Topic
Dark Energy
4 questions tagged Dark Energy — spanning every one of the seven Ws.
why
Why is dark energy making the universe expand faster?
Dark energy is the name given to whatever is driving the accelerated expansion of the universe. Observations of distant supernovae in the late 1990s showed that expansion is speeding up, not slowing down.
CosmologyDark Energy
when
When was dark energy first reported from supernova observations?
Evidence for the accelerating expansion of the universe was published in 1998. Two teams studied distant Type Ia supernovae.
SpaceDark Energy
when
When was the universe’s accelerating expansion discovered?
In 1998, two teams reported that the universe’s expansion is speeding up, not slowing down.
SpaceDark energy
why
Why is the universe expanding faster today than it used to?
Distant supernova observations showed in 1998 that cosmic expansion is accelerating, likely because of dark energy. Dark energy seems to act like a property of space itself.
CosmologyDark energy