May 2, 2025 · Some scientists think that dark energy is a fundamental, ever-present background energy in space known as vacuum energy, which could be equal to the cosmological constant, …

Aug 29, 2025 · Dark energy is the name scientists have given to whatever is causing our universe to expand at an accelerating rate over time — another cosmic mystery. Dark energy isn't …

Oct 10, 2025 · Dark Energy Explorers are creating the largest and most detailed map yet of galaxies in the early universe. They need your help to identify the faint, ancient, distant …

Oct 22, 2024 · The reason for this remains unclear, but the leading explanation is that the universe contains something that has a repulsive gravitational effect – it pushes the universe …

Aug 8, 2025 · Astronomers discuss Hubble's investigation of dark energy, the mysterious force causing the expansion of the universe to accelerate.

Sep 9, 2025 · Though weak on small scales, dark energy dominates across vast stretches of the cosmos. It makes up about 68% of the universe's total contents, but so far we don't know …

Sep 26, 2025 · Determined that dark energy, in the form of a cosmological constant, makes up about 70% of the universe, causing the expansion rate of the universe to speed up.

Feb 27, 2004 · Probing dark energy, the energy in empty space causing the expanding universe to accelerate, calls for accurately measuring how that expansion rate is increasing with time.

Dec 23, 2025 · Many scientists believe an invisible force, called “dark energy,” causes this acceleration. We can think of dark energy as an “antigravity” or repelling force that pushes …

Dec 6, 2023 · One of the mission’s primary science goals involves using supernovae to help pin down the nature of dark energy – the unexplained cosmic pressure that’s speeding up the …