Astronomers Archive

  • Approximately every other star in the Milky Way galaxy is in a 'binary' system. These binaries are made up of two stars orbiting around a common centre of gravity. The time taken for the stars in the binary to make one revolution is called the 'orbital period'. Binaries have a wide range of orbital period. The closest stellar system to the Sun is alpha Centauri which has two stars not unlike our Sun orbiting around one another every 80 years. A third member of the system, Proxima Centauri, which is much smaller red dwarf star, orbits around these two stars once every 10,000 years.

    A new ultra-compact binary star

    Approximately every other star in the Milky Way galaxy is in a 'binary' system. These binaries are made up of two stars orbiting around a common centre of gravity. The time taken for the stars in the binary to make one revolution is called the 'orbital period'. Binaries have a wide range of orbital period. The closest stellar system to the Sun is alpha Centauri which has two stars not unlike our Sun orbiting around one another every 80 years. A third member of the system, Proxima Centauri, which is much smaller red dwarf star, orbits around these two stars once every 10,000 years.

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  • Article by Michael Burton, Director of the Armagh Observatory and Planetarium NASA’s Curiosity Mars rover recently discovered organic molecules in 3 billion year old Martian rocks. This material may have […]

    The Milky Way is not low fat: grease in space

    Article by Michael Burton, Director of the Armagh Observatory and Planetarium NASA’s Curiosity Mars rover recently discovered organic molecules in 3 billion year old Martian rocks. This material may have […]

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  • Article by Jorick Vink , Astronomer at the Armagh Observatory and Planetarium When you are fortunate enough to have a clear view of the night sky, and you start wondering […]

    Massive stars – what are they?

    Article by Jorick Vink , Astronomer at the Armagh Observatory and Planetarium When you are fortunate enough to have a clear view of the night sky, and you start wondering […]

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  • Article by: Tom Watts In collaboration with universities in England, Australia and Thailand, the Armagh Observatory and Planetarium is part of a team operating and commissioning the new Gravitational wave […]

    La Palma and GOTO

    Article by: Tom Watts In collaboration with universities in England, Australia and Thailand, the Armagh Observatory and Planetarium is part of a team operating and commissioning the new Gravitational wave […]

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  •   No one undertakes research in physics with the intention of winning a prize. It is the joy of discovering something no one knew before. – Professor Stephen Hawking Today, […]

    Remembering Professor Stephen Hawking

      No one undertakes research in physics with the intention of winning a prize. It is the joy of discovering something no one knew before. – Professor Stephen Hawking Today, […]

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  • Article written by: Phil Hall Two weeks ago, a space-suited mannequin was strapped inside a cherry red car, the car was strapped inside a rocket, and the whole lot was […]

    Spaceflight for Dummies

    Article written by: Phil Hall Two weeks ago, a space-suited mannequin was strapped inside a cherry red car, the car was strapped inside a rocket, and the whole lot was […]

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  • Recent observations of the helium star HD144941 have been obtained from space. Armagh astronomers Professor Simon Jeffery and Dr Gavin Ramsay have discovered that they show a light curve best […]

    K2 spots a rotating Helium Star

    Recent observations of the helium star HD144941 have been obtained from space. Armagh astronomers Professor Simon Jeffery and Dr Gavin Ramsay have discovered that they show a light curve best […]

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  • Since the beginning of the space age, humanity has been sending robotic emissaries to all corners of the solar system. These represent some of the most complex technological undertakings ever […]

    Planetary Exploration in 2018

    Since the beginning of the space age, humanity has been sending robotic emissaries to all corners of the solar system. These represent some of the most complex technological undertakings ever […]

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