Chapter 8: The Antennae Galaxies
The galaxy pair NGC 4038 and NGC 4039 is commonly referred to as the Antennae Galaxies because their distorted streamer-like spiral arms look like ins...
NASA's Touch the Invisible Sky Audio Podcasts
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About
Multi-wavelength astronomy - the study of the universe at wavelengths beyond the visible, has revolutionized our understanding and appreciation of the cosmos. Hubble, Chandra, and Spitzer are examples of powerful, space-based telescopes that complement each other in their observations spanning the electromagnetic spectrum. NASA's Braille book "Touch the Invisible Sky" presents the first printed introduction to modern, multi-wavelength astronomy studies to the sight disabled community.
Chapter 9: Final Thoughts
Imagine that you could only hear sound from the middle three keys on a piano and were asked to name a song, or were only allowed to touch one petal of...
Chapter 6: Kepler's Supernova Remnant
Four hundred years ago, the famous astronomer Johannes Kepler (best known as the discoverer of the laws of planetary motion), was startled by the sudd...
Chapter 7: Whirlpool Galaxy (M51)
Galaxies are collections of millions to billions of stars gravitationally bound together. Galaxies come in different shapes and sizes, and fall into t...
Chapter 4: Eta Carinae
Of the estimated three hundred billion stars in our galaxy, Eta Carinae may well be the biggest and brightest of them all. Weighing in at 150 times th...
Chapter 5: Crab Nebula
A supernova is the dramatic end of a supergiant star's life. The Crab Nebula is the remnant of a powerful supernova which was visible from Earth in th...
Chapter 2: Multi-Wavelength Telescopes
All telescopes perform basically the same function. They gather as much light as possible from a faint astronomical object, and focus the light onto a...
Chapter 3: The Sun
The star that dominates our daytime sky and provides the heat and light to support life on Earth is, of course, the Sun. In astronomical terms it is v...
Introduction (Narrated by Simon Steel)
The Universe is huge. Almost everything that we know about distant objects in the Universe comes from studying the light that is emitted or reflected ...
Chapter 1: Kinds of Light
When we think of light, we think of sunshine or the colors of the rainbow. But colors, like sounds, are limited by the range of our senses. Just as th...