contestada

What makes dark energy "dark"?
A. its unknown nature
B. its completely black color
C. its existence beyond the visible spectrum
D. its inevitable creation of a totally destructive Big Crunch

Nucleosynthesis began when _____ and ended when _____.
A. the Big Bang occurred; the Big Crunch occurred
B. nuclear reactions could first occur; matter had condensed into galaxies and stars
C. the cosmic microwave background radiation formed; dark energy replaced it as the dominant energy form
D. the universe had cooled enough for atoms to combine; protons and neutrons were too far apart to form nuclei

Respuesta :

taskmasters
Dark energy makes "dark" the answer is option A. its unknown nature.

Nucleosynthesis began when the answer is option D. the universe had cooled enough for atoms to combine an ended when the answer is option D. protons and neutrons were too far apart to form nuclei.