Astronomers Have Just Found 2 Of The Most Earth-Like Planets Ever

Astronomers have reported discovering two planets orbiting a star located some 12,5 light years away, and they are considered the most Earth like planets ever found.

One of the recently found alien planets, Teegarden b has actually scored the highest Earth Similarity Index (ESI) ever, meaning that it is the most Earth-like planet Ever found.


An international team of researchers has discovered two Earth-like planets around a nearby star called Teegarden located some 12.5 light years away from Earth.

The new worlds have masses similar to that of our planet and their temperatures could be adequate for liquid water to exist on their surfaces.

In other words, this means that the alien worlds are most likely habitable, as astronomers say the two exoplanets are the most Earth-like planets ever found.

The Teegarden system, its planets, and what our solar system looks like.
The Teegarden system, its planets, and what our solar system looks like. Image Credit: A Mendez/PHL.

“The two planets resemble the inner planets of our Solar System,” revealed in a statement lead author Mathias Zechmeister, an astrophysicist at the University of Göttingen.

“They are only slightly heavier than Earth and are located in the so-called habitable zone, where water can be present in liquid form,” Zechmeister added.

Two ‘Perfect’ Worlds?

Of the two planets orbiting Teegarden, its closest orbiting world; Teegarden B is the planet that took experts by surprise: it is the most Earth-like exoplanet that has ever been found.

The star the two planets orbit is Teegarden, a star very different from our sun; it is much cooler and dimmer, and it wasn’t ever spotted until 2003.

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To find the two not-so-distant- alien worlds, astronomers used the CARMENES next-generation telescope Calar Alto (Almeria), in combination with other telescopes such as the Sierra Nevada Observatory (Granada) or the Joan Oro Telescope.

Image of potentially habitable exoplanets. Image Credit: A Mendez/PHL.
Image of potentially habitable exoplanets. Image Credit: A Mendez/PHL.

Using various instruments, astronomers looked for changes in the star’s radial velocity.

And it took astronomers three years of close observation, during which they looked for ‘wobbles’ produced by potential planets orbiting the star, and more than 200 instruments that helped them confirm the existence of the two worlds dubbed Teegarden b and Teegarden c.

“These studies demonstrate that the signals of the two planets cannot be due to the activity of the star, even though we could not detect the transits of the two new planets,” revealed astronomer Victor Sánchez Béjar from the Instituto de Astrofísica de Canarias (AIS).

The Star

According to astronomers, Teegarden is one of the smallest red dwarfs known to mankind having only one tenth of the radius of the Sun.

But despite its relatively close proximity to us, and given its characteristics, the star was identified until 2003.

As an ultracool dwarf, its temperature is 2,600 ° C, compared to 5,500 ° C from the Sun, it is 1,500 times weaker and 10 times less massive than our star.

As a result, it radiates most of its energy at red and infrared wavelengths.