Physicists use two types of measurements to calculate the expansion rate of the universe, but their results do not coincide, which may make it necessary to touch up the cosmological model. “It's like trying to thread a cosmic needle,” explains researcher Licia Verde of the University of Barcelona, co-author of an article on the implications of this problem.
The 1,554 inhabitants of Fresnedillas de la Oliva (Spain) are making preparations to celebrate the 50th anniversary of the arrival on the Moon. It was in this small village where the expected Apollo XI landing signal was received through the antenna that NASA installed on their land. That changed the lives of its inhabitants, who now remember how they cooperated in that great step for mankind.
The scientific collaborations LIGO and Virgo have detected gravitational waves from the fusion of two black holes, inaugurating a new era in the study of the cosmos. But what if those ripples of space-time had not produced by black holes, but by other exotic objects? A team of European physicists offer an alternative: wormholes, which can be traversed to appear in another universe.
A well-known experiment with young people bouncing a ball showed that when an observer focuses on counting the passes, he does not detect if someone crosses the stage disguised as a gorilla. According to researchers at the University of Cádiz (Spain), something similar could be happening to us when we try to discover intelligent non-earthly signals, which perhaps manifest themselves in dimensions that escape our perception, such as the unknown dark matter and energy.
He never won a Nobel prize and lost several scientific wagers, but Stephen Hawking's contributions to the field of cosmology are undoubted. First-line physicists tell Sinc the ideas of the popular scientist that have helped us to better understand our universe, from black holes that emit radiation and vanish to quantum seeds that create galaxies or space-time curvatures that lead us to the Big Bang.
Graphene has extraordinary mechanical and electronic properties, but no magnetic properties. This can be made up for with the help of the lightest element: hydrogen, which transfers its magnetic moment on coming into contact with graphene. This has been demonstrated by a team of European scientists coordinated by the physicist Iván Brihuega from the Autonomous University of Madrid.
There is one year to go until asteroid 2015 TB145 approaches Earth once again, just as it did in 2015 around the night of Halloween, an occasion which astronomers did not pass up to study its characteristics. This dark object measures between 625 and 700 metres, its rotation period is around three hours and, in certain lighting conditions, it resembles a human skull.
Satellites have detected powerful solar flares in the last two months, but this phenomenon has been recorded for over a century. On 10 September 1886, at the age of just 17, a young amateur astronomer using a modest telescope observed from Madrid one of these sudden flashes in a sunspot. He wrote about what he saw, drew a picture of it, and published the data in a French scientific journal. This is what researchers from the Instituto de Astrofísica de Canarias and the Universidad de Extremadura have recently found.
Only three or four supernovas happen in our galaxy every century. These are super-energetic events that release neutrinos at the speed of light. At the Super-Kamiokande detector in Japan, a new computer system has been installed in order to monitor in real time and inform the scientific community of the arrival of these mysterious particles, which can offer crucial information on the collapse of stars and the formation of black holes.
In the race towards the discovery of a ninth planet in our solar system, scientists from around the world strive to calculate its orbit using the tracks left by the small bodies that move well beyond Neptune. Now, astronomers from Spain and University of Cambridge have confirmed, with new calculations, that the orbits of the six extreme trans-Neptunian objects that served as a reference to announce the existence of Planet Nine are not as stable as it was thought.