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A few weeks ago my daughter phoned me to say she was looking at a very large bright object in the sky in the direction of the Preseli hills. She wondered if it was a planet. I went out to have a look and sure enough this was much brighter and much larger than a star or planet. I looked at it for several minutes and quite suddenly it just, for want of a better phrase, went out. Just completely gone.

Last night I saw something very similar. Again it was much larger than a star but this time appeared yellowish in colour. I kept looking as I was doing a few small outdoor jobs and then, although I didn't see it happen this time, it suddenly disappeared. I am mystified as to what these lights could have been. Looked on internet and hoped someone else may have seen them but no luck.

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    $\begingroup$ In order to answer this, we would need to know where you are, what direction you were looking in, and how high in the sky the object was. $\endgroup$ – Phiteros Feb 11 '17 at 23:35
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    $\begingroup$ Please read astronomy.stackexchange.com/help/on-topic, specifically the section about "that light in the sky". The phenomena you describe are not astronomical, and are mostly likely human activity. $\endgroup$ – James K Feb 12 '17 at 1:03
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    $\begingroup$ The Preseli hills are in west Wales: en.wikipedia.org/wiki/Preseli_Hills If the object was anywhere near the ecliptic, chances are very good it was the planet Venus, and clouds. Venus has been particularly bright lately. Other good possibility is a satellite flare: en.wikipedia.org/wiki/Satellite_flare $\endgroup$ – Wayfaring Stranger Feb 12 '17 at 15:52
  • $\begingroup$ Thank you for your comments.My daughter was driving on the A40 toward Haverfordwest at the time.She said it was on her right so I guess north westish.Time I think was after 10pm.I replied to her message at 2300 hrs.It was 23rd January.I was at home near Llanboidy in Carmarthenshire.Whatever I saw on Friday was from Tiers Cross in Pembrokeshire ,I guess around 8.30 -9pm.Watched it for maybe 20 mins but don't know how long it was there. $\endgroup$ – Anni Slaven Feb 12 '17 at 19:43
  • $\begingroup$ Anni, edit all your comment answers into your question please. Questions should be self contained and contain all necessary information (comments can disappear). $\endgroup$ – user1569 Feb 13 '17 at 9:11
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If you have a date and time you can go to Flightradar24 and recreate all of the planes that flew over the area. An oncoming large body jet can look a lot like a yellow star if it has its "headlights" turned on, and if it is coming in your direction and descending, it can look surprisingly motionless. Since the light is focused forward, it can suddenly dim if the plane changes direction.

The lovely NATS video A Day Over the UK shows a substantial amount of East/West air traffic in that area, including several flights off of the main corridor.

However if you watched it for 20 minutes, this can obviously be ruled out.

Venus and Mars were too close to the horizon at 21:00 GMT in the UK, but I recommend you play with in-the-sky.org a bit. Choose Planetarium. It should know your approximate location based on your internet access so as long as the location is roughly correct the only think you need to do is choose a date and time to recreate, and enjoy! I hear the site works on phones nicely as well.

enter image description here

above: Screen shot fro in-the-sky.org.

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