It’s remarkable,” said Prof Brant Robertson, an astrophysicist at the University of California, Santa Cruz. “These galaxies are very, very young yet they have already become hotbeds for star formation. These snapshots of the infant universe show that the first stars and galaxies had already formed and were evolving much earlier than most scientists had expected. Intriguingly, this stellar fecundity is shared by several other ancient galaxies photographed by the James Webb telescope (JWST). It also turns out to be tiny compared with our own galaxy, yet it was clearly creating new stars at a rate comparable to the Milky Way. The prosaically named JADES-GS-z13-0 appears as it did a mere 320m years after the big bang, long before the creation of our own planet. Among the objects caught in the telescope’s giant mirror is one that turns out to be the oldest known galaxy in the universe. It will orbit the sun at about 1.5 million kilometres away from Earth.The world of astronomy has been dazzled, nevertheless.

Orbit : Hubble orbits around the Earth at an altitude of ~570 km.

So, Webb will have a larger field of view compared to the camera on micron Hubble’s mirror was much smaller – 2.4 metres in diameter.

Size : Webb’s primary mirror has a diameter of 6.5 metres.It could observe only a small range in the infrared from 0.8 to 2.5 microns. The instruments on Hubble see mainly in the ultraviolet and visible part of the spectrum. Wavelength : The James Webb Space Telescope will observe primarily in the infrared range and provide coverage from 0.6 to 28 microns.Also a large sunshield made of silicon-coated and aluminium-coated Kapton will keep its mirror and instruments below 50 K (−223.2 ☌).ĭifferences between Webb and the Hubble Telescope.The telescope must be kept very cold in order to observe in the infrared without interference, so it will be deployed in space near the Sun–Earth L2 Lagrange point.JWST will study various phases in the history of the universe, from the formation of solar systems to the evolution of our own Solar System.The James Webb Space Telescope (JWST or “Webb”) is a joint NASA–ESA–CSA space telescope that is planned to succeed the Hubble Space Telescope as NASA’s flagship astrophysics mission.The Hubble telescope is named after astronomer Edwin Hubble and is one of NASA’s Great Observatories, along with the Compton Gamma Ray Observatory (1991–2000), the Chandra X-ray Observatory (1999–present), and the Spitzer Space Telescope (2003–2020).It was not the first space telescope, but it is one of the largest and most versatile, renowned both as a vital research tool and as a public relations boon for astronomy.The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.

Though Webb is often called the replacement for the Hubble Space Telescope, NASA said it prefers to call it a successor. The James Webb Space Telescope, NASA’s most powerful telescope, is scheduled to be rocketed into orbit no earlier than December 22.

James webb vs hubble images