Astronomers are looking for many things as they search for potential habitable worlds outside the solar system,media BGR reported. The rocky world of the so-called “habitable zone” (meaning the temperature of the region around the star suggests that a planet may be livable) is key, but the existence of water is also a major problem.
The earth is covered by a lot of water, and modern scientific research generally believes that life originated in the ocean before entering the land. So finding a world full of water would be incredibly good news. A new paper, published in astrophysical research letters, provides good and bad news when looking for water on exoplanets.
A team of scientists, including researchers from the University of Cambridge, analyzed atmospheric observations of 19 confirmed exoplanets to estimate their composition. The exoplanets range in mass from about 10 Earths to 600 Earths.
They found that water is actually quite common in the atmospheres of various types of exoplanets. On its own, this may be good news. Unfortunately, it seems that water may exist in many extraterrestrial worlds, but rarely in large quantities.
Dr Nikku Madhusudhan, who led the study, explained: “We saw the first signs of an extraterrestrial chemical model, and we saw that they had a variety of options in terms of chemical composition. Incredibly, there is such a low water abundance in the atmospheres of the various planets orbiting various stars. “
The researchers hope to expand the scope of the survey in the future and map the water concentration sharper on a large number of exoplanets.