In this episode of the Hubblecast, Joe Liske (aka Dr J) shows how a team of astronomers has used Hubble and a battery of other telescopes to discover the secrets of massive galaxy cluster MACS J0717. They have found that an invisible filament of dark matter extends out of the cluster. This is our first direct glimpse of the shape of the scaffolding that gives the Universe its structure.

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Visual design and editing: Martin Kornmesser
Web and technical support: Mathias Andre and Raquel Yumi Shida
Written by: Oli Usher
Presented by: Joe Liske (Dr J)
Images: NASA, ESA, Harald Ebeling (University of Hawaii at Manoa), Jean-Paul Kneib (LAM)
Visualisations: Luis Calçada
Footage: Herbert Zodet
Music: Toomas Erm
Directed by: Oli Usher
Cinematography: Peter Rixner (, Herbert Zodet
Executive producer: Lars Lindberg Christensen

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Welcome to the Hubblecast!

Hubblecast features news and Images from the NASA/ESA Hubble Space Telescope.

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