The UniverseAnswer
What is empty space actually made of?
Removing matter does not remove the physical fields used to describe nature.
TOPIC
dark energy.
Stories and answers about #dark energy
FROM THE QUESTION LIBRARY
Short answers, with sources.
The UniverseAnswer
Why is the expansion of the universe speeding up?
The acceleration is well supported by observations. What drives it, and whether that driver changes with time, remain open questions.
The UniverseAnswer
Will the universe end, and if so, how?
The Sun has about 5 billion years left, and the universe may fade out over trillions of years, so here is what the evidence says about each possible ending.