James Webb Space Telescope, successor of 26-year-old Hubble, may find the first galaxies that were formed in the early universe.
The National Aeronautics and Space Administration (NASA) of the United States has successfully completed building the largest space telescope — one that is 100 times powerful than the Hubble Space Telescope and may find the first galaxies that were formed in the early universe.
The James Webb Space Telescope will be the successor of NASA’s 26-year-old Hubble.
The Webb telescope’s infrared cameras are so sensitive that it needs to be shielded from the rays of the Sun. A five-layer sunshield of the size of a tennis court will prevent the heat from interfering with the telescope’s infrared sensors.
The layers work together to reduce the temperatures between the hot and cold sides of the observatory by about 298 degrees Celsius. Each successive layer of the sunshield, made of kapton, is cooler than the one below.
The space agency has also made the first important optical measurement of James Webb Space Telescope fully assembled primary mirror, called a Center of Curvature test.
“This is the only test of the entire mirror where we can use the same equipment during a before and after test,” said Ritva Keski-Kuha, NASA’s Deputy telescope manager for Webb.
“This test will show if there are any changes or damages to the optical system,” Keski-Kuha said.
The space telescope will provide images of the first galaxies ever formed, and explore planets around distant stars.
It is a joint project of the NASA, the European Space Agency and the Canadian Space Agency.
The largest artificial habitat present in the space, the International Space Station will retire in the year 2024 while China is developing its own version of International Space Station (ISS). According to reports from China Aerospace Science and Technology Corporation (CASC) China might be the only country to boast an International Space Station and entire world will rely on its service for space research.
China has started launching modules of space lab in the form of Tiangong-1 and Tiangong-2. China launched Tiangong-2 space module using Long March 2F rocket from the Jiuquan Satellite Launch Center at 14:04 UTC on September 14, 2016. China is also preparing Tianhe-1, a core space station module for the launch in 2018 which will be lifted by the most powerful Chinese rocket — Long March 5.
Several other launches will be made in coming years to complete the modular space station and by the end of 2024 it will be the only space station in service, believes CASC which is a major space developer.
China’s modular space station will be made of several modules including one core module and two lab modules. What’s striking is that the space station will have several docking ports for spacecrafts.
According to reports, it will orbit the earth at an altitude of 400 km and will have a lifespan of 10 years. Initiation of blueprint for the Chinese space station dates back to 1992 when scientists made a three-step strategy and it took them nearly three decades to make it a reality. With this, China will become the second country after Russsia to have developed a space station.
At present, scientists look towards International Space Station for space research. ISS was launched back in 1998 and since then it is the largest artificial body present in the space. It orbits Earth at an average altitude of nearly 400 km and it can be seen through naked eyes. It completes 15.54 orbits per day. The ISS serves as a microgravity and space environment research laboratory in which crew members conduct experiments in biology, human biology, physics, astronomy, meteorology, and other fields. Moreover, the ISS programme is a joint project among five participating space agencies: NASA, Roscosmos, JAXA, ESA, and CSA.
thanks: The TeCake.
dedicated by: Kavignar Thanigai.