Astronomy News

Courtesy of Science Daily

Welcome to Sea and Sky's Astronomy News. Here you can find links to the latest space news headlines on the topic of astronomy. Click on any yellow title below to view the full news article. The news article will open in a new browser window. Simply close the browser window when you are finished reading the article to return to the news article listing. You can use the "Click for More" link to go to a page with more news headlines.

 

Astronomy News -- ScienceDaily
Updated : Thu, 27 Apr 2017 23:48:12 EDT

Intergalactic gas and ripples in the cosmic web
A team of astronomers has made the first measurements of small-scale ripples in primeval hydrogen gas using rare double quasars.
Publ.Date : Thu, 27 Apr 2017 14:17:11 EDT

Cassini spacecraft dives between Saturn and its rings
NASA's Cassini spacecraft is back in contact with Earth after its successful first-ever dive through the narrow gap between the planet Saturn and its rings on April 26, 2017.
Publ.Date : Thu, 27 Apr 2017 09:29:14 EDT

Using math to investigate possibility of time travel
After some serious number crunching, a researcher says that he has come up with a mathematical model for a viable time machine: a Traversable Acausal Retrograde Domain in Space-time (TARDIS). He describes it as a bubble of space-time geometry which carries its contents backward and forwards through space and time as it tours a large circular path. The bubble moves through space-time at speeds greater than the speed of light at times, allowing it to move backward in time.
Publ.Date : Thu, 27 Apr 2017 09:17:17 EDT

Scientists propose mechanism to describe solar eruptions of all sizes
From long jets to massive explosions of solar material and energy, eruptions on the sun come in many shapes and sizes. Scientists now propose that a universal mechanism can explain the whole spectrum of solar eruptions.
Publ.Date : Wed, 26 Apr 2017 13:09:57 EDT

Cassini's first grand finale dive: Milestones
NASA's Cassini spacecraft is set to make its first dive through the narrow gap between Saturn and its rings on April 26, 2017.
Publ.Date : Wed, 26 Apr 2017 12:46:25 EDT

'Iceball' planet discovered through microlensing
Scientists have discovered a new planet with the mass of Earth, orbiting its star at the same distance that we orbit our sun. The planet is likely far too cold to be habitable for life as we know it, however, because its star is so faint. But the discovery adds to scientists' understanding of the types of planetary systems that exist beyond our own.
Publ.Date : Wed, 26 Apr 2017 12:24:37 EDT

'Ageless' silicon throughout Milky Way may indicate a well-mixed galaxy
New surveys of the element silicon may mean that the Milky Way is more efficient at mixing its contents than previously thought, thereby masking the telltale signs of chemical aging.
Publ.Date : Wed, 26 Apr 2017 11:31:37 EDT

Jupiter and the theory of relativity gets the blame for celestial bodies changing course
In the case of solar system bodies passing close to the sun, there are two important effects playing a crucial role in the orbital evolution. One of the effects is from the general relativity and the other effect is from Newtonian theory of gravitation.
Publ.Date : Wed, 26 Apr 2017 10:22:26 EDT

Cassini completes final -- and fateful -- Titan flyby: Dive to Saturn next
NASA's Cassini spacecraft has had its last close brush with Saturn's hazy moon Titan and is now beginning its final set of 22 orbits around the ringed planet.
Publ.Date : Tue, 25 Apr 2017 17:28:56 EDT

Lull in Mars' giant impact history
From the earliest days of our solar system's history, collisions between astronomical objects have shaped the planets and changed the course of their evolution. Studying the early bombardment history of Mars, scientists have discovered a 400-million-year lull in large impacts early in Martian history.
Publ.Date : Tue, 25 Apr 2017 10:25:26 EDT

NASA's Cassini, Voyager missions suggest new picture of Sun's interaction with galaxy
New data from three NASA missions show that the heliosphere -- the bubble of the Sun's magnetic influence that surrounds the inner solar system -- may be much more compact and rounded than previously thought.
Publ.Date : Mon, 24 Apr 2017 14:12:50 EDT

In experiments on Earth, testing possible building blocks of alien life
Extraterrestrial life, if it exists, could use different amino acid building blocks than living things here on Earth. To better understand what alien life might look like, researchers are studying which amino acids stand up to the types of extreme conditions found on other planets and moons.
Publ.Date : Mon, 24 Apr 2017 08:40:21 EDT

Hubble's cosmic bubbles
Hubble has revealed a few of the tenuous threads comprising Sh2-308, a faint and wispy shell of gas located 5,200 light-years away in Canis Major.
Publ.Date : Fri, 21 Apr 2017 11:32:54 EDT

Light rays from a supernova bent by the curvature of space-time around a galaxy
Astronomers have detected for the first time multiple images from a gravitationally lensed Type Ia supernova. The new observations suggest promising new avenues for the study of the accelerated expansion of the universe, gravity and distribution of dark matter in the universe.
Publ.Date : Thu, 20 Apr 2017 14:17:58 EDT

Can we see a singularity, the most extreme object in the universe?
Scientists have found new ways to detect a bare or naked singularity, the most extreme object in the universe. This finding has possible astrophysical implications.
Publ.Date : Thu, 20 Apr 2017 11:37:58 EDT

Hubble celebrates 27 years with two close friends
This stunning cosmic pairing of the two very different looking spiral galaxies NGC 4302 and NGC 4298 was imaged by the NASA/ESA Hubble Space Telescope. The image brilliantly captures their warm stellar glow and brown, mottled patterns of dust.
Publ.Date : Thu, 20 Apr 2017 11:37:50 EDT

Astronomers perform largest-ever survey of high-mass binary star systems
82 new high-mass binaries located in the Tarantula Nebula, also known as 30 Doradus, have been identified and characterized in the Large Magellanic Cloud, an international group of astronomers reports.
Publ.Date : Thu, 20 Apr 2017 09:02:48 EDT

Living with a star: NASA and partners survey space weather science
Storms from the sun can affect our power grids, railway systems and underground pipelines. Now scientists and engineers from NASA have assessed the state of science surrounding space weather.
Publ.Date : Thu, 20 Apr 2017 09:02:31 EDT

Newly discovered exoplanet may be best candidate in search for signs of life
An exoplanet orbiting a red dwarf star 40 light-years from Earth may be the new holder of the title 'best place to look for signs of life beyond the solar system.' Using ESO's HARPS instrument, and other telescopes, astronomers discovered a 'super-Earth' orbiting in the habitable zone around the star LHS 1140. This world is larger and more massive than the Earth and has likely retained most of its atmosphere. This makes it one of the most exciting targets for atmospheric studies.
Publ.Date : Wed, 19 Apr 2017 13:17:27 EDT

Supermassive black holes stifle galaxy growth
Supermassive black hole winds in a newly discovered class of galaxies are so energetic they suppress future star formation.
Publ.Date : Tue, 18 Apr 2017 11:53:45 EDT