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How Do We Define Distance to a Star That is Currently 10 Billion Light Years From us in an Expanding Universe?

Question: It is said that light traveling from a star that is currently 10 billion light years from us…

Do Light Waves Get Stretched to Straight Lines By Moving Objects?

Question: Does light wave disintegrates(i.e. its crest and troughs vanishes leaving a straight line) when it travels unhindered and…

Can the Gravitational Affects Due to Dark Matter be Felt By a Spacecraft at the Langrange Points?

Question: Would it be possible to detect dark matter near the earth by sending out a space craft to…

Can a Person Observe a Quasar as it Appeared Later in its Life?

Question: I am a high school student and very interested in astronomy I’m only a freshman but have had…

Inconsistency Between the Age and Radius of the Universe

Question: I see often estimates that the universe is 46 billion light years in extent.  However, it is only…

Why is the CMB Uniform if the Universe Started at a Singularity?

Question: How can the CMB from the Big Bang be all around us in every direction. If the universe…

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