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Latest News - #physics

A VLT telescope has made the most beautiful photo of "cosmic butterflies"

The very large telescope (VLT) the European southern Observatory (EO) in Chile received a new image of the gas of the nebula NGC 2899, symmetry, color, and complex internal structure resembling fluttering in the night sky multi-colored butterfly. This was reported on the official website EO.

This planetary nebula has never been photographed in such minute detail — even visible through translucent background star field its weak outer edges.

Astronomers have found a star cluster, our Galaxy is broken

Scientists have discovered a stellar stream consisting of the remnants of the ancient globular clusters are broken by the gravity of the milky Way two billion years ago. The study is published in the journal Nature.

A globular cluster is a sphere, consisting of hundreds of thousands and even millions of stars, bound by gravity and orbiting around the galactic nucleus. Our Galaxy has about 150 globular clusters. But the "field of stars", which was recently discovered by astronomers of the international consortium of S5 is very different from the usual and well-studied globular clusters in the milky Way.

Scientists have confirmed that before our Universe existed something

American scientists using mathematical tools described heterogeneity of relict cosmic radiation, which arose immediately after the birth of the Universe. The authors believe that their results confirm the correctness of the hypothesis of the Big bounce, according to which the emergence of our Universe was the result of the collapse of a "previous" universe. The results were published in the journal Physical Review Letters.

While the theory of General relativity explains a wide range of astrophysical and cosmological phenomena, some properties of the Universe remain a mystery. In particular, it cannot explain the uneven distribution in space of galaxies and dark matter.

Physics explained the Hubble constant and the age of the Universe

American and British physicists, using the known distance from the Earth to fifty galaxies, said the value of the Hubble constant used in calculations of the age of the Universe, which, in accordance with the new data, is 12.6 billion years. The study is published in the journal Astronomical Journal.

To date, the time of the Big Bang that spawned the Universe, scientists estimate, using computer simulation, which is based on the distance to the oldest stars, the behavior of galaxies and the expansion rate of the Universe. The idea is to calculate how much time it will take for all the objects returned to the initial state.

Traces of plutonium from the damaged Fukushima reactors have been found throughout Japan

Scientists from six countries using advanced analytical techniques found that the plutonium contained in nuclear fuel plant Fukushima-1, destroyed in March 2011, still contained in the environment in the composition of micro-particles ejected during an accident. The study is published in the journal Science of the Total Environment.

Environmentalists and chemists previously noted that the materials released into the atmosphere, soil and seawater after the accident, contained traces of plutonium, but its physical, chemical and isotopic forms remained unknown.

Astronomers first saw the spiral flows of matter around the star

Russian astronomers working with colleagues from other countries first discovered the spiral flow of the substance, the feeding of a massive star, as well as new molecules, creating the maser radiation. The results of observations published in the journal Nature Astronomy.

Massive stars — stars with mass greater than eight solar masses that end their lives with a supernova explosion, play a crucial role in the evolution of galaxies. For a long time scientists could not find an explanation of how the material that feeds these young stars, overcomes a huge radiation pressure.

Skoltech scientists said the formula for water

Russian scientists in cooperation with German colleagues have found that the water contains large amounts of short-lived ions. This radically changes the understanding of the dynamic water structure and approaches to the assessment of acidity. The study is published in the journal Scientific Reports.

Natural water is a composition of a mixture of isotopologues —combinations of different isotopes of oxygen and hydrogen, the two elements that make up water.

Scientists have reproduced the supernova explosion in the laboratory

Creating laboratory conditions of extremely strong magnetic field, scientists have shown that shock waves in it stretched in one direction. This explains the non-spherical shape of supernova remnants. The results were published in the Astrophysical journal.

When the life of a star ends in a supernova explosion, the shock waves from her spread in the environment at a distance of thousands of light years. With a uniform scattering power in all directions, the supernova remnants, in accordance with all the models must be spherically symmetric. However, observations show that most of them or axisymmetric barrel-shaped, i.e. elongated along a single axis and not a spherical.

Astronomers have discovered a new source of carbon in the Universe

Analysis of white dwarfs in the milky Way and other galaxies showed that stars of this class can be an important source of carbon — an element necessary for life. The study is published in the journal Nature Astronomy.

All the carbon atoms in the Universe were created by fusion of three helium atoms. But astrophysicists are still arguing, stars what are the primary carbon source.

Telescope VLT has registered the mysterious disappearance of a massive star

During observations on the Very Large telescope (VLT) the European southern Observatory (ESO) astronomers have discovered the loss of unstable massive stars in dwarf galaxy Kinman. Scientists suggest glitter star could fall sharply as it disappeared behind a cloud of dust. There is another explanation: star collapsed into a black hole without the formation of a supernova. The study is published in the journal Monthly Notices of the Royal Astronomical Society.

Between 2001 and 2011, different groups of astronomers studied a mysterious massive star located in the dwarf galaxy Kinman. Observations showed that the star is in a late stage of its evolution.

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