The accelerated expansion of the universe may not rely on the influence of a mysterious dark energy, but could be possible if there is a parallel universe that mirrors our own driving that expansion, at least according to a new paper published by a researcher seeking to find an answer to this baffling phenomenon. Along with the concept of dark matter, the hypothetical source of moreread more

A potential biosignature indicating the presence of ancient lifeforms has turned up in a rock on the surface of Mars, in the form of what may be traces of chemical reactions from the life processes of ancient microbes. Although the sample will need to be returned to Earth to confirmread more