1,000,002,021

We all die, earth, sun, the Milky Way, galaxies, etc., etc but we already know that. Regarding earth, the sun will do the job, expanding and getting hotter, first doing away with CO2, the gas all plants depend on and then, completing the job by engulfing earth as it gets bigger. When this happens, we go so ... the exact year said life ends, is, you guessed it, 1,000,002,021.  :)

The Sun will end all life on Earth

For now, this story may sound like sci-fi. But as time goes by – a lot of time – the Sun will grow in size as it reaches the end of its life as a giant star. As it grows, the Sun will emit increasing amounts of thermal energy, and will eventually engulf all inner planets of the Solar system, including Earth. This process means that our days on Earth are numbered.

Advance mathematical models have predicted that the Sun's expansion will significantly worsen air quality, as Earth temperatures rise. According to these calculations, life on Earth will be impossible by the year 1,000,002,021 – which means there are still 999,999,996 years to go until then.

Although the end is still billions of years away, the Sun is already causing some disturbances. Last year, NASA detected a large number of solar eruptions and coronal mass ejections (CME) which ejected billions of tons of particles and magnetic field towards Earth – resulting in the most intense solar storm in two decades. Solar storms are known to cause changes in the atmosphere, reducing available oxygen. As time goes by, this phenomena will continue to alter the atmosphere, reducing oxygen levels and increasing global temperatures.

 

Survival on planet Earth will be impossible in about 1 billion years,
when conditions become too extreme for life as we know it.