Author Archives: sarahmaddison

25 years of HST

Today marks the 25th anniversary of the Hubble Space Telescope, launched 24 April 1990. Operating in the optical, ultraviolet and near-infrared wavebands, HST’s low-earth orbit gives it unprecedented image quality outside of the “blurring” of the Earth’s turbulent atmosphere. HST … Continue reading

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Magnetic field detection in an Active Galaxy Nucleus

Using the Atacama Large Millimeter/submillimeter Array (ALMA) telescope, astronomers have for the first time detected an extremely powerful magnetic field near the event horizon of a supermassive black hole in the centre of an active galaxy. This discovery supports the … Continue reading

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Complex organic molecules found in protoplanetary disk

For the first time, astronomers have found complex organic molecules in a protoplanetary disk. Using the ALMA telescope, the discovery of methyl cyanide (CH3CN),  cyanoacetylene (HC3N) and hydrogen cyanide (HCN) in the dusty, gas-rich disk surrounding the young star MWC 480, show that … Continue reading

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Old supernova dust factory revealed at the Galactic centre

Astronomers have finally found evidence of dust around a relatively “old” supernova remnant near the centre of our Milky Way galaxy. This new finding can help explain the mystery of how galaxies in the early Universe, only a few billion … Continue reading

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World’s largest asteroid impacts found in central Australia

Studies of drill core rock samples up to 2 km below the ground in north-eastern South Australia, Queensland and the Northern Territory suggest the largest asteroid impact zone yet found (Glikson et al. 2015). The impact zone was found in … Continue reading

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Dark Energy Survey finds new dwarf galaxies

Up to nine new dwarf galaxies close to the Galaxy and the Magellanic Clouds have recently been found. Three of the new objects are definitely dwarf galaxies whilst the others may be fainter dwarfs or even globular clusters. Imaging data … Continue reading

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Mature galaxy in the young Universe

A collaboration of astronomers, lead by Darach Watson from the University of Copenhagen, have discovered one of the most distant galaxies to date named A1689-zD1. The galaxy is at a redshift of 7.5, which means it is about 13 billion … Continue reading

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