Planetary alignment: what is the astronomical phenomenon, when it will happen and how to see it

On February 28, 2025, seven planets will align in the sky, an astronomical spectacle that will not occur again for another 400 years. But what causes this 'planetary parade' in space? How will we be able to observe this alignment and distinguish each of the planets?

This phenomenon is known as planetary conjunction, which refers to the arrangement of two or more celestial bodies when they align from the point of view of the observer on Earth.

That is, during the alignment, several planets will appear to be in a straight line as seen from our planet. This event will provide astronomers with a unique opportunity to study the dynamics of the planets and their gravitational interactions.

The planets closest to Earth will be involved in this phenomenon. Just after sunset, Saturn, Mercury, Neptune, Venus, Uranus, Jupiter and Mars will line up in the sky.

This event will not be repeated until the year 2492, making it a very special event for astronomy enthusiasts. Even the most skeptical will be impressed, as although the alignment will not be perfect in space, its visual effect from Earth will be remarkable and spectacular.

The best time to observe the alignment will be just after sunset , although it is important to remember that the exact time each planet will become visible will depend on the observer's location on Earth.

This phenomenon will be visible all over the world, but those in the northern hemisphere or in countries close to the equator will have an advantage in enjoying this impressive visual spectacle. In Argentina, it will be visible after the sun sets, between 15, 20 minutes or a maximum of one hour.

Astronomy

Favorable weather conditions are essential for good observations. Also, moving away from urban areas with high light pollution will help to enjoy a clearer sky.

It is especially recommended to stay in rural or mountainous areas, where the views of the astronomical event are clearer. If you have small telescopes, the experience will be greatly enriched.

This will be a unique time to observe up to seven planets, as this particular phenomenon will not be repeated until the year 2492.