How a Giant Telescope Works

Watch our videos commercial free on the SpaceRip app, available in the Apple and Google Play stores. From ESOcast, explore the state-of-the-art technology behind the Very Large telescope, which has [...]

Hubble’s Greatest Snaps

Here’s Hubble’s best year by year from HubbleCast: 1990: Saturn Among the first images to be sent back from Hubble after its launch in April 1990, this image of Saturn [...]

Narrowing the Search for Dark Matter

Scientists have further narrowed the search for a hypothetical particle that could be dark matter, the mysterious stuff that makes up 80 percent of all the mass in the universe. [...]

Birth of a Great Observatory

For many centuries, maps of the southern sky showed extensive blank areas — the Terra Incognita of the heavens. The year 1595: For the first time, Dutch traders set sail [...]

The Spectacle of Star Death

Take a breathtaking journey into the future, five billion years from now, to see the ultimate fate of the Solar System. This gem from HubbleCast showcases stunning Hubble imagery of [...]