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|Astronomy News -- ScienceDaily|
Updated : Mon, 10 Dec 2018 17:37:41 EST
Solar activity research provides insight into sun's past, future
Scientists have developed a new technique for looking at historic solar data to distinguish trustworthy observations from those that should be used with care. This work is critical to understanding the sun's past and future as well as whether solar activity plays a role in climate change.
Publ.Date : Mon, 10 Dec 2018 11:58:24 EST
Evidence for carbon-rich surface on Ceres
Astronomers have concluded that the surface of dwarf planet Ceres is rich in organic matter. Data from NASA's Dawn spacecraft indicate that Ceres's surface may contain several times the concentration of carbon than is present in the most carbon-rich, primitive meteorites found on Earth.
Publ.Date : Mon, 10 Dec 2018 11:58:21 EST
NASA's Voyager 2 probe enters interstellar space
For the second time in history, a human-made object has reached the space between the stars. NASA's Voyager 2 probe now has exited the heliosphere -- the protective bubble of particles and magnetic fields created by the Sun.
Publ.Date : Mon, 10 Dec 2018 11:38:20 EST
NASA InSight lander 'hears' Martian winds
NASA's Interior Exploration using Seismic Investigations, Geodesy and Heat Transport InSight lander, which touched down on Mars just 10 days ago, has provided the first ever "sounds" of Martian winds on the Red Planet.
Publ.Date : Fri, 07 Dec 2018 16:49:27 EST
NASA's Mars InSight flexes its arm
New images from NASA's Mars InSight lander show its robotic arm is ready to do some lifting. With a reach of nearly 6 feet (2 meters), the arm will be used to pick up science instruments from the lander's deck, gently setting them on the Martian surface at Elysium Planitia, the lava plain where InSight touched down on Nov. 26.
Publ.Date : Fri, 07 Dec 2018 16:47:28 EST
Planetary defense: The Bennu experiment
On Dec. 3, after traveling billions of kilometers from Earth, NASA's OSIRIS-REx spacecraft reached its target, Bennu, and kicked off a nearly two-year, up-close investigation of the asteroid. It will inspect nearly every square inch of this ancient clump of rubble left over from the formation of our solar system. Ultimately, the spacecraft will pick up a sample of pebbles and dust from Bennu's surface and deliver it to Earth in 2023.
Publ.Date : Fri, 07 Dec 2018 16:45:35 EST
Unknown treasure trove of planets found hiding in dust
The first unbiased survey of protoplanetary disks surrounding young stars in the Taurus star-forming region turned up a higher-than-expected number of disks with features suggesting nascent planets, according to a new study.
Publ.Date : Fri, 07 Dec 2018 11:27:17 EST
An exoplanet inflated like a balloon
Although helium is a rare element on Earth, it is ubiquitous in the universe. It is, after hydrogen, the main component of stars and gaseous giant planets. Despite its abundance, helium was only detected recently in the atmosphere of a gaseous giant by an international team. The team has observed for the first time how this gas escapes from the overheated atmosphere of an exoplanet, literally inflated with helium.
Publ.Date : Thu, 06 Dec 2018 14:12:04 EST
Mice display altered immune system following spaceflight
Based on examinations of mice that had been on board the Bion-M1 biosatellite, new research demonstrates that the outer space environment impairs the production of B lymphocytes, the white blood cells responsible for antibody production. The study also shows that such adverse effects persist at least one week after returning to Earth.
Publ.Date : Thu, 06 Dec 2018 14:11:15 EST
Mantle neon illuminates Earth's formation
The Earth formed relatively quickly from the cloud of dust and gas around the Sun, trapping water and gases in the planet's mantle, based on neon isotopes from the depths of the Earth and deep space. Apart from settling Earth's origins, the work could help in identifying extrasolar systems that could support habitable planets.
Publ.Date : Wed, 05 Dec 2018 13:41:20 EST
Bringing balance to the universe: New theory could explain missing 95 percent of the cosmos
New research could shed light on the 'missing' dark matter and dark energy that make up 95 percent of our universe and yet are wholly invisible to us.
Publ.Date : Wed, 05 Dec 2018 09:37:16 EST
NASA's OSIRIS-REx spacecraft arrives at asteroid Bennu
NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft completed its 1.2 billion-mile (2 billion-kilometer) journey to arrive at the asteroid Bennu Monday. The spacecraft executed a maneuver that transitioned it from flying toward Bennu to operating around the asteroid.
Publ.Date : Tue, 04 Dec 2018 09:09:06 EST
LIGO and Virgo announce four new gravitational-wave detections
The LIGO and Virgo collaborations have now confidently detected gravitational waves from a total of 10 stellar-mass binary black hole mergers and one merger of neutron stars, which are the dense, spherical remains of stellar explosions. Six of the black hole merger events had been reported before, while four are newly announced.
Publ.Date : Mon, 03 Dec 2018 11:16:17 EST
Combination of space-based and ground-based telescopes reveals more than 100 exoplanets
Astronomers using a combination of ground and space based telescopes have reported more than 100 extrasolar planets (exoplanets) in only three months. These planets are quite diverse and expected to play a large role in developing the research field of exoplanets and life in the Universe.
Publ.Date : Mon, 03 Dec 2018 11:16:12 EST
Mars new home 'a large sandbox'
With InSight safely on the surface of Mars, the mission team at NASA's Jet Propulsion Laboratory in Pasadena, California, is busy learning more about the spacecraft's landing site. They knew when InSight landed on Nov. 26 that the spacecraft had touched down on target, a lava plain named Elysium Planitia. Now they've determined that the vehicle sits slightly tilted (about 4 degrees) in a shallow dust- and sand-filled impact crater known as a "hollow." InSight has been engineered to operate on a surface with an inclination up to 15 degrees.
Publ.Date : Fri, 30 Nov 2018 11:11:11 EST
Black hole 'donuts' are actually 'fountains'
Based on computer simulations and new observations from the Atacama Large Millimeter/submillimeter Array (ALMA), researchers have found that the rings of gas surrounding active supermassive black holes are not simple donut shapes. Instead, gas expelled from the center interacts with infalling gas to create a dynamic circulation pattern, similar to a water fountain in a city park.
Publ.Date : Fri, 30 Nov 2018 09:43:15 EST
Newly discovered supernova complicates origin story theories
A supernova discovered by an international group of astronomers provides an unprecedented look at the first moments of a violent stellar explosion. The light from the explosion's first hours showed an unexpected pattern, which astronomers analyzed to reveal that the genesis of these phenomena is even more mysterious than previously thought.
Publ.Date : Fri, 30 Nov 2018 09:01:54 EST
All of the starlight ever produced by the observable universe measured
From their laboratories on a rocky planet dwarfed by the vastness of space, scientists have collaborated to measure all of the starlight ever produced throughout the history of the observable universe.
Publ.Date : Thu, 29 Nov 2018 14:24:14 EST
Hubble uncovers thousands of globular star clusters scattered among galaxies
Astronomers using Hubble found a whopping 22,426 globular star clusters in a nearby neighborhood of galaxies.
Publ.Date : Thu, 29 Nov 2018 11:41:19 EST
Gas clouds whirling around black hole form heart of distant astronomical object
Astronomers have concluded that gas clouds rapidly moving around a central black hole form the very heart of the 3C 327 quasar, confirming earlier measurements.
Publ.Date : Thu, 29 Nov 2018 11:01:47 EST