Skip to main content

Here is the list of five habitable planets we have found so far :-


1.)  Gliese 667Cc 
Gliese 667Cc is an exoplanet found on 21 November 2011. It is the member of a triple star system Gliese 667. It is situated in Scorpius constellation approximately 23.61 light-years away from the planet earth. 

It has an orbital period of  28 earth days. It is also known as  HD 156384Cc. The exoplanet was found using the radial velocity method.  It is approx 3.7 times heavier than the
the earth. 

2.)  Kepler-186f
It was found on 17 April 2014 by Elisa Quintana. Kepler-186f is an exoplanet orbiting a red dwarf 582 light-years away from the earth. It has a radius of 7,454.1 km with an orbital period of 130 days.

It is the first planet with discovered in habitable zone which has a roughly equal radius with that of our earth. The discovery of Kepler - 186f confirms that the habitable planets like our earth exists somewhere in the universe.

 Kepler-186f is situated in the constellation of Cygnus. Although the size of Kepler-186f is known but its mass and composition is unknown.

3.)  Kepler -442b
Found on 6 January 2015 using Kepler space telescope. Kepler-442b is an exoplanet 1206 light-years away orbiting a K-type main-sequence star in the constellation of Lyra. 

It has orbital period 112  earth days. Kepler-442b is a super-earth with mass and size greater than that of earth. The surface gravity of this super-earth would be 30% more than that of earth assuming a rocky composition similar to that of earth.


4.)  Proxima Centauri b
Proxima Centauri b is the closest exoplanet in the habitable zone of Proxima Centauri star which is the closet star system to the sun.

Discovered on 24 august 2016 this planet has an orbital period of  11 days with the approximately surface temperature of  - 40 degrees celsius. It has a mass at least 1.3 times the mass of the earth. 

5.) Rose 128b
Rose 128b is an earth-sized exoplanet situated 11 light-years away from the earth. It receives 38 %      more sunlight from its star than the earth from the sun.

It is possible that this planet contains liquid water. It was discovered on 15 November 2017 using the radial velocity method. Rose 128b was discovered by  Xavier Bonfils at La Silla Observatory and it has an orbital period of 237 hours.

It is expected to be a temperature suitable for liquid water to exist on the surface. If it has an atmosphere.




      
Labels:

Comments

  1. UnknownMay 19, 2020 at 7:10 PM

    wondering if one day we will survive on one of the mentioned planet.

    thanks 4 the thorough research and clear writing .

    excited for more posts

    ReplyDelete

Post a Comment

Popular posts from this blog

10 hypothetical stars you don't know about

Blue Dwarf :- It is theorized to be developed from a red dwarf when it looses most of it's hydrogen supply.We haven't found any blue dwarf because red dwarf fuses their hydrogen slowly and currently the universe might not old enough to produce any blue dwarf. Black Dwarf  :- It is thought to be the come from a white dwarf which has exhausted all it's fuel and heat energy which now no further emits radiation and are very hard to detect, fortunately, it do retain it's mass allowing scientists to study it's the gravitational field. It is concluded that the time required for a black dwarf to be formed is longer than the age of the universe thus we haven't found it yet. Frozen star :-There is a probability that this star will form in the distant future when the abundance of heavier metals will be more than it is today which is known as the metallicity of the interstellar medium. It is calculated the temperature of this star will be 273 K or 0-degree celsius. T...
1 comment
Read more

Types of black hole

What is a black hole ? A black hole in space is a region where the gravitational force is so strong that even light can not escape it.  Any matter which comes under the influence of a  black hole will be crushed down to a confined space and is being eaten by the black hole.  Black holes are formed when a star dies. Not every star can become a black hole only which have mass 1.4 times the mass of our sun. ( approx   2.8E30). A few black holes are orbited by the other heavenly bodies and are slowly eaten away by the black holes.  As the matter falls towards the event horizon it gets heated due to the increasing gravitational pull and the friction and forms a bright circular disc around the black hole known as Assertion disc .   On the basis of mass and sizes black holes has been divided into four categories:- 1.) Stellar black holes   When a star with a mass range from five to several tens times of the solar masses c...
1 comment
Read more