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 luminous!

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 luminous!

Chapter 4: Eta Carinae

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.

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Chapter 4: Eta Carinae

Chapter 4: Eta Carinae

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