https://apod.npub.pro/tag/spectrum/ https://apod.npub.pro/tag/spectrum/rss/ episodic Sun, 11 Jun 2023 22:10:10 GMT Sun, 11 Jun 2023 22:10:10 GMT https://apod.npub.pro/tag/spectrum/ https://nostr.build/i/p/9c7e951c9df1a990330d926e66eccf73173c3108c1406434929b6e32d04b16a1.jpg Sun, 11 Jun 2023 22:10:10 GMT https://apod.npub.pro/post/note1yxa98pcqtrk0npes3grqfeg9j59ht5vck6dhgujq4e4hcr0hfd7q0pqvh2/ https://apod.npub.pro/post/note1yxa98pcqtrk0npes3grqfeg9j59ht5vck6dhgujq4e4hcr0hfd7q0pqvh2/ note1yxa98pcqtrk0npes3grqfeg9j59ht5vck6dhgujq4e4hcr0hfd7q0pqvh2 APOD note1yxa98pcqtrk0npes3grqfeg9j59ht5vck6dhgujq4e4hcr0hfd7q0pqvh2 npub1ap0dw55xedm5w4mkcyq8m7xyluwfc680lywrvfe50vr9ckl5m3uqtf5l75 Astronomy Picture of the Day

11 June 2023

The Sun and Its Missing Colors



Image Credit: Nigel Sharp (NSF), FTS, NSO, KPNO, AURA, NSF

Here are all the visible colors of the Sun, produced by passing the Sun's light through a prism-like device. The spectrum was created at the McMath-Pierce Solar Observatory and shows, first off, that although our white-appearing Sun emits light of nearly every color, it appears brightest in yellow-green light. The dark patches in the featured spectrum arise from gas at or above the Sun's surface absorbing sunlight emitted below. Since different types of gas absorb different colors of light, it is possible to determine what gasses compose the Sun. Helium, for example, was first discovered in 1868 on a solar spectrum and only later found here on Earth. Today, the majority of spectral absorption lines have been identified - but not all.

#APOD #Light #Sun #Spectrum #star

Posted manually due to troubles at NASA APOD API

https://apod.nasa.gov/apod/ap230611.html

]]> Astronomy Picture of the Day

11 June 2023

The Sun and Its Missing Colors



Image Credit: Nigel Sharp (NSF), FTS, NSO, KPNO, AURA, NSF

Here are all the visible colors of the Sun, produced by passing the Sun's light through a prism-like device. The spectrum was created at the McMath-Pierce Solar Observatory and shows, first off, that although our white-appearing Sun emits light of nearly every color, it appears brightest in yellow-green light. The dark patches in the featured spectrum arise from gas at or above the Sun's surface absorbing sunlight emitted below. Since different types of gas absorb different colors of light, it is possible to determine what gasses compose the Sun. Helium, for example, was first discovered in 1868 on a solar spectrum and only later found here on Earth. Today, the majority of spectral absorption lines have been identified - but not all.

#APOD #Light #Sun #Spectrum #star

Posted manually due to troubles at NASA APOD API

https://apod.nasa.gov/apod/ap230611.html

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