Universe

Thanks to the Cosmic Web Imager (a spectrographic imager that takes photographs at different wavelengths simultaneously), a team of astronomers from the California Institute of Technology (CalTech) has managed for the first time to take 3D images of the intergalactic medium (IGM) which is equivalent to 3% of the entire universe.

The WISE (Wide-field Infrared Survey Explorer) and Spitzer space telescopes have made possible the discovery of what is undoubtedly now the coldest star in the universe, a brown dwarf located by astronomer Kevin Luhman of Penn State University (USA). ).

Curiosities of the natural satellite of the Earth.

NASA's Wide Field Infrared Explorer, the WISE telescope, has made it possible to locate what appears to be the cosmic seed from which a black hole will later sprout, that finite portion of space within which there is such a high concentration of mass that none material particle, not even light, can escape from it.

A group of scientists has found the first evidence of the expansion of the universe after the Big Bang: the trace of the first gravitational waves.

The NuStar (Nuclear Spectroscopic Telescope Array) telescope has captured a spectacular image of Cassiopeia A, a remnant of a star that exploded as a supernova more than 11,000 years ago. Because the supernova was so far from Earth, its light reached our planet only 350 years ago.

A team of scientists from the Australian National University (ANU) has discovered the oldest known star so far, with an age of about 13,600 years, relegating to second place the other longest-lived star that dates back to 13.2 billion years. . The study has been published in the journal Nature.

Improvements in technical equipment and scientific knowledge mean that we can increasingly measure everything around us with more precision. And not only that, because according to the data announced at the last annual meeting of the American Astronomical Society, an international group of researchers has managed to measure with a precision of 1% the distance to galaxies located more than 6,000 million light years from the Land. In other words, with unprecedented precision.