A fascinating galaxy cluster

Astronomers have studied one of the most interesting galaxy clusters, Pandora’s cluster. Probably formed by complex and violent collisions, the unusual cluster has many features never seen before.
At least four galaxy clusters had to collide to form Abell 2744, or Pandora’s cluster. Its nickname comes from the multiple strange phenomena …

A galactic rose for Hubble’s anniversary

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 …

Impact on Jupiter: it was an asteroid

An asteroid about the size of the Titanic caused the dark spot that appeared in Jupiter’s atmosphere on July 19, 2009, according to two papers published recently in the journal Icarus.
Collisions more frequent than we thought
An international team studied the atmospheric temperatures and chemical conditions associated with the impact debris …

The oldest galaxy

The Hubble Space Telescope has glimpsed what might be the most distant galaxy ever detected. It is 13.2 billion light-years away from Earth (the Universe was then about 480 million years old). This discovery reveals that galaxies were forming and growing quite fast in the very early Universe, but also …

Space Oddity in the eye of Hubble

NASA’s Hubble space telescope captured an unusual object, Hanny’s object, discovered in 2008. It is a blurry mass of gas floating next to the galaxy called IC 2947.
A collision between two galaxies
« Hanny’s Voorwerp » (Hanny’s Object in Dutch) is the size of our Milky Way galaxy. It is the …

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