The Hubble Space Telescope is an important tool to help us understand the origin. when it shoots the most distant objects in our universe, it will look back in time.
Now, astronomers have shot 265,000 galaxies with telescopes, dating back to 0. 5 billion years after the Big Bang.
The assembled images are from 16-year observations jointly operated by NASA and the European Space Agency (ESA)
Part of the Hubble Heritage.
This mosaic is a group of nearly 7,500 personal photos from 31 teams who have worked with Hubble for a total of 250 days.
The perspective of the sky is almost the size of the full moon night.
You can click here to get a scalable image.
Hubble's first deep space image was taken in 1995, only five years after it was launched into orbit around the Earth.
Hubble pointed out a small piece of sky over 10 days in December of that year, generating a total exposure time of 100 hours (
Like opening the notebook on the camera).
Astronomers were shocked to see more than 3,000 galaxies. A second deep-
The scene map, known as Hubble's Ultra-Deep Field, was shot after a new camera in 2004-2003.
Advanced Camera for investigation-was installed.
The telescope exposed more than 800 times in a total of 11 times. 3 days.
Back in the past, when we look at objects in space, we look back at the past in time.
It takes about eight minutes to reach us from the sun.
It takes about 1 from the moon.
Arrive at us in 3 seconds.
So when we look at distant galaxies, we look back in time.
4,000 of the earliest galaxies in our universe are drawn in the 3d universe. Although Hubble's Ultra-Deep Field captures 10,000 galaxies, its expansion seems to be faster than that of astronomers.
Among them, 100 was the most distant universe known at that time, which existed only 0. 8 billion years ago.
In 2012, a decade of observations were combined to produce images of the Hubble Deep Field.
This photo reveals that there are more than 5,000 galaxies in an area in the sky with only a tenth of the width of the full moon.
Trying to capture the most distant galaxies is not an easy task: Because so far they are also very dim.
That's why Hubble's camera lens opens for a long time, pointing to a specific part of the sky.
In this way, it can capture more light and reveal what was once hidden.
Next will be the second Hubble heritage site with more than 5,200 Hubble exposures.