Adrian Dening's Stars Over Somerset

    Monday 21st to Sunday 27th July 2025

     

    We'll start with a bit of a visual challenge for early risers, around 4am on Wednesday 23rd.  Look towards the north east to see a very bright, magnitude -1.8 Jupiter.  Not much of a challenge there, but just above Jupiter will be a hard-to-spot thin 3%-lit waning crescent Moon.  Look further to the right to find an incredibly bright, magnitude -4.0 planet Venus.

    A constellation is a group of visible stars that form a perceived shape - often animals or mythological creatures and they can date back thousands of years.  In 1922, the International Astronomical Union formally adopted the current list of 88 different constellations.  There are other patterns of stars that form easily-recognisable shapes that astronomers use to find their way around the night sky - these are called "asterisms" and they may be part of a larger constellation.

     

    One such example is known as the "Teapot" and it is part of the constellation Sagittarius.  Towards the end of the week, if you look towards the south around midnight, Sagittarius will appear close to the horizon and the "Teapot" asterism should be obvious......it looks like a teapot with the handle, lid and spout!

    A little to the right of the teapot's lid are a couple of Messier objects to aim your telescope towards - M8 "The Lagoon Nebula" and M20 "The Trifid Nebula".  M8 is classed as an emission nebula, where stars are created and with a magnitude of about +4.6 you might just be able to make out a faint fuzzy blob with the naked eye from a very dark location.  M20 is another emission nebula, but with a magnitude of +6.3 you will definitely need your telescope or binoculars for that one!

    www.starsoversomerset.com

    Screenshots courtesy of Stellarium

    Copyright Adrian Dening and Radio Ninesprings 2025

     

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