fr en es pt
        rss astronoo
 Automatic translation  Automatic translation Category: probes and satellites
Updated January 05, 2022
  James Webb Space Telescope

Image: The light collecting surface of the 18 segmented mirrors of 1.315 m side of the James Webb Space Telescope will make it possible to capture more photons and therefore to see further. We gain a factor of 100 between Hubble and James Webb Space Telescope (100 hours break from HST = 1 hour break from JWST).

nota: Infrared radiation is the segment of the electromagnetic spectrum located between the visible domain and that of the microwaves. Its wavelengths range from 0.78 µm (closest to the visible spectrum) to 5 mm (closest to microwaves). The infrared domain segment is divided into near infrared "PIR" (0.78 µm - 3 µm), mid infrared "MIR" (3 µm - 50 µm) and far infrared "LIR" (from 50 µm - 5 mm).
  Ultra deep field galaxies with Hubble

Image: A great diversity of galaxies, some of which are 11 billion years old, dot the ultra-deep field of the cosmic tapestry. This composite image was created from photographs taken by the Hubble Telescope between 2003 and 2012. In this tiny hole in the southern celestial vault, we can count around 10,000 galaxies.
With JWST, by observing in the mid-infrared with the same exposure time, we could see 100 times more galaxies than in the HST image.
Credit Nasa, ESA

  Atmosphere of exoplanets

Image: JWST went in search of life.
Credit ESA David Sing

1997 © − Astronomy, Astrophysics, Evolution and Earth science.
Contact    Mentions légales