Caoimhín's Content

Astronomical and Educational content, in English and Irish

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  • Latitude and the Celestial Pole: North and South

    Today, we are going to take a quick look at how you can figure out, and the limitations to figuring out, roughly where you are using the sky. Of course, we’re mostly going to be looking at the nighttime sky, so we will move into nighttime as usual, with a view from Ireland and some

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  • Looking back: Halley’s Comet in 1986 and Comet Encke

    Today, we are going to hop into the past, but we’re not going to go particularly distantly into the past. Going into the past isn’t something that I regularly do on this channel, but it is something that we have done before and I may do more regularly, there are some interesting things that have

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  • An Eclipse from the Earth, Sun, and Moon: 2186 Eclipse!

    Today, we are yet again heading far into the future to take a look at an event that won’t be occurring for hundreds of years. We are looking all the way forward to 2186 and we’re going to be looking for the 16th of July. Starting as normal, from Ireland and during the day, it

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  • Comet 3I/ATLAS: How Close will it Get? Plus other Comets!

    Today, we are going to have a quick review of a couple of the major comets that have come through our sky in the past couple of months and will continue through our sky in a few months to come. We’re also going to take a look at one of those comets, 3I/ATLAS, from a

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  • Meteor Showers, and More, in November

    Today we will continue to look at the November sky. We are now into November and we’re going to start by taking a look at the sky on the 5th of November. Just as the Sun sets, the radiants of the first meteor showers of the month will already be up. Low in the east

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  • From Dust and Gas to Rogue Planets and Brown Dwarfs

    Happy Halloween everybody! This piece should be coming out before the 31st but this is the closest to Halloween that I will be posting. We’re going to go on a bit of a journey through a few things today. We’re starting by taking a look at the night sky for Halloween, moving all the way

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  • A Preview of the November Night Sky

    Today, we are going to take a look ahead to the coming month of November to see what the sky is going to look like and what kind of objects we’re going to be able to see. We’ll briefly start with sunset on the 1st of November. This is of course a reasonably similar sky

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  • Asteroid 2025 PN7: A Temporary Moon

    In several recent pieces we have taken a look at a few different comets and a lot of them were discovered just this year. For example, Comet 3I/ATLAS, which is an interstellar comet, it’s full name is 2025 3I/ATLAS, it was only discovered this year. In order to take a look at this comet in

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  • Comets and Meteor Showers: The Orionids and Halley’s Comet

    Today, we’re starting by looking at the sky for October 21st. We’re looking at the sky reasonably late, just before midnight. We’re looking at the 21st because we are taking a look for the Orionid meteor shower, and they peak on October 21st. This meteor shower have got a maximum Zenith Hourly Rate of about

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  • Late October Sky: Comets and More | An Spéir Déanach i mí Dheireadh Fómhair: Cóiméid agus Níos Mó

    Today, we will be looking at the sky for the second half of the month of October and we’re going to start in the morning, rather than at sunset as we usually do. Looking at the sky in the southeast before sunrise on the 17th, the planets Jupiter and Venus are prominently visible. It is

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