In a very distant galaxy: FGC 1287
What mechanism is stripping off gas away from the galaxy FGC 1287 and producing a long tail of neutral hydrogen?
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In a very distant galaxy: 3C 75
Two black holes orbit each other in the centre of collision of two galaxies, in the Abell 400 galaxy cluster.
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In a very distant galaxy: Hercules A
Hercules A is much bigger than what we see in the visible light. Observed in the radio band, it reveals the activity of a central black hole with the mass of 4 billion suns.
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In a very distant galaxy: NGC 1277
It is challenging to find pristine galaxies like NGC 1277, which allows us to see what otherwise would be too far and faint.
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In a very distant galaxy: Messier 90
Spiral galaxies NGC 4569 and IC 3583 highlight the importance of the environment to understand how galaxies evolve.
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Water in the Universe: the water pathway
Sun-like stars and planetary systems are known to form in interstellar molecular clouds composed mostly of hydrogen and small amounts of other elements like helium, oxygen and carbon.
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Water in the Universe: water on exoplanets
Astronomers have already confirmed more than 2000 planets orbiting other stars. In some of the larger planets, similar to Jupiter, water vapour was detected in their atmospheres. For smaller planets, this detection is more difficult.
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Water in the Universe: the ice mountains of Pluto
A mantle of water ice is probably enclosing Pluto’s rocky core. Images captured by NASA’s New Horizons mission revealed that part of this water ice is visible at the surface.
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