
Cosmic Acceleration
We’ve read about dark matter, but what about dark energy? Even though it sounds the same, it’s quite different from each other. The only similarity is that both confuse scientists and remain one of the biggest scientific mysteries in the world. Basically, with dark energy, something in space is continuously expanding at an ever-increasing rate. But only recently have scientists possibly figured out what it is.

Science News reports that “it’s the never-changing density of energy residing throughout all of space, referred to by Einstein as the “cosmical term” and now called the cosmological constant.” However, they’re unsure of how large the cosmological constant should be. It’s much more than the difference between the size of the universe and a proton. Because of this, its identity remains a mystery. Scientists have yet to discover the cosmological constant (Science News).