Astronomy

Where does the Moon come from? From the earth. According to a new theory developed by Harvard researchers, our satellite was part of Earth itself until its mass was shot into space during a collision with another body. This explains why our planet and its satellite have such a similar chemical composition, the authors conclude in the journal Science.

If you don't think the Sun is shining enough on this planet, you can always move to PH1, a newly discovered exoplanet with four stars. It has been discovered by a team of amateur astronomers, in collaboration with experts from Yale University, who explain that it revolves around a binary star system that, in turn, is orbited by a second pair of distant stars, which gives rise to an "extremely rare" planetary configuration.

The European Southern Observatory (ESO) celebrates this month of October 50 years since the signing of its founding agreement. After half a century, ESO has become the most productive ground-based astronomical observatory in the world, operating three world-class observatories in Chile: La Silla, Paranal and Chajnantor.

An international team of researchers, with Spanish participation, has found the star closest to Sagittarius A *, the black hole with four million times the mass of the Sun located in the center of the Milky Way. It is the star S0-102, which takes only 11.5 years to complete its orbit around the black hole. The work will allow to know how the law of gravity operates in extreme environments.

The supernova or stellar explosion that occurred between April 30 and May 1 of the year 1006. Not in vain was it observed by different communities of scientists around the world, including Chinese astronomers who narrated that the astronomical event was visible for three years. The most explicit record, made by an Egyptian astronomer, indicates that the phenomenon was approximately three times brighter than Venus or that it emitted light in an amount equivalent to almost a quarter of the brightness of the Moon.

By combining the best images of galaxies taken in recent years by the Hubble telescope, NASA astronomers have created the deepest image of the universe obtained to date. Specifically, it combines 2,000 different photos taken during two million seconds, and contains 5,500 galaxies

An astronomical study reveals that one in five supernovae that explode in nearby galaxies go unnoticed in optical studies, a rate that increases to four out of five in the case of distant galaxies. The research, published in the journal The Astrophysical Journal and in which the Spanish Miguel Ángel Pérez-Torres, from the Instituto de Astrofísica de Andalucía (IAA-CSIC) participates, agrees with the star formation rate that astronomers handle and that had been discussed in previous works.

Simulating the space-time conditions of black hole systems in a supercomputer is one of the ways by which the scientific community could detect these regions of space of enormous density and that concentrate a large amount of mass inside, generating a gravitational field. such that no particle, not even light, can escape from them.