FG News

Venus like Exoplanet Possess a Thin Oxygen Atmosphere

23 Aug 16

Astronomers were intrigued by a distant planet GJ 1132b after its discovery last year. This planet has a temperature of approximately 450 degrees Fahrenheit, whereas it is situated just 39 light-years from Earth.


A Harvard astronomer Laura Schaefer and her team looked at the query of what would happen to GJ 1132b over a period of time if it began with a steamy, water-rich atmosphere.


The planet orbits around its star at a distance of only 1.4 million miles and is overflowing with ultraviolet or UV light. UV light breaks apart water molecules into hydrogen and oxygen and these can be lost into space. While hydrogen is lighter it escapes on a faster rate, whereas oxygen remains behind.

The planet has a strong greenhouse effect, adding to the star’s already extreme heat, since water vapor is a greenhouse gas. As a result, the surface could stay molten for millions of years.


Laura Schaefer stated that “On cooler planets, oxygen could be a sign of alien life and habitability. But on a hot planet like GJ 1132b, it’s a sign of the exact opposite-a planet that’s being baked and sterilized”.


Only about one-tenth of a “magma ocean” would interact with the atmosphere absorbing some of the oxygen. Whereas the remaining 90% of the oxygen streams into the space.


The model of the magma-ocean atmosphere can assist scientists to explain how Venus evolved over time. Most likely Venus began with Earthlike amounts of water, which would have been broken down by sunlight. Yet little signs of lingering oxygen is seen. The problem of the lost oxygen continues to puzzle astronomers.


Schaefer forecast that this model will offer insights into other, alike exoplanets. This work has been accepted for publication in The Astrophysical Journal.


Read more

How Stress Changes Our Brain?

16 Mar 18

Stress is a feeling of strain and pressure. Just like physical disorders, stress and other mental disorders are equally fatal. In a recent research conducte ...
Read more ...

Earth’s Vegetation and Global Warming.

15 Mar 18

The rapid deforestation can majorly effect the rising temperatures of the earth. Forest has a great role to play in regulating the surface temperature. A plant has a major role to play in climate c ...
Read more ...

A Noble Start To A Fit Tomorrow

14 Mar 18

You must have probably heard your grandparents recalling their day when they had to walk 5-7 miles for school or probably they could eat one full-sized hen. To some extent though these stories seem ...
Read more ...

Survey Reveals Mumbai To Be The Most Expensive City For Expats

13 Mar 18

The financial capital of India - Mumbai has been revealed to be the most expensive city in the world for expatriates. It has left behind cities such as Seattle and Frankfurt. The rankings are accor ...
Read more ...

Atmosphere Around Exoplanet WASP-39b

12 Mar 18

WASP-39b is an extrasolar planet discovered in 2011 by the WASP project. It is known for containing a substantial amount of water in its atmosphere. In a re ...
Read more ...

Related News