Called the Dark Energy Spectroscopic Instrument, it uses a telescope southwest of Tucson, Arizona to create a three-dimensional map of the universe over 11 billion years to see how galaxies have ...

What we saw in the DESI experiments, and now strengthened by our South Pole Telescope observations, is that dark energy is becoming weaker with time, or time-evolving. Dark energy's acceleration of ...

One of the big mysteries of the universe is how it's expanding. The phenomenon causing that expansion is known as dark energy — and recently, scientists have started to wonder if its changing.

More the fate of the Universe. Whether dark energy changes in strength or sign is key to knowing whether we'll end in a Big Freeze, a Big Rip, a Big Crunch, or some other, even more exotic fate.

The universe is only around one-third matter, and only 5 percent "regular" matter that we can observe and interact with, with the rest being dark energy. U.S. World ...

Called the Dark Energy Spectroscopic Instrument, it uses a telescope based in Tucson, Arizona to create a three-dimensional map of the universe’s 11-billion-year history to see how galaxies have ...

Called the Dark Energy Spectroscopic Instrument, it uses a telescope southwest of Tucson, Arizona to create a three-dimensional map of the universe over 11 billion years to see how galaxies have ...

If dark energy is constant, the universe will continue to expand, forever getting colder and emptier. If it’s growing in strength, the universe will expand so speedily that it’ll destroy ...