According to foreign media reports, the National Aeronautics and Space Administration (NASA) recently announced that the space telescope James Webb (James Webb) launch time postponed to 2020.
It is reported that the Weber Space Telescope is the world's largest space astronomical telescope after Hubble retired. It was scheduled to be launched this year. According to NASA, human beings are expected to use it to discover alien life. Last fall, the official announcement of the launch was postponed until 2019, and NASA once again announced that Weber will not launch until 2020.
So far, this huge space telescope has cost more than $7 billion, and the staff said it needs more time to assemble and test the Weber Space Telescope.
The Weber Space Telescope, which has cost more than $7 billion, is considered the successor to the Hubble Space Telescope.
NASA and its partner European Space Agency will work together to establish a new launch date.
Once the new launch date is determined, NASA says it will again estimate the cost of the space telescope.
Staff said the total spending may exceed the $8 billion plan ceiling set by Congress. To date, NASA has invested $7 billion in Weber Space Telescope. The Weber Space Telescope is known as a "time machine" that helps humans unlock the mysteries of the universe. The telescope will be used to capture the first galaxies that were born in the early universe 13.5 billion years ago, and the origins of satellites and planets in the solar system, in exoplanets, and in the solar system. In January of this year, the telescope was successfully tested in a giant vacuum chamber at the Johnson Space Center to ensure its ability to function in space. The Webb Telescope experienced a 100-day low temperature test and the temperature dropped to hundreds of degrees below freezing to ensure it worked in extreme cold conditions.
Bill Ochs, then head of the space telescope project, said: "The successful completion of this test is a very important milestone for the Weber Space Telescope JWST."
"It tested the calibration of various scientific instruments in the telescope, the image quality of the telescope and verified the thermal performance of the telescope," he pointed out.
He said that we have now confirmed that NASA and its partners have an excellent telescope and a rich set of scientific instruments.
The Webb Space Telescope launch is postponed until 2020, spending $7 billion
According to a report by NASA, in order to detect infrared light from distant objects, the telescope must be kept at a low temperature.
The Weber Space Telescope and most of its instruments operate at a temperature of about 40 Kelvin, which is about 387 degrees Fahrenheit (zero 233 degrees Celsius). In the extra tests conducted last year, the staff also tested the telescope's 18 gold main lenses to ensure they were as smooth and smooth as a mirror.
When Hurricane Harvey attacked the Texas coast, the tests were still going on as usual. Indoors, the team used thermal sensors and dedicated cameras to monitor the telescope to track the temperature and physical location of each component as it moved.
Oaks pointed out that "after 15 years of planning and indoor manufacturing, hundreds of hours of risk reduction testing, more than 90 days of continuous testing and low temperature testing, Weber Space Telescope has achieved extraordinary success with the joint efforts of more than 100 people."
On July 20th, the engineers started cooling after vacuuming the test chamber. This process takes about 30 days; then the telescope is kept at low temperature for 30 days. On September 27th, the research team began to reheat the test room and then vacuum again.
Then on November 18th they opened the door to the test room.
Jonathan Homan, manager of the Weber Space Telescope's Low Temperature Test Program, said: "We are a comprehensive team of people from across the country who are able to create deep space in our test rooms and ensure that Weber is flawless. Complete the mission and observe the most remote corners of the universe."
"I expect (Weber) success because it will travel to the second Lagrange point after the launch to explore the origins of the solar system and other galaxies and have the opportunity to change our understanding of the universe."
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