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European Southern Observatory Articles

Globular Cluster Aging Revealed in New Study Globular Cluster Aging Revealed in New Study

Globular clusters are spherical groupings of stars tightly bound by gravity. While these objects are usually 12 to 13 billion years old, a new study has found that clusters can appear to be vastly different ages, depending on the behavior …

New “Green Bean” Galaxies Discovered New “Green Bean” Galaxies Discovered

A new type of galaxy nicknamed “green bean galaxies” has been identified and they are some of the rarest objects in the known universe. The nickname comes from the galaxies’ appearance: they glow with intense light generated by the ionized …

Rocky Planets Could Be More Common Than Previously Thought Rocky Planets Could Be More Common Than Previously Thought

Astronomers have now observed that the dust disc orbiting a brown dwarf contains millimeter-sized solid particles – the same “grains” found in the denser discs surrounding new stars.The new data suggests that rocky planets, such as Earth, may be more …

Astronomers Discover Dwarf Planet Makemake Has No Atmosphere Astronomers Discover Dwarf Planet Makemake Has No Atmosphere

Astronomers have discovered that a dwarf planet in our solar system named Makemake has no atmosphere. The object, which orbits in the outer solar system, was expected to have an atmosphere similar to another dwarf planet, Pluto, but new observations …

Close Rogue Planet Identified by ESO Astronomers Close Rogue Planet Identified by ESO Astronomers

Astronomers have identified what is “very probably” a relatively close-by planet hurtling through space – not orbiting a star. The European Southern Observatory used its Very Large Telescope and the Canada-France-Hawaii Telescope to study the object, which it calls the …

New Estimate: Billions of Earth-like Planets in our Galaxy New Estimate: Billions of Earth-like Planets in our Galaxy

The European Southern Observatory (ESO) has announced a new estimate for the number of planets similar to Earth in the Milky Way Galaxy: tens of billions. “Our new observations with HARPS mean that about 40% of all red dwarf stars …