Though most of the galaxies in the universe are receding from Earth, some are observed to be moving toward us. Suppose a galaxy is moving toward Earth with a speed of 3485 km/s and emits light with a frequency of 4.000 X 1014 Hz. What is the frequency of the light when it reaches Earth?

That big glowy thing in the sky is called the sun

How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.

Well it depends on the object or substance