Technically speaking, antimatter would be the aggregation of antiparticles. Being antiparticles the opposite charge analogous particles, that is, f.i. the positron (a positively charged electron) or the antiproton (a negative proton), which occur in the Universe in a smaller amount compared to the particles, and that when mixed with "normal" matter annihilate each other, producing vast quantities of high-energy photons and other particle-antiparticle pairs (such as the neutrino-antineutrino).’
We all know from our sensorial experience that the matter is everywhere in the known Universe in considerable masses, but the antimatter seems …

For many years, the thesis
of the formation of the
building blocks of life under
the extreme climatic events
of the still-evolving Earth
has been accepted - more
or less - by the scientific
community as one of the
most

“e” of Gliese 581 was announced to be discovered by the research team at La Silla observatory in Chile in a recent conference. The particularity of Gliese 581-e is that is the least massive exoplanet discovered until today, due to the extensive work during 4 years of observation using the HARPS spectrograph of the 12-feet ESO telescope.

An exoplanet is a regular planet discovered outside the vicinity of our Solar System. Up to 300 of these exoplanets have already been discovered since the first one - Pegasi b - in 1995.
The …

Recently (Feb 10) there was a final collision of two Earth-surveying satellites, with the unavoidable result of the destruction of both devices.

As most of us know, the momentum of the satellites is not completely lost due to the collision, but the debris of the satellites are still circling around the orbit of the Earth at a more than reasonable speed.
According to the European Space Agency (ESA), the European Space Agency’s ERS-2 and Envisat missions are 30% more likely to face a catastrophic impact from space debris in the wake …

Until very recently, the approximate date for the appearance of an oxygenated atmosphere on Earth - which lead to the appearance of more complex organisms - had been situated at about 2.4 billion years, which in geological and planetary terms is about half the whole age of the Earth.
Nevertheless, some scientists had long sustained the thesis that the oxydation process might well be before 3 billion years ago. In 2000, James Farquhar of the University of Maryland, College Park, had concluded - thanks to the analysis of isotopic …

Dark matter is and has been an elusive topic in Astronomy and Physics for the last seven decades. It has gravity but does not interact in any other usual way with the "normal" matter which composes the gases, stars and people.
Dark matter has always been evidenced indirectly, as many scientists and their calculations point to the fact that there is not enough normal matter in the galaxies to justify their gravity. It seems as if dark matter is composed of a specially elusive particle that interacts with normal matter only …

Since ages, possibly centuries, the man has ever wondered if there are any other planets in the Universe with similar characteristics to the Earth. What is more, many sci-fi authors have theorized - in its own special way - about the terraformation and interplanetary travels that would lead to the formation of colonies in other worlds.
At La Hueca, I read about the recent discovery of a planet with climatic and atmospheric conditions similar to the Earth’s. Fortunately, it’s located in a Constelation relatively close to us, just 20 light years …

In the 16th Century, Ferdinand Magellan - a portuguese seaman - was on his journey through the southern hemisphere when he hazed at the sky and saw some strange clouds. Since then, these "clouds" - which in turn are galaxies - were known as the Magellan Clouds.

And ever since until recently, the scientific community was convinced that those galaxies were no more than mere satellite galaxies to ours - the Milky Way.
But, in recent studies conducted by Dr. Gurtina Besla at the Hardvard-Smithsonian Center for Astrophysics, the conclusions tend to …