As the Planet earth gets more densely populated, Astronomers are making discovery of an earth like Exoplanet around Proxima Centauri which happens to be nearest star to the earth means that potentially life bearing planets are right in our backyard. Over the years precisely in 2005 since the Planets hunt begun, Astronomers at various space observatories around the world have found earth like Exoplanets and so far determined which one of them are super fit for humans and other life forms to live in. Lets take a look at some of the most promising real estate in the Galaxy.
1) Proxima b
This is an Earth like planet whose distance is 4.23 light years away from our own earth and it's mass is 1.3 times the earth mass.
Note: A light year is a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 10^12 km (nearly 6 million million miles).
This newly discovered Proxima b is not only the nearest potentially habitable Exoplanet, it is also a rocky planet whose Orbital revolution is 11 days that is to say that a Year in Proxima b is less than two weeks on earth. It is warm enough for Liquid water to exist on its surface Proxima b will certainly be the prime target for the first wave of Interstellar probes.
2) Kapteyn
This is another earth like planet whose distance is 12.8 light years away from our own earth. This planet is reputed to be over 11 Billion years old which may be the oldest potentially habitable Exoplanet known. If life ever evolved in this planet, it is likely to be over twice the age of the earth.
Kapteyn b lies in the star's habitable zone, the range of distances that could support liquid water — and thus, perhaps, life as we know it — on a world's surface. The exoplanet completes one orbit every 48 days. The colder Kapteyn c is much farther out, circling the star once every 121 days.
3) Wolf 1061 c
This earth like planet is 13.8 light years away from our own earth and it's mass is 4.3 times the earth's mass. Wolf 1061 c is one of the nearest potentially habitable Exoplanet with one Face permanently turned to its star or sun and surface gravity 1.6 times the earth. Any life here is likely to be strange.
4) Gilese 667Cc System
It has also been suggested that, since this super-Earth is so close to its star, it is probably tidally locked, rotating only once per revolution and keeping the same face toward its star at all times. This would give Gliese 667 Cc a “day” hemisphere and a “night” hemisphere, so you could choose the time of day you like and stick with it. It would also likely mean a perpetually hot side and a perpetually cold side—unless a thick, Venus-like atmosphere exists that might keep surface temperatures globally similar.
5) Trappist-1
This is an ultra cool dwarf star, scarcely larger than Jupiter and with 0.05% of the sun's luminosity and it's distance from our own earth is 39.5 light years.
The Trappist-1 system consists of three rocky earth sized planets. The two innermost planets are likely hotter than the earth but may still have habitable areas, the outermost planet is probably much colder.
6) Kepler- 186f
Kepler- 186f is an earth cousin whose mass is 1.5 times the earth mass and it 561 light years away from the earth. Kepler- 186f is a part of the 5 planet system around a red dwarf star. It is considered to be one of the best candidates for possible extra solar life and it was targeted in 2014 by Allen Telescope Array.
Kepler-186f orbits its star once every 130 days and receives one-third the energy that Earth does from the sun, placing it near the outer edge of the habitable zone. If you could stand on the surface of Kepler-186f, the brightness of its star at high noon would appear as bright as our sun is about an hour before sunset on Earth.
7) Kepler- 1229b
Kepler- 1229 is an earth like planet with the mass 2.7 times the earth mass and a distance of 769 light years away from the earth. This Exoplanet orbits around its Red dwarf star primary with a year similar to Mecury Planet which is 86 days. Though probably tidally locked, if it has a dense enough atmosphere, a global Green house effect maybe sufficient to conduct heat from the sunward to the night ward side.
8) Kepler- 442b
This Exoplanet is 2.3 times the earth's mass and it's distance is 1,115 Light years away from the earth. It orbits a distant orange dwarf star with an orbital period of 112.3 days and an orbital radius of about 0.4 times that of Earth's (a little larger than the distance of Mercury from the Sun, which is about 0.38 AU).[1][7] It receives about 70% of the sunlight that Earth receives from the Sun. This Kepler- 442b is considered to be one of the likeliest candidate for habitability yet discovered. With a lifespan of 30 or more billion years for the planet's star, any life that evolves here can look forward to a lengthy career.
9) Kepler- 62
Kepler-62e is an exoplanet believed to be a water world, orbiting at about the equivalent distance of Mercury in its planetary system some 1,200 light-years from Earth. The planet is an exciting find to exoplanet researchers because it is close in size to Earth, and also orbits in the habitable region of its star (which is smaller and dimmer than that of Earth's).
The planet is about 1.6 times the size of Earth and orbits its parent red dwarf star about once every 122 days. It is actually one of two possibly habitable planets in its system. Also present, but farther out from the star, is Kepler-62f, which is about 1.4 times the size of Earth.
Now who wants to visit the Planets beyond?
No comments:
Post a Comment