The universe is incredibly old, astoundingly vast and populated by trillions of planets -- so where are all the aliens? Astronomer Stephen Webb has an explanation: we're alone in the universe. In a mind-expanding talk, he spells out the...

Astrophysicist Scott Tremaine (Institute for Advanced Study) describes his experiences at developing our understanding of "shepherding moons" and how it related to the rings of Saturn and Uranus.

Astronomers seem to have revealed a puzzling detail in the way dark matter behaves.

They found small, dense concentrations of dark matter that bend and magnify light much more strongly than...

Observations with ESO telescopes have led to many breakthroughs in astronomy, and, over the years, have been responsible for some truly remarkable findings. Here is our list of ESO´s Top 10 astronomical discoveries so far. top 10: Stars...

Pluto’s haze is incredibly effective at cooling the planet and scientists think we can apply its principles on Earth to fight climate change. Do you think it could work? Pluto Could Be Made A Planet Again, Along With 102 Other Celestial...

Humanity’s drive to explore our planet is one of the defining characteristics of our species. But exploration only works if you know where you are at any given time. Not so easy when you are out at sea with no visible landmarks and the...

Scientists have discovered that a mysterious pressure dubbed "dark energy" makes up about 68 percent of the total energy content of the cosmos, but so far we don't know much more about it. Exploring the...

Astrophysicist Rachel Smith is an observer of forming stars. From 20,000 light years away, Smith trawls the frontiers of our galaxy searching through the chemistry of where in the universe Earth-like planets could exist. “You have a...