It is called Ganymede and it is one of the four main satellites of Jupiter. With a diameter of more than 5,000 kilometers, this immense moon is larger than some planets in the Solar System such as Mercury, reaching a diameter of 4879 kilometers. That is, if Ganymede orbited the sun it would be a planet and not a satellite.
It is one of the questions that the mission of ESA Planck tries to answer. At an international conference in Bologna, Italy, attended by astronomers from around the world, its leaders have unveiled the first carbon monoxide distribution map that covers the entire sky. Carbon monoxide is an ingredient in cold clouds in the Milky Way and other galaxies. These clouds, mainly made up of hydrogen molecules, constitute the reservoirs from which stars are born.
An international team of scientists has discovered a potentially habitable super-Earth orbiting a nearby star system. Its mass is 4.5 times greater than that of the Earth, and it makes one revolution every 28 Earth days in an orbit located in the habitable zone, that is, with temperatures neither too cold nor too hot for liquid water to exist, which allows life.
Why is the universe magnetized? This is a question that scientists have been asking for decades. Now an international team of researchers has found the answer, their findings published in the January 26 issue of the journal Nature.
The Frontiers of Knowledge award in Basic Sciences from the BBVA Foundation went to Michel Mayor and Didier Queloz. These two researchers discovered in 1995 a giant planet orbiting a star other than the Sun, which was a real revolution in astronomy. Today more than 500 exoplanets are known, but the pioneering and innovative nature of these two Swiss has led them to obtain the prestigious award.
For the first time, a comet has been portrayed at the precise moment when it disintegrated when it entered the solar atmosphere. It is about C / 2011 N3, one of the Kreutz family comets, known to get dangerously close to the Sun. In the last 15 years, scientists had detected about 2,000, but until now they had not managed to see one disintegrate upon reaching the star. .
In 1995, the image of the "Pillars of Creation" of the Eagle Nebula, obtained by the Hubble Space Telescope, became one of the iconic images of the 20th century. Two ESA space telescopes now provide new data on this enigmatic and beautiful star-forming region.
How to represent on a map something that we cannot see? This is the question astronomers ask themselves when studying the dark matter in the Universe. This matter does not emit light or enough electromagnetic radiation to be detected with our technical means, however we can know it through its effects on visible matter.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.
