Blick in die Vergangenheit des Universums

Astronomers just discovered a galaxy that existed only 300 million years after the Big Bang.

That means we are seeing light that traveled for over 13 billion years to reach us.

When you look at stars, you are literally looking back in time.

The light from our Sun takes 8 minutes to reach Earth, so if it suddenly disappeared,

we would not know for 8 whole minutes. The North Star you see tonight actually shows how it looked

433 years ago. Some stars we observe might have already exploded and died, but their light

is still traveling through space toward us. This is why astronomers call telescopes

time machines. Every time you gaze at the night sky, you are witnessing ancient history