Question

In 1998, scientists discovered that the expansion of the universe has been accelerating.

What force is causing this phenomena?

Answer 1

It's dark energy

Step-by-step explanation:

dark energy

Researchers discovered in 1998 that the universe is expanding at an accelerating rate — a surprising phenomenon believed to be due to a mysterious force called dark energy. Scientists don't know much about dark energy, except that it may be a property of the vacuum.

I hope it helped u!

Answer 2

Dark Energy for sure. Trust me it's right ;)

Step-by-step explanation: