How to map the Universe?
Audio 48:30
The 3D map of the SDSS project is represented as a rainbow of colors, at the center of the observable Universe (the outer sphere, shows the fluctuations of the cosmic microwave background).
Anand Raichoor (EPFL), Ashley Ross (Ohio State University), SDSS
By: Caroline Lachowsky
50 mins
How to map the Universe?
Why and how far?
Sidereal and astounding answers of the astrophysicists who have just carried out the largest cartography of the Universe in 3D ... (Replay of September 15, 2020)
Publicity
Let's go on a sidereal journey in time and space, to discover the largest 3-dimensional map of the Universe ever made ... A technical and human scientific feat, unveiled on July 20, 2020 by an international collaboration astrophysicists. The result of more than 20 years of observation, this astronomical map includes 4 million galaxies and can be traced back up to 11 billion years ... The further we see in space, the further we see far in time ! This map is therefore the very first to account for almost the entire history of the expansion of the Universe. What does it teach us about this expansion,but also on the shape of the Universe? And in the place of our galaxy? How do you go about mapping the cosmos in 3D? What clues about this mysterious dark energy which constitutes the essence of the Universe?
With
Jean-Paul Kneib
, astrophysicist at the École Polytechnique, initiator of the eBOSS project which is the fourth and last survey which made it possible to complete and constitute this map of the Universe in 3D and
David Elbaz,
astrophysicist at CEA (IRFU) - Paris Saclay University.
Video:
The eBOSS 3D map of the Universe.
The same video for smartphones and tablets
here
.
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