chapter 6.5 observations outside Earth's atmosphere & 6.6 the future of large telescopes

hubble space telescope

• mirror is 2.4 meters in diameter

• With the Hubble, astronomers have obtained some of the most detailed images of astronomical objects from the solar system outward to the most distant galaxies

  • Hubble Ultra-Deep Field, an image of a small region of the sky observed for almost 100 hours. It contains views of about 10,000 galaxies, some of which formed when the universe was just a few percent of its current age

• slight error its in shape, thus images become blurry

James Webb Space Telescope

• largest telescope sent into space

• now in a stable orbit about 1.5 million km from Earth (4 times further than the Moon)

• mirror: 6.5m in diameter

high-energy observations

• ultraviolet, x-ray and direct gamma-ray observations can be made only from space

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