The October sky offers one of those spectacles best enjoyed at leisure: the Draconids, a meteor shower . In Spain, and generally throughout the Northern Hemisphere, they can be observed with the naked eye on the first nights of the month , without the need for telescopes or binoculars, provided the clouds clear and you get away from light pollution.
What are the Draconids and why do they occur?
The Draconids originate when Earth passes through debris from comet 21P/Giacobini–Zinner , a short-period comet that leaves a trail of dust and ice in its orbit. As these particles enter the atmosphere, they heat up and disintegrate, generating flashes that we identify as shooting stars.
The point in the sky from which they appear to originate is called the radiant and is located in the constellation Draco. Hence its name. Near the stars Eltanin and Rastaban, "the eyes of the dragon," we find the reference point for orientation , although meteors can appear to cross any area of the sky.
One of its defining characteristics is its speed: they are relatively slow meteors, around 20 km/s , which makes it easier to follow their path with the eye compared to other faster showers.
Its average activity in normal years is around a few meteors per hour , but its behavior is capricious. In 1933 and 1946, storms with thousands of meteors per hour were recorded, and in 2011 there was a remarkable outburst with several hundred per hour widely observed in Europe.
Dates, times and activity forecasts
In October, the Draconids are active from the 6th to the 10th , with the peak expected on October 8th . In our country, it's best to observe from dusk until around midnight , when Draco is high in the sky and the radiant is favorable for visible meteors.
This year the Moon is working against us: around the 7th–8th it will be almost full, which means a lot of background light and the fainter meteors will be lost . Even so, the brightest ones should be visible if the sky is clear and the surroundings are dark.
Forecasts predict a brief burst that could raise the rate to 150–400 meteors per hour for a few hours. Some models place the peak in the evening, so in parts of Europe it could coincide with daylight hours; therefore, looking as soon as night falls on the 8th remains the most sensible strategy to try to catch the most active period visible from Spain.
Several orbital calculations suggest that, after gravitational disturbances from Jupiter in the coming years, we wouldn't see a similar surge again until 2078. In any case, as with any unpredictable rainfall, it's best to maintain realistic expectations: it could remain a moderate increase or surprise us with a significant spike.
Where and how to observe them
To improve visibility, there are two key factors: clear skies and minimal artificial light . Get away from the city, find a wide horizon, and avoid direct spotlights. A mat or lounge chair will help you comfortably view a large portion of the celestial vault.
No equipment is necessary. In fact, telescopes reduce the field of view and are impractical for meteor showers. It's best to use your eyes, dress warmly, and be patient for at least an hour of continuous observation.
Before you begin, let your eyes adjust: 20–40 minutes without screens or bright lights greatly improves your ability to detect fainter lines. If the moon is dazzling, try positioning yourself with a lateral obstacle (a wall or tree) that partially blocks it.
To orient yourself, look towards the north: the radiant is in Draco, between Ursa Major and Ursa Minor. However, meteors can appear from any direction , so it's best to observe a wide area of the sky. Star chart apps can help you locate constellations.
Comet 21P/Giacobini–Zinner and the unpredictable nature of the shower
The parent comet, 21P/Giacobini–Zinner, is a periodic comet with an orbit around the Sun of about 6,6 years . At its last perihelion, on March 29, 2025 , it renewed part of the trail of debris that Earth passes through in October.
The dust streams left by the comet are not uniform: they contain denser filaments that, when they coincide with our orbit, cause sudden increases in meteors . That's the reason for its reputation as a "lottery": there are quiet years and years with surprising peaks.
The gravitational environment also plays a role. Interactions with giant planets like Jupiter can slightly deflect debris streams, changing the amount of particles we find. In fact, a major orbital readjustment is expected after 2029 , which would reduce the likelihood of large outbursts for several decades.
As a historical curiosity, this comet was the first visited by a spacecraft : the ICE probe crossed its tail in 1985, providing valuable data on cometary plasma and dust that today help to model showers such as the Draconids.
Weather permitting, the date is clear: the night of October 8th, from dusk until midnight , in a dark location with your eyes already adjusted. Despite the full moon, the brightest meteors should be visible, and there's a chance of a brief surge that could make it one of the most talked-about nights of the year for stargazers.
