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Astronomy/Space Science



Results 1 - 14 of 14.


Earth Sciences - Astronomy / Space Science - 30.11.2017
New early signals to quantify the magnitude of strong earthquakes
After an earthquake, there is a disturbance in the field of gravity almost instantaneously. This could be recorded before the seismic waves that seismologists usually analyze. In a study published in Science on December 1, 2017, a team formed of researchers from CNRS, IPGP, the Université Paris Diderot 1 and Caltech has managed to observe these weak signals related to gravity and to understand where they come from.

Astronomy / Space Science - Physics - 16.10.2017
Gravitational waves shed first light on mergers of neutron stars
This is a major breakthrough in more than one respect. The scientists of the LIGO-Virgo Collaboration (which includes the CNRS) have for the first time observed the gravitational waves emitted by the merger of two neutron stars, rather than of two black holes as in previous cases. In another first, the light emitted from the source of gravitational waves was observed in the following hours, days and weeks, by 70 other groundand space-based observatories.

Astronomy / Space Science - 13.10.2017
New developments in gravitational astronomy
Press conference (French only) Monday 16 October 2017 at 4 p.m. At the CNRS headquarters - 3 rue Michel-Ange – Paris 16e Researchers representing the LIGO-Virgo Collaboration, of which

Astronomy / Space Science - Physics - 27.09.2017
Gravitational waves : first joint LIGO-Virgo detection
Gravitational waves : first joint LIGO-Virgo detection
Scientists in the LIGO and Virgo collaborations have achieved the first ever three-detector observation of the gravitational waves emitted by the merger of two black holes.

Astronomy / Space Science - 25.09.2017
MATISSE to shed light on the formation of Earth and planets
The MATISSE instrument is ready to be sent to Chile, where in the next few weeks it will be installed on the Very Large Telescope (VLT), the world's most powerful astronomical observatory.

Physics - Astronomy / Space Science - 22.09.2017
Highest-energy cosmic rays have extragalactic origin
Highest-energy cosmic rays have extragalactic origin
A 50-year-old debate has at last been settled: the highest-energy cosmic rays do not originate in our own Galaxy but in galaxies located tens or even hundreds of millions of light years away.

Astronomy / Space Science - Chemistry - 04.09.2017
Does the organic material of comets predate our Solar System ?
Does the organic material of comets predate our Solar System ?
The Rosetta space probe discovered a large amount of organic material in the nucleus of comet “Chury.” In an article published by MNRAS on August 31, 2017, two French researchers advance the theory that this matter has its origin in interstellar space and predates the birth of the Solar System. The ESA's Rosetta mission, which ended in September 2016, found that organic matter made up 40% (by mass) of the nucleus of comet 67P Churyumov-Gerasimenko, a.k.a.

Astronomy / Space Science - Physics - 07.08.2017
The Sun's core makes a complete rotation in one week
The Sun’s core makes a complete rotation in one week
The rotation rate of the Sun's core has been accurately measured for the first time. The Sun, which has been remarkably stable for the past 4.6 billion years, is held together by the almost perfect equilibrium between the force of gravity, which tends to cause it to collapse, and the pressure of the thermonuclear reactions in its core.

Astronomy / Space Science - 06.07.2017
First discovery of an exoplanet by SPHERE
First discovery of an exoplanet by SPHERE
The astronomical instrument SPHERE, installed since 2014 on the Very Large Telescope (VLT) of the European Southern Observatory (ESO) in Chile, has made its first discovery of a planet around a star other than the Sun, known as an exoplanet. Only a handful of the 3,600 exoplanets detected since 1995 have been observed directly in this way.

Physics - Astronomy / Space Science - 17.05.2017
A new approach to forecasting solar flares?
A new approach to forecasting solar flares?
The emerging discipline of space meteorology aims to reliably predict solar flares so that we may better guard against their effects. Using 3D numerical models 1 , an international team headed by Etienne Pariat, a researcher at LESIA (Observatoire de Paris / CNRS / Université Paris Diderot / UPMC), has discovered a proxy that could be used to forecast an eruptive event.

Astronomy / Space Science - Earth Sciences - 22.02.2017
An exceptional system of exoplanets
An exceptional system of exoplanets
Seven temperate Earth-sized planets revolve around the star TRAPPIST-1. In addition, at least three of them harbor conditions compatible with the presence of liquid water on their surfaces.

Astronomy / Space Science - 22.02.2017
Surprising dunes on comet Chury
Surprising dunes on comet Chury
Surprising images from the Rosetta spacecraft show the presence of dune-like patterns on the surface of comet Chury. Researchers at the Laboratoire de Physique et Mécanique des Milieux Hétérogènes (CNRS/ESPCI Paris/UPMC/Université Paris Diderot) studied the available images and modeled the outgassing of vapor to try to explain the phenomenon.

Physics - Astronomy / Space Science - 26.01.2017
New black hole simulator may shed more light on contradiction in fundamental physics
A newly proposed experiment promises to create a 'tabletop' black hole that could prove whether information is truly lost when black holes evaporate. The idea that information could be lost this way has created a paradox in our current understanding of basic physics. 43 years ago, Stephen Hawking combined quantum field theory with Einstein's theory of general relativity and discovered black hole evaporation.

Astronomy / Space Science - 09.01.2017
Spontaneous
Spontaneous "dust traps": the missing link in planet formation discovered
Formation mechanism of spontaneous dust traps(red) in a protoplanetary disk after the formation of a spontaneous dust trap, visible as a bright dust ring. JF Gonzalez© One of the major questions in astronomy today is how do planets form? Until recently, no theory has been able to provide a complete answer.