End of the world: Astronomer warns Earth will boil as the Sun grows brighter and bigger

In an article for Space.com, the space expert argued the Sun has not yet reached its full potential and is still growing brighter. 

Four billion years ago, Venus resembled the Earth but the Sun was considerably smaller and dimmer. 

With time, however, the Sun steadily grew brighter and brighter, causing surface temperatures on Venus to rise. 

Gradually, the planet’s oceans began to evaporate, blotting out the skies with enough water vapour to cause a catastrophic greenhouse gas. 

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