Did You Know You are seeing the Past of the Universe

When you look at the sky in the night you see about 5000 stars as well as many galaxies for which you need telescope to view but you can see Stars in night with naked eye. An Astronomer uses a telescope to see the stars and galaxies,planets,etc but whatever he/she sees is actually the past of the Universe because the light from the stars,galaxies,etc left them hundreds,thousands,millions….of years ago.

Let’s understand this if a ray of light is sent to Alpha Centauri from Sun then it would take about 4.3 light years to reach Alpha Centauri. Similarly,When we see the sun rays we too see the past because a ray of sun takes about 8 minutes to reach the Earth at the speed of light.

So whenever you look in the sky keep in mind that you are seeing the Past.

Video Link https://youtu.be/wodCDJIBNYA