Showing 20 articles starting at article 781

< Previous 20 articles        Next 20 articles >

Categories: Geoscience: Volcanoes, Space: Structures and Features

Return to the site home page

     (via sciencedaily.com) 

Astrophysicists report how, when tiny galaxies collide with bigger ones, the bigger galaxies can strip the smaller galaxies of their dark matter -- matter that we can't see directly, but which astrophysicists think must exist because, without its gravitational effects, they couldn't explain things like the motions of a galaxy's stars.

     (via sciencedaily.com) 

In conflict with the current prevailing theory used to describe the universe, a new study suggests the existence of a direct interaction between the elementary particles that make up the dark matter halo and those that make up ordinary matter.

     (via sciencedaily.com) 

The moment that debris from destroyed planets impacts the surface of a white dwarf star has been observed. Astronomers saw X-rays from planetary debris heated to a million degrees as it fell onto the dead core of its host star.

     (via sciencedaily.com) 

The presence of pink pumice in the giant pumice raft of the 2012 Havre that drifted across the southwest Pacific Ocean has led researchers to recognize the immense power of underwater volcanic eruptions.

     (via sciencedaily.com) 

The Standard Model of Cosmology describes how the universe came into being according to the view of most physicists. Researchers have now studied the evolution of galaxies within this model, finding considerable discrepancies with actual observations.

     (via sciencedaily.com) 

Astronomers have found a new and original method for measuring the cosmic microwave background's temperature when the Universe was still in its infancy. They confirm in their new study the early cooling of our Universe shortly after the Big Bang and open up new perspectives on the elusive dark energy.

     (via sciencedaily.com) 

When building sensor networks, it can be extremely challenging for researchers to determine how the sensors should be arranged to obtain optimal results. New research proposes a new way to quantify the quality of sensor networks, and uses this method to suggest improvements to existing Dark Matter experiments.

     (via sciencedaily.com) 

Astronomers have presented a new explanation for the mysterious downward-moving dark voids seen in some solar flares.

     (via sciencedaily.com) 

Located near Naples, Italy, Vesuvius last had a violent eruption in 1944, towards the end of the Second World War. It could be a few hundred years before another dangerous, explosive eruption occurs, suggests a new study by volcano experts.

     (via sciencedaily.com) 

An international team of researchers has published comprehensive data on the search for dark matter using a worldwide network of optical magnetometers. According to the scientists, dark matter fields should produce a characteristic signal pattern that can be detected  by correlated measurements at multiple stations of the GNOME network.

     (via sciencedaily.com) 

Magma transports carbon dioxide stored in the Earth's mantle to volcanoes, where it is released into the atmosphere. A research team now presents results obtained using a new methodology to clarify the contribution of volcanoes to natural CO2 emissions.

     (via sciencedaily.com) 

A study discusses how advances in global lightning detection have provided novel ways to characterize explosive volcanism.

     (via sciencedaily.com) 

The dramatic collapse of Indonesia's Anak Krakatau volcano in December 2018 resulted from long-term destabilising processes, and was not triggered by any distinct changes in the magmatic system that could have been detected by current monitoring techniques, new research has found.

     (via sciencedaily.com) 

Using observations of Centaurus A, a nearby elliptical galaxy, obtained with the Gaia space telescope and ground-based instruments under the PISCeS survey, a team of astronomers presents an unprecedented number of globular cluster candidates in the outer regions of the galaxy. The findings provide astronomers with an even more detailed picture of galactic architecture and history of collisions and mergers.

     (via sciencedaily.com) 

Astronomers are one step closer to revealing the properties of dark matter enveloping our Milky Way galaxy, thanks to a new map of twelve streams of stars orbiting within our galactic halo.

     (via sciencedaily.com) 

Astrophysicists suggest that primordial black holes account for all dark matter in the universe.

     (via sciencedaily.com) 

Unlike our Sun, most stars live with a companion. Sometimes, two come so close that one engulfs the other -- with far-reaching consequences. When astronomers used the telescope Alma to study 15 unusual stars, they were surprised to find that they all recently underwent this phase. The discovery promises new insight on the sky's most dramatic phenomena -- and on life, death and rebirth among the stars.

     (via sciencedaily.com) 

A cosmic object originally classified as a gas and dust cloud actually consists of three stars and could resolve a controversy among astronomers.

     (via sciencedaily.com) 

A new concept has been developed that has the potential to assist new instruments in the investigation of fundamental science topics such as gravitational waves and dark matter.

     (via sciencedaily.com) 

Astronomers have found no trace of dark matter in the galaxy AGC 114905, despite taking detailed measurements over a course of forty hours with state-of-the-art telescopes.