The portrait of a “super-exotic super-Earth”

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An international team of astronomers revealed the details of a “super-exotic” exoplanet, the densest known rocky planet.
In the image below, you can see a simulation of the silhouette of this exoplanet, 55 Cancri e, passing in front of its parent star, compared to the Earth and Jupiter transiting our Sun, as …

What if spacetime is timeless?

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Time is everywhere in our lives, and its concept is deeply rooted in our existence. You know how old you are, how long a day is, or how long it will take you to go from one place to another. Time, in our everyday life is simply the way we …

No dark flow in the Universe?

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About three years ago, astrophysicists discovered an unexplained large-scale coherent motion in our Universe, the “dark flow”. A new study now contradicts the dark flow theory.
First observed in 2008 by a NASA team led by Alexander Kashlinsky, the dark flow describes the coherent motion of galaxy clusters. This is in …

A galactic rose for Hubble’s anniversary

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Today is the 21st anniversary of the Hubble Space Telescope’s deployment into space. To celebrate the occasion, astronomers at the Space Telescope Science Institute in Baltimore pointed the telescope’s eye to a particularly beautiful object: Arp 273.
Hubble was launched April 24, 1990, aboard Discovery’s STS-31 mission. It has made numerous discoveries, some …

An extremely old galaxy challenges theory

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Astronomers have discovered a distant galaxy whose stars were born unexpectedly early in our Universe’s history. The observation, which would have been impossible without a cosmic gravitational lens, sheds new light on the formation of the first galaxies as well as on the evolution of the early Universe.
Clusters of galaxies …

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