astrophysics

astrophysics

astrophysics

Reaction: IceCube detects for the first time the emission of high-energy neutrinos from inside the Milky Way galaxy

The IceCube neutrino observatory, built deep under Antarctic ice, has detected the emission of high-energy neutrinos from within the Milky Way. According to the research, published in the journal Science, this is the first time scientists have obtained solid evidence for the emission of these particles within our galaxy, as they had previously identified high-energy neutrino emission from extragalactic sources.

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Reactions: evidence found of a cosmic background of gravitational waves possibly produced by supermassive black hole collisions

The International Pulsar Timing Array (IPTA) consortium has discovered evidence for the existence of a cosmic background of gravitational waves. The results, published by different IPTA consortia in several scientific journals, would show that this cosmic background would be the result of collisions of supermassive black holes. In 2015, researchers from the LIGO and Virgo collaborations made the first direct observation of gravitational waves caused by the collision of two stellar-mass black holes. These waves oscillate several times per second. What the consortia have now found are gravitational waves emitted by supermassive binary black holes at the centre of galaxies, waves that oscillate on timescales of many years.

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Back to the Moon!

After almost three months of delays caused by various technical problems and two hurricanes, the Artemis I mission was successfully launched this morning, the first of a programme that will take the first woman astronaut to the moon. It has 42 days ahead of it, during which the spacecraft will orbit our satellite and test the stability of this lunar orbit, because in the future a space station will be located there to receive the astronauts on their journey from Earth.

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Reactions to experiment using neutrinos to understand quantum gravity

The IceCube collaboration, with its detector located under the Antarctic ice sheet, has used astrophysical neutrinos to search for changes in the structure of space-time. In the research, published in Nature Physics, the team analysed more than seven years of data and found no signs of a modified structure of space-time imprinted in the characteristics of these particles, a further step towards understanding quantum gravity. 
 

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Reactions to the first controlled asteroid impact

As planned, the DART (Double Asteroid Redirect Test) mission has hit the asteroid Dimorphos, which orbits a larger asteroid, Didymos. Neither is a threat to Earth. This is the first planetary defence test mission designed to change the orbit of an asteroid, launched by NASA and the Johns Hopkins APL laboratory, with Spanish participation. Scientific teams will study with ground-based telescopes how much the orbit of Dimorphos will change around Didymos after the collision.

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Reaction to possible first direct observation of a magnetic switchback from the Sun

The ESA/NASA Solar Orbiter mission may have made the first direct observation of what are known as magnetic switchbacks on the Sun. The phenomenon, which consists of S-shaped disturbances that cause sudden reversals of its magnetic field, had been identified by different space probes since the 1970s, but its explanation had only been described theoretically. The finding is published in The Astrophysical Journal Letters.

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The deepest image of the distant universe, proof that James Webb will entertain for years to come

Romano Corradi, director of the Gran Telescopio de Canarias, assesses the deepest and sharpest infrared image of the distant universe taken by the James Webb Space Telescope, an international collaboration of the space agencies of the United States (NASA), Europe (ESA) and Canada (CSA).

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