
What is Dark Energy? Inside Our Accelerating, Expanding Universe
Feb 6, 2026 · But the cosmos wouldn’t stay this way. Nine billion years after the universe began, its expansion started to speed up, driven by an unknown force that scientists have named dark energy. …
Dark Matter - Science@NASA
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 concentrated …
This explain the concept of dark energy and dark matter and their contribution to universe dynamics, especially galaxy and stellar evolution. It explains the dynamics of the universe especially expansion, …
Hubble Dark Energy - NASA Science
Aug 8, 2025 · Astronomers discuss Hubble's investigation of dark energy, the mysterious force causing the expansion of the universe to accelerate.
Expand our Knowledge of Dark Energy - NASA Science
Sep 16, 2025 · The implication that the universe is dominated by an unknown entity, now called "dark energy," that counters the attractive force of gravity, may revolutionize our understanding of …
Dark Energy - Science@NASA
Sep 9, 2025 · To figure out whether dark energy truly exists (and, if so, what it actually is), scientists are studying how it behaves. But it seems the more we learn about the mystery, the more perplexing it …
WMAP Overview - NASA Science
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.
Building Blocks - NASA Science
Oct 22, 2024 · Dark energy may compose roughly 68% of the universe, but scientists know even less about it than they do about dark matter. But something like dark energy must exist to explain the …
If the star has more matter than dark energy, an equivalent amount of matter and dark energy gets destroy and the rest of the matter formed as a dwarf. If the matter quantity larger than the dark …
Dark Energy Changes the Universe - Science@NASA
Feb 27, 2004 · Hubble observations suggest the dark energy may be Einstein's cosmological constant, an energy percolating out of the vacuum of the space between galaxies. The energy of the universe …