Dark energy, in the form of a cosmological constant (Λ), has been seen as responsible for the accelerating expansion of space, holding a steady energy density.

While sifting out signatures of supernova remnants, a high-schooler stumbled upon the afterglow of a dormant black hole. It ...

A research team linked nearby stellar explosions to at least one, possibly two, mass die-offs after calculating the supernova ...

Violent supernovas may have caused two of Earth’s largest mass extinctions that have never been completely explained, ...

An atom is so small that a single drop of water contains more than a billion atoms. Although tiny, atoms are mostly empty space. The simplified model of the atom is that of a cloud of negative ...

At least two mass extinction events in Earth's history were likely caused by the 'devastating' effects of nearby supernova explosions, a new study suggests. Researchers say these super-powerful blasts ...

We know that regular supernovas pose no existential threat to life on Earth in the near-term. But there are other varieties ...

Deaths of nearby massive stars may have played a significant role in triggering at least two mass extinction events in ...

I'm Amy. Traffic around the Palace of Westminster in London came to a standstill on Saturday as emergency services tried to reach a man who climbed the Big Ben tower holding a Palestinian flag ...

One such mega-city can be found in Africa. The place in question is Lagos in Nigeria, which is on track to become the largest city in the world by the end of the century, with a projected ...