveling to the sun: Why won't Parker Solar Probe melt?
This summer, NASA's Parker Solar Probe will launch to travel closer to the Sun, deeper into the solar atmosphere, than any mission before it. Cutting-edge technology and engineering will help it beat the heat.
Publ.Date : Thu, 19 Jul 2018 16:50:26 EDT
CALET succeeds in direct measurements of cosmic-ray electron spectrum up to 4.8 TeV
Researchers have succeeded in the direct, high-precision measurements of cosmic-ray electron spectrum up to 4.8 TeV, based on observations with the Calorimetric Electron Telescope (CALET). Observations by CALET are expected to reveal the mysteries of cosmic-rays and nature of dark matter in the future.
Publ.Date : Thu, 19 Jul 2018 09:44:22 EDT
NASA's new mini satellite will study Milky Way's halo
A new mission called HaloSat will help scientists search for the universe's missing matter by studying X-rays from hot gas surrounding the Milky Way galaxy.
Publ.Date : Wed, 18 Jul 2018 17:03:15 EDT
Solar corona is more structured, dynamic than previously thought
Scientists have discovered never-before-detected, fine-grained structures in the Sun's outer atmosphere, or corona. The team imaged this critical region in detail using sophisticated software techniques and longer exposures from the COR-2 camera on board NASA's Solar and Terrestrial Relations Observatory-A (STEREO-A).
Publ.Date : Wed, 18 Jul 2018 12:48:11 EDT
X-ray data may be first evidence of a star devouring a planet
An analysis of X-ray data suggests the first observations of a star swallowing a planet, and may also explain the star's mysterious dimming.
Publ.Date : Wed, 18 Jul 2018 11:33:32 EDT
Planck: Final data from the mission lends support to the standard cosmological model
With its increased reliability and its data on the polarization of relic radiation, the Planck mission corroborates the standard cosmological model with unrivaled precision for these parameters, even if some anomalies still remain.
Publ.Date : Wed, 18 Jul 2018 10:47:57 EDT
Finding a planet with a 10 year orbit in just a few months
To discover the presence of a planet around stars, astronomers wait until it has completed three orbits. However, this effective technique has its drawbacks since it cannot confirm the presence of planets at relatively long periods. To overcome this obstacle, astronomers have developed a method that makes it possible to ensure the presence of a planet in a few months, even if it takes 10 years to circle its star.
Publ.Date : Wed, 18 Jul 2018 09:25:07 EDT
Supersharp images from new VLT adaptive optics
ESO's Very Large Telescope (VLT) has achieved first light with a new adaptive optics mode called laser tomography -- and has captured remarkably sharp test images of the planet Neptune and other objects. The MUSE instrument working with the GALACSI adaptive optics module, can now use this new technique to correct for turbulence at different altitudes in the atmosphere. It is now possible to capture images from the ground at visible wavelengths that are sharper than those from the NASA/ESA Hubble Space Telescope.
Publ.Date : Wed, 18 Jul 2018 08:22:20 EDT
A dozen new moons of Jupiter discovered, including one 'oddball'
Twelve new moons orbiting Jupiter have been found -- 11 'normal' outer moons, and one that they're calling an 'oddball.' Astronomers first spotted the moons in the spring of 2017 while they were looking for very distant solar system objects as part of the hunt for a possible massive planet far beyond Pluto.
Publ.Date : Tue, 17 Jul 2018 10:12:56 EDT
Astronomers find a famous exoplanet's doppelganger
A new planet has been imaged, and it appears nearly identical to one of the best studied gas-giant planets. But this doppelganger differs in one very important way: Its origin. One object has long been known: the 13-Jupiter-mass planet beta Pictoris b, one of the first planets discovered by direct imaging, back in 2009. The new object, dubbed 2MASS 0249 c, has the same mass, brightness, and spectrum as beta Pictoris b.
Publ.Date : Tue, 17 Jul 2018 09:48:07 EDT
Disruption tolerant networking to demonstrate Internet in space
The interplanetary Internet may soon become a reality. NASA is about to demonstrate Delay/Disruption Tolerant Networking, or DTN -- a technology that sends information through space and ground networks to its destination.
Publ.Date : Mon, 16 Jul 2018 11:45:26 EDT
How might dark matter interact with ordinary matter?
Scientists have imposed conditions on how dark matter may interact with ordinary matter. In the search for direct detection of dark matter, the experimental focus has been on WIMPs, or weakly interacting massive particles, the hypothetical particles thought to make up dark matter. But the research team invokes a different theory to challenge the WIMP paradigm: the self-interacting dark matter model, or SIDM.
Publ.Date : Fri, 13 Jul 2018 09:35:45 EDT
VERITAS supplies critical piece to neutrino discovery puzzle
The VERITAS array has confirmed the detection of gamma rays from the vicinity of a supermassive black hole. While these detections are relatively common for VERITAS, this black hole is potentially the first known astrophysical source of high-energy cosmic neutrinos, a type of ghostly subatomic particle.
Publ.Date : Thu, 12 Jul 2018 11:45:44 EDT
Breakthrough in the search for cosmic particle accelerators
In a global observation campaign, scientist have for the first time located a source of high-energy cosmic neutrinos, ghostly elementary particles that travel billions of light years through the universe, flying unaffected through stars, planets and entire galaxies.
Publ.Date : Thu, 12 Jul 2018 11:45:25 EDT
Hubble and Gaia team up to fuel cosmic conundrum
Using the power and synergy of two space telescopes, astronomers have made the most precise measurement to date of the universe's expansion rate.
Publ.Date : Thu, 12 Jul 2018 11:44:48 EDT
Could gravitational waves reveal how fast our universe is expanding?
An new study finds black holes and neutron stars are key to measuring our expanding universe.
Publ.Date : Thu, 12 Jul 2018 11:44:34 EDT
Centenary of cosmological constant lambda
Physicists are now celebrating the 100th anniversary of the cosmological constant. On this occasion, two recent articles highlight its role in modern physics and cosmology. Before becoming widely accepted, the cosmological constant had to undergo many discussions about its necessity, its value and its physical essence. Today, there are still unresolved problems in understanding the deep physical nature of the phenomena associated with the cosmological constant.
Publ.Date : Wed, 11 Jul 2018 10:57:07 EDT
Colorful celestial landscape
New observations show the star cluster RCW 38 in all its glory. This image was taken during testing of the HAWK-I camera with the GRAAL adaptive optics system. It shows RCW 38 and its surrounding clouds of brightly glowing gas in exquisite detail, with dark tendrils of dust threading through the bright core of this young gathering of stars.
Publ.Date : Wed, 11 Jul 2018 09:31:37 EDT
Rocky planet neighbor looks familiar, but is not Earth's twin
Last autumn, the world was excited by the discovery of an exoplanet called Ross 128 b, which is just 11 light years away from Earth. New work has for the first time determined detailed chemical abundances of the planet's host star, Ross 128.
Publ.Date : Tue, 10 Jul 2018 12:28:24 EDT
Plasma-spewing quasar shines light on universe's youth, early galaxy formation
Astronomers found a quasar with the brightest radio emission ever observed in the early universe, due to it spewing out a jet of extremely fast-moving material. Scientists have revealed in unprecedented detail the jet shooting out of a quasar that formed within the universe's first billion years of existence.
Publ.Date : Mon, 09 Jul 2018 10:11:47 EDT