Could we exist on earth under a red giant star?

About five billion years from now, the sun’s usual source of nuclear energy will be depleted. It will begin to expand and cool significantly, becoming a ‘red giant’. Its outer layers will be thrown off into space. As the sun loses mass, its gravitational pull will weaken and the planets’ orbit will widen. We know that mercury and venus will not be able to outrun the expanding sun, and will be engulfed and incinerated.

Earth may just outrun the swelling red giant but its proximity, and the resulting rise in temperature, will probably destroy all life on Earth, and possibly the planet itself. However, there’s no reason that life could not survive on another planet (or moon) sufficiently far out from the sun, as long as it lies within the sun’s expanded ‘habitable zone’. Life could also survive on suitably hospitable planets around other Red Giants.

COULD LIFE HAVE ORIGINATED DEEP INSIDE EARTH?

The idea that life could thrive deep below earth’s surface was once regarded as heretical. Lacking any obvious source of energy, such as sunlight, and subjected to intense heat and pressure, subterranean organism would seem to have little chance of survival. Yet since the 1980s, bacteria, fungi and worm-like creatures have been found lurking kilometres down in mine boreholes and deep sea sediments. These organisms have extraordinary source of energy. For example, some bacteria rely on the reactions between water and rocks to get there energy.

Dating techniques suggest bacteria have existed at depths of several kilometres for at least 30 million years. What isn’t clear is where they fit into the history of life on earth: were they washed down, or are they progenitors of life on the surface? Either way, their existence has boosted hopes for life on Mars. While none has been found on the surface, NASA’s curiosity rover recently detected methane coming from within the planet – which may be the result of subterranean organisms.

                                    15 LAWS OF LIFE 

1. Love Is The Law Of Life: All love is expansion, all selfishness is contraction. Love is therefore the only law of life. He who loves lives, he who is selfish is dying. Therefore, love for love's sake, because it is law of life, just as you breathe to live.

2. It's Your Outlook That Matters: It is our own mental attitude, which makes the world what it is for us. Our thoughts make things beautiful, our thoughts make things ugly. The whole world is in our own minds. Learn to see things in the proper light.

3. Life is Beautiful: First, believe in this world - that there is meaning behind everything. Everything in the world is good, is holy and beautiful. If you see something evil, think that you do not understand it in the right light. Throw the burden on yourselves!

4. It's The Way You Feel: Feel like Christ and you will be a Christ; feel like Buddha and you will be a Buddha. It is feeling that is the life, the strength, the vitality, without which no amount of intellectual activity can reach God.

5. Set Yourself Free: The moment I have realised God sitting in the temple of every human body, the moment I stand in reverence before every human being and see God in him - that moment I am free from bondage, everything that binds vanishes, and I am free.

6. Don't Play The Blame Game: Condemn none: if you can stretch out a helping hand, do so. If you cannot, fold your hands, bless your brothers, and let them go their own way.

7. Help Others: If money helps a man to do good to others, it is of some value; but if not, it is simply a mass of evil, and the sooner it is got rid of, the better.

8. Uphold Your Ideals: Our duty is to encourage every one in his struggle to live up to his own highest idea, and strive at the same time to make the ideal as near as possible to the Truth.

9. Listen To Your Soul: You have to grow from the inside out. None can teach you, none can make you spiritual. There is no other teacher but your own soul.

10. Be Yourself: The greatest religion is to be true to your own nature. Have faith in yourselves! 

11. Nothing Is Impossible: Never think there is anything impossible for the soul. It is the greatest heresy to think so. If there is sin, this is the only sin - to say that you are weak, or others are weak.

12. You Have The Power: All the powers in the universe are already ours. It is we who have put our hands before our eyes and cry that it is dark.

13. Learn Everyday: The goal of mankind is knowledge... now this knowledge is inherent in man. No knowledge comes from outside: it is all inside. What we say a man 'knows', should, in strict psychological language, be what he 'discovers' or 'unveils'; what man 'learns' is really what he discovers by taking the cover off his own soul, which is a mine of infinite knowledge.

14. Be Truthful: Everything can be sacrificed for truth, but truth cannot be sacrificed for anything.

15. Think Different: All differences in this world are of degree, and not of kind, because oneness is the secret of everything.

-- By Swami Vivekanand

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 "Go on; remember — patience and purity and courage and steady work. . . . So long as you are pure, and true to your principles, you will never fail"    - Swami Vivekanand