Tag: Space telescope

You can call me Ray Gamma photons – formerly known as rays – the extreme EM spectrum
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Gamma photons – formerly known as rays – the extreme EM spectrum

John Healy1 Comment

Table of contents IntroductionAbout gamma photonsSolar gamma photons INTRODUCTION Rays, radiation, particles, waves, fields … what’s in a name, eh? There’s a history [1], an evolution of discovery and understanding. So that sometimes a “particle” by another name is something more interesting [2]. While quantum field theory (QFT) has penetrated the way many physicists think… Continue reading Gamma photons – formerly known as rays – the extreme EM spectrum

Cosmic Cliffs Beyond Hubble – adventure begins for James Webb Space Telescope
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Beyond Hubble – adventure begins for James Webb Space Telescope

John Healy9 Comments

Update 7-15-2022 • NASA > APOD > “Webb’s Southern Ring Nebula” (July 14, 2022) Explanation: Cataloged as NGC 3132 the Southern Ring Nebula is a planetary nebula, the death shroud of a dying sun-like star some 2,500 light-years from Earth. Composed of gas and dust the stunning cosmic landscape is nearly half a light-year in… Continue reading Beyond Hubble – adventure begins for James Webb Space Telescope

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Celebrating Spitzer space telescope – seeing the invisible for 16 years

John Healy

As noted in my post on X-rays, looking beyond what our eyes can see – seeing what is hidden to visible light – tells a better cosmic story. Multi-wavelength observations refine and extend our view of the universe beyond our familiar vision. So, today we celebrate the Spitzer space telescope, one of NASA’s great space… Continue reading Celebrating Spitzer space telescope – seeing the invisible for 16 years

General · Media · Photo

Celebrating X-Ray Astronomy — Chandra, NuSTAR

John Healy13 Comments

This Space.com article “NASA Unveils Amazing Cosmic Views as Chandra X-Ray Observatory Turns 20” (July 28, 2019) reminded me of the limited vision provided only with visible light. Consumer security (and other) cameras have accustomed more of us to regularly seeing infrared light (a longer wavelength part of the electromagnetic spectrum). And that “light” behaves… Continue reading Celebrating X-Ray Astronomy — Chandra, NuSTAR