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Light is unique in that it behaves like both a particle and a wave. Without sunlight our world would be a dead dark place. Sunlight helps us see; it keeps the Earth warm; it’s a major component in photosynthesis; it’s a source of energy as well as a source of vitamin D for humans.
Light moves at the fastest known speed in the universe, 186,282 miles per second! The Sun is almost 93 million miles from the Earth. It takes around 8 minutes for light to get from the Sun to the Earth.
Fire is the result of the combustion of organic material and oxygen. It gives off both light and heat. A gift from God.
[36:80] He is the One who creates for you, from the green trees, fuel which you burn for light.
Why to do stars shine? From Universe Today.com
“All stars, and our own Sun is just an example, are hot balls of glowing plasma held together by their own gravity. And the gravity of a star is very intense. Stars are continuously crushing themselves inward, and the gravitational friction of this causes their interiors to heat up. This heat is measured on the Kelvin scale. 1degree F is about 256 Kelvin. 1000F is about 810. A star like the Sun is a mere 5,800 Kelvin at its surface, but at its core, it can be 15 million Kelvin – now that’s hot!
“The intense pressure and temperature at the core of a star allow nuclear fusion reactions to take place. This is where atoms of hydrogen are fused into atoms of helium (through several stages).
This reaction releases an enormous amount of energy in the form of gamma rays. These gamma rays are trapped inside the star, and they push outward against the gravitational contraction of the star. That’s why stars hold to a certain size, and don’t continue contracting. The gamma rays jump around in the star, trying to get out. They’re absorbed by one atom, and then emitted again. This can happen many times a second, and a single photon can take 100,000 years to get from the core of the star to its surface.
“When the photons have reached the surface, they’ve lost some of their energy, becoming visible light photons, and not the gamma rays they started out as. These photons leap off the surface of the Sun and head out in a straight line into space. They can travel forever if they don’t run into anything.
“When you look at a star like Sirius, located about 8 light-years away, you’re seeing photons that left the surface of the star 8 years ago and traveled through space, without running into anything. Your eyeballs are the first thing those photons have encountered.
“So why do stars shine? Because they have huge fusion reactors in their cores releasing a tremendous amount of energy.”
[6:97] And He is the One who made the stars to guide you during the darkness, on land and on sea. We thus clarify the revelations for people who know. [16:12] And He commits, in your service, the night and the day, as well as the sun and the moon. Also, the stars are committed by His command. These are (sufficient) proofs for people who understand. [56:75] I swear by the positions of the stars.
With regards to our universe, there is way way way more darkness than there is light. The lighted visible universe—that’s all the stars, planets and galaxies that can be seen today—make up just 4 percent of the universe. The other 96 percent is made of things astronomers can't see, detect or even comprehend. This is dark matter. Astronomers acknowledge that this vast majority of the universe is unknown for now and may never be known.
[6:1] Praise be to GOD, who created the heavens and the earth, and made the darkness and the light. Yet, those who disbelieve in their Lord continue to deviate.
God has allowed us to make some amazing discoveries. The Hubble telescope has seen far into the universe to other galaxies millions of light years away. It has recorded light getting stretched by space. This is called red shift. We are able to see red shift from every distant galaxy and that means that space is stretching everywhere. And that is something truly amazing. Something that God revealed 1400 years ago. Our universe is expanding.
[51:47] We constructed the sky with our hands, and we will continue to expand it.
By studying how galaxies themselves are red shifted, scientists found something completely unexpected. The universe is not just expanding, thanks to Hubble [and God] it’s expanding at an ever-increasing rate and accelerating over time. By knowing that the universe is expanding, we can look back in time, billions of years, to a time before the earth and sun, to that moment when the universe began, 13.8 billions years ago (bigthink.com). The Big Bang.
The European Space Agency’s Planck Telescope is designed to look for the remains of the big bang. Planck used its 5 foot mirror and 2 detector arrays to capture light in the form of microwaves, and built a map of the furthest reaches of the universe. After 4 years of scanning, scientists are now able to glimpse a snapshot of the aftermath of the big bang in spectacular detail. Basically, we can see the light from a time when the whole universe was on fire. Not when the universe was empty space but a boiling churning plasma. Not an image of the big bang itself, but the cosmic microwave background is powerful scientific evidence that it did happen. As Submitters, we have God’s words as evidence.
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