Stars Current Affairs - 2020

Existence of Earth like planet orbiting Proxima Centauri confirmed

On May 30, 2020, the international team of scientists confirmed the existence of the planet that is of the size of the earth. The planet is revolving Proxima Centauri star in the Alpha Centauri star system.

Highlights

The planet has the mass of 1.17 times as that of the earth. The mass of the planet was measured using radial velocity measurements with the help of a spectrograph. The name of the spectrograph used to detect the planet mass is ESPRESSO.

The planet has been named Proxima b. Proxima b is 20 times closer to its star than the earth is to the sun. The new planet found orbits its sun in just 11.2 days.

Proxima Centauri

Proxima Centauri is located 4.2 light years away from the sun. It is a red dwarf star and is one-eighth the mass of the sun. The Proxima b was discovered in 2016 simply as a planet that is revolving Proxima Centauri. The recent discovery says that the planet is similar to that of the earth.

Proxima Centauri is the closest star to the sun.

Super Earth discovered

The scientists from New Zealand have discovered the “Super Earth”. It potentially holds the conditions to sustain human life.

Highlights

The super earth is one of the handful of planets discovered that are of the same size and orbiting distance as that of the earth. The host star of the planet is 10% the mass of the sun.

About the planet

The planet is larger than the earth and hence the name “Super Earth”. The planet could be cold according to the scientists as the star is much smaller than the sun. Due to this reason, water may not exist in its liquid state, but might occur as ice. As the planet is heavier in mass, it might take 617 days to revolve around its star.

The super earth, according to the scientist might possess “Goldilocks Zone” in the future

What are Goldilocks Zone?

Goldilocks Zone is the space around a star where temperature aptly sustains water in liquid state.  The space also supports life.

The planet is 111 light years away from the earth and hence not very possible for humans to reach the planet.