Caoimhín's Content

Astronomical and Educational content, in English and Irish

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  • Earthshine: How to See it This Month!

    Today we are going to quickly review what some of the planets are doing in April, now that we’re getting a little bit closer to their conjunctions, and we’re also going to discuss a phenomenon known as Earthshine. We’ll begin with the Sun setting into the west for the 18th. We’re just past the New…

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  • Stephan’s Quintet, the Carina Nebula, JWST and Lagrangian Points!

    Today we are going to take a look at a variety of deep sky objects, starting with a group of galaxies. Stellarium, as I mentioned in the previous piece, it did recently have an update and that update included new listings for things and hopefully it may contain some new images as well. We’re looking…

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  • April Constellations and Various Sky Cultures in Stellarium

    Today we are going to be taking a look at the constellations that we’re going to see over the course of the month of April. Taking a look at the sky for mid-April and looking at the daytime sky, the Sun is almost directly in the south at just about 1:30, because we are at…

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  • Where is Artemis II? The Darkside of the Moon and Ephemeris Data from JPL!

    Today we are going to take a quick look yet again at the Moon and talk a little bit more about the Artemis II mission to the Moon, the first crewed mission to the Moon in decades. To take a look at the Moon, we’re going to have to wait for it to come up.…

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  • The April Full Moon: Pink Moon, Artemis II and Easter

    Today we are going to be looking at the Moon. We are going to start by taking a look at sunset yesterday, so we’re taking a look at the 1st of April or April Fool’s Day, which was the date of the Full Moon this month. It has just happened, last night the Moon was…

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  • Jupiter’s Moons, Lightspeed and a 2092 Conjunction!

    Today, we are going to look ahead to an event that is coming up in the future. This time we are only looking a few decades ahead, to 2092. For those of you who are regular readers of these posts, you know that we take a look into the future for future events occasionally, although…

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  • April Comets: Where and When to see C/2026 A1 MAPS and C/2025 R3 PANSTARRS

    Today, as promised, we are going to take a look at a couple of comets. We’re beginning on the 3rd of April, which is just a little before Comet 2026 A1 MAPS reaches perihelion. MAPS is the name of the observation program, really the initials of the astronomers involved, that discovered this comet. This comet…

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  • The Night Sky for April 2026

    Today we are going to take a look into the month of April to see what will be coming up in the sky. Taking a look firstly sunset on the 1st of April, Venus is nice and bright to the West, and also quite far from the Sun in the sky, so it will be…

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  • Where is it an Occultation? Regulus and the Moon!

    Today we are going to take a closer look at a conjunction which is really an occultation, the occultation of Regulus by the Moon. In a piece a little earlier this month I went through several of the close conjunctions, planetary conjunctions and this lunar-stellar conjunction, that are visible during March. There was another piece…

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  • Sè Yblááfkaky: A Very Late 24th Speedlang

    Sè Yblááfkaky ( /se˩ ɨˈblɑːf˥ˌka.kɨ/ ) is the language which I created for the 24th Speed Lang challenge, but I don’t think I ever submitted it. This is a language that I created for the challenge, I completed the challenge, I wrote all of the things that needed to be written, and then just never…

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