What Color is the Sun?

As They Might Be Giants might reming us, “The sun is a mass of incandescent gas / A gigantic nuclear furnace / Where hydrogen is built into helium / At a temperature of millions of degrees.” But what color is it? Yellow? Guess again. Here’s more from Science Focus:

The Sun emits light over a whole range of wavelengths (or colours). In fact, it does so in all parts of the electromagnetic spectrum, apart from gamma rays. The peak in the Sun’s spectrum can be used to derive its surface temperature, about 5,780 Kelvin (roughly 5,500°C). The same process can be used to establish the surface temperatures of the stars.

The peak wavelength in a spectrum also generally determines an object’s apparent colour. So, for example, cooler stars appear red and hotter stars appear blue, with orange, yellow and white stars in between. For the Sun, the spectrum actually peaks at a wavelength that we would normally describe as green.

See more!


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 30,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


Maker Business — The Defense Production Act and the global supply chain

Wearables — The eyes have it!

Electronics — Counting Pin Numbers

Python for Microcontrollers — Python on Microcontrollers Newsletter: Events, Projects, and much more! #Python #Adafruit #CircuitPython @micropython @ThePSF

Adafruit IoT Monthly — No-Code IoT with WipperSnapper, Beaming Internet across the Congo, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 10/15/2021 Featuring Kitty’s Flowers – Pair of Bluetooth Wearable Brooches – Art by Physicist (Video)

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



1 Comment

  1. So… if the sun looks yellow to us here on earth due to the way the atmosphere scatters different light wavelengths, does that mean that the sun appears white to astronauts outside of our atmosphere? For example, did it appear white to those who walked on the moon?

Sorry, the comment form is closed at this time.