Rocky exoplanets in neighbouring Trappist-1 star system suitable to harbour alien life


The latest study held by Princeton and Howard Universities has resulted that Trappist-1 star system might host life. The study depicts that we might be not alone in the universe, aliens might also be living in the nearby star system. The study also estimates that the planets orbiting around Trappist-1 also have adequate protection from the solar winds that can convert a planet into an inhabitable.

Seven planets are orbiting around a star named as Trappist-1. This star is a little bigger than the Jupiter. Trappist-1 is tiny and cold in temperature. This star is very dim, and its brightness is approximately 2000 times lesser than compared to Sun. Earlier the study showed that the probability of life around Trappist-1 is possible by accumulated data of Hubble Space Telescope.

Previous research was issued on February 22, 2017, in which scientists assumed that life is possible on other planets than our planet Earth. These planets are located in the Aquarius Constellation around a faint and small-sized star. All the planets around the Trappist-1 are nearly equal in size, and the size is almost equivalent to that of the earth.

The earlier study appeared in the Astronomical Journal indicates that every planet has lost more water than oceans of Earth. Since the outermost planet is farthest from the Sun, so it receives fewer UV rays which signify that it has lot less amount of water compared to other planets in the star system. The Planets around the Trappist-1 are temperate that shows the probabilities of availability of water on them. This discovery plays a significant role in determining the chance of life outside our Solar System.

The temperature of these planets are slightly different in comparison to Earth and have ample amount of comfortable environment and greenhouse gases. The Trappist-1 star system is only 40 light years away from Earth. It is the first rocky system discovered in orbit which is similar to our solar system. Nasa has several missions like Hubble, Kepler and Spitzer are following up on these planets to identify extraterrestrial life.

The space agency NASA is studying the solar system and beyond to understand better the universe. Scientists are still looking for answers that how did our universe begin and evolve, that how did galaxies, stars, and planetoids come to be and are we alone in the universe. According to the scientists, the crucial question was that these seven stars are whether able to hold their atmosphere or not. Researchers concluded that the outer planets of the star system are capable of holding their environment for the past billion years.

This star system is the home to seven other planets that are similar to the size of Earth. It is very far away from us, estimated 39.6 light years away and is older than our planet. Whereas this finding proposes that might be a few planets among these seven planets can retain their atmosphere, and it is not known yet whether this is sufficient for hosting life. This news has increased the anxiety of the researchers, and they are trying best to discover the more about this star system.

Astronomers are analysing the data sent by James Webb Telescope to find the presence of alien life on TRAPPIST-1. “If these planets have atmospheres, the James Webb Space Telescope will be the key to unlocking their secrets,” said Doug Hudgins, Exoplanet Program Scientist at NASA Headquarters in Washington. “In the meantime, NASA’s missions like Spitzer, Hubble, and Kepler are following up on these planets.”

“These are the best Earth-sized planets for the James Webb Space Telescope to characterize, perhaps for its whole lifetime,” said Hannah Wakeford, postdoctoral fellow at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. At Goddard, engineers and scientists are currently testing the Webb telescope which will be able to view these planets in the infrared, beyond the capabilities we currently have. “The Webb telescope will increase the information we have about these planets immensely. With the extended wavelength coverage we will be able to see if their atmospheres have water, methane, carbon monoxide/dioxide and/or oxygen.”

About the author

Saloni Sharma

Saloni Sharma is an environmental activist with broad, deep experience in print and online writing, publication and site management, news coverage, and editorial team management.

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  • Interesting article. Why such odd sentence construction? Such as: “The study depicts that we might be not alone in the universe
    that can convert a planet into an inhabitable.
    This star is a little bigger than the Jupiter.”

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