Question: I’m embarrassed to ask this, as I feel after working here for so long I should already know…
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Dark Energy, Universal Expansion, and Peculiar Galaxy Motions
Question: I have been hearing lately in some space documentaries that black energy, which makes the universe expand and…
Will Dark Energy Tear Apart Black Holes?
Question: Will dark energy eventually tear apart black holes, especially supermassive black holes? — Reinaldo Answer: Let’s start with…
What is the Difference Between the Redness of an Object and its Redshift?
Question: What is the difference between Doppler shift of light and Natural light spectra (blue for young and red…
How Did the First Galaxies Form?
Question: From where did this initial cloud of gases and dust come? In other words, how did the cloud…
Time Dilation and the Speed of Light
Question: T or F: Since gravitational time dilation has been confirmed to exist. The speed of light cannot be…