Thirty-seven years later,1April 24, 990, the space telescope named after Hubble was put into a 575-kilometer orbit around the earth by the space shuttle Discovery at the Kennedy Space Center.

199365438+On February 26th, Hubble telescope sent back the latest photos of a group of deep-space galaxies. In these photos, someone found the so-called? City of God? This photo of the galaxy is so named because there is a bright area in the center of the galaxy. After zooming in, you will find that there is a matrix of white light spots in this area, similar to a city.

But in fact, the so-called city of God does not exist, because the original image taken by Hubble telescope is black and white, not color. The Hubble photos we see now, including the so-called city of God, are artificially colored by astronomers according to the different elements contained in the subject.

Ignoring the so-called city of God, it has been 30 years since the launch of Hubble telescope. Among the many images it sent back to Earth, the most frequently mentioned and famous one was taken in 1 in April, 995? The pillar of creation?

These three pillars in the Eagle Nebula, located 7500 light years away, were later synthesized by astronomers according to the characteristics that sulfur (Liu) and hydrogen emit red light and oxygen emits green light. What we see now are colorful and magnificent pillars of creation.

According to the plan, James Webb Space Telescope, the successor of Hubble Space Telescope, will be launched on March 30th, 20021. However, because the working place of the telescope is 0/0.5 million kilometers away from the Earth, for safety reasons, NASA has postponed the launch date several times before, and does not rule out the possibility of continuing to postpone the launch.

Therefore, Hubble telescope will still be the best helper for human beings to observe the universe in the future, and Hubble users even postponed its retirement date to 2030-2040.

Whether it is the Hubble telescope already in space or the Webb telescope still on earth, these tens of billions of dollars of scientific equipment are the highest embodiment of human civilization's curiosity and thirst for knowledge.

So some people think that the universe has the meaning of existence because of human beings.