How does the sun shine on Earth but not in space?

How does the sun shine on Earth but not in space?

The light from the sun travels a straight line without scattering and all the colors stay together. Since there is virtually nothing in space to scatter or re-radiate the light to our eye, we see no part of the light and the sky appears to be black.

How does the sun not light up space?

The daytime sky is blue because light from the nearby Sun hits molecules in the Earth’s atmosphere and scatters off in all directions. At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered.

Why do stars twinkle but not the sun?

Stars twinkle because they are so far away from Earth that they appear as point sources even through powerful telescopes: the light rays emitted by them are refracted several times so that they look as if they are blinking. The sun is a star, the heart of our solar system, but we do not see the sun twinkling.

Is it pitch dark in space?

Above the Earth’s atmosphere, outer space dims even further, fading to an inky pitch-black. And yet even there, space isn’t absolutely black. The universe has a suffused feeble glimmer from innumerable distant stars and galaxies. This artist’s illustration shows NASA’s New Horizons spacecraft in the outer solar system.

Why do stars shine?

Stars shine because they are extremely hot (which is why fire gives off light — because it is hot). The source of their energy is nuclear reactions going on deep inside the stars. In most stars, like our sun, hydrogen is being converted into helium, a process which gives off energy that heats the star.

Why do stars twinkle at night *?

The movement of air (sometimes called turbulence) in the Earth’s atmosphere causes the starlight to get slightly bent as it travels from the distant star through the atmosphere to us on the ground. Some of the light reaches us directly but some gets bent slightly. This gives the illusion of twinkling.

What makes the Stars Shine in the night sky?

To understand why stars shine, we must first understand the tiny particles that make up matter. Scientists have studied matter in their laboratories for many, many years. What they have learned about matter is that it is made up of different kinds of atoms — hydrogen atoms, carbon atoms, and iron atoms, for example.

Why is the sky not bright with all the stars?

Another reason that the sky may not be bright with the visible light of all the stars is because when a source of light is moving away from you, the wavelength of that light is made longer (which for light means more red.)

Why is the sky blue while the outer space is dark?

The blue color of the sky is a result of this scattering process. At night, when that part of Earth is facing away from the Sun, space looks black because there is no nearby bright source of light, like the Sun, to be scattered. If you were on the Moon, which has no atmosphere, the sky would be black both night and day.

Why does the Sun look like a star?

Stars are actually suns, in the same way that our sun is a star. If you went out into the far reaches of the galaxy and looked back on our sun, it would look like a star. To figure out why the stars shine, you have to know what they are made of.