Why do you think it is possible for light to "fall back"? How would this result in our seeing MILLIONS of distinct galaxies? How would it account for the specific red shifts of distant galaxies? I could go on and on but it's pointless. The answers are many-fold.Colm said:How do we know that the stars we see, or some of them are not the light from our own system falling back, and that we may be looking at light from our own star/solar system/ galaxy that has taken millions of years to fall back on its point of origin?
Yes, and my first thought has been the line spectra of the stars we observe, or the radio emissions, or gamma emissions or, or, or. As @phinds has said: the answers are many-fold.phinds said:How would it account for the specific red shifts of distant galaxies? I could go on and on but it's pointless. The answers are many-fold.
Scientists have studied the properties of light and have determined that the light we see from stars is not our own light being reflected back to us. This is because the light from stars is much older than the light from our own Sun and has traveled through vast distances in space before reaching our eyes.
One of the main pieces of evidence is the fact that stars emit different colors of light, indicating that they are made up of different elements and have different temperatures. Additionally, the positions and movements of stars in the sky have been observed and mapped, showing that they are separate objects in space and not reflections of our own light.
While it may seem like the stars are just twinkling lights in the sky, scientists have used advanced technology and telescopes to observe and study the properties of light coming from stars. These observations have confirmed that the light is coming from actual objects in space and not an optical illusion.
Yes, we can see the same stars from different parts of the world. This is because the stars are not reflections of our own light, but rather distant objects in space that can be seen from different locations on Earth. However, the position and visibility of certain stars may vary depending on the time of year and the viewer's location on Earth.
Some people have proposed alternative theories, such as the idea that the stars are actually holes in a dome or projection of light from another source. However, these theories do not have scientific evidence to support them and go against our current understanding of the properties of light and the universe. The most widely accepted explanation for the light from stars is that it is emitted by actual objects in space.