NASA's Touch the Invisible Sky Audio Podcasts
Audio Podcasts of NASA's "Touch the Invisible Sky", presented by the Chandra X-ray Observatory
- Update frequency
- every 15 days
- Average duration
- 3 minutes
- Episodes
- 10
- Years Active
- 2008
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 insect antennae. Initially two separate spiral galax…
00:04:08 |
Thu 12 Jun 2008
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 a plant, and were asked to name the flower. The …
00:01:23 |
Thu 12 Jun 2008
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 three broad categories: spiral (shaped like a pin…
00:04:17 |
Tue 06 May 2008
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 sudden appearance of a "nova" of "new star" in the we…
00:04:24 |
Tue 06 May 2008
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 the year 1054. This supernova was so bright that …
00:03:29 |
Thu 03 Apr 2008
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 the mass of our Sun, it is five million times as l…
00:03:26 |
Thu 03 Apr 2008
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 very close, 150 million kilometers (93 million mil…
00:05:02 |
Thu 13 Mar 2008
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 detector. Historically, the gathering of light w…
00:03:39 |
Thu 13 Mar 2008
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 there are sounds that we cannot hear because the pi…
00:05:47 |
Tue 29 Jan 2008
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 by them. On Earth, geologists can study rocks by …
00:01:27 |
Tue 29 Jan 2008
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