Have astronomers ever observed a violet shift like they have blue shifts and red shifts?

The short answer is that astronomers have been seeing violets shifts occur a lot, because they actually happen all the time. But we call them blue shifts. The way we can tell the type of shift is by looking at the light that a star emits.  Obviously this color is relative to the colors that we … Read more Have astronomers ever observed a violet shift like they have blue shifts and red shifts?

Does the wavelength of a photon change over its travel through intergalactic space?

When I took physics in college, I seem to remember a formula that related the wavelength of light to its energy. Could the wavelength of a photon of light be altered by a loss of energy, however small, over its path through intergalactic space? If that were true, looking at a trip of millions / … Read more Does the wavelength of a photon change over its travel through intergalactic space?

Can a hypothetical Planet X whip around from behind the Sun in a 3600-years orbit?

Planet X (Nibiru) is supposed to whip around from behind the sun and near-smack us every 3600 years. Almost all of the scenarios I’ve seen on YouTube require a complete suspension of orbital mechanics as currently understood. What sort of bizarre cometary orbit would be required to keep a planetary body close enough to the … Read more Can a hypothetical Planet X whip around from behind the Sun in a 3600-years orbit?