[01:30.72]to first conclude that our universe [01:33.76]is expanding at an ever-increasing rate. [01:37.88]That finding was based on studies of [01:41.68]huge explosive events called supernovas. [01:46.68]NASA describes ...
NASA’s Hubble Space Telescope has calibrated more than 40 “milepost markers” of space and time over the course of the last 30 years that scientists are using to measure the expansion of the universe.But the data doesn’t match with other observations from right after the big bang, and t...
New research suggests that a troubling disparity in the rate of expansion of the universe, known as the Hubble constant, may arise from the fact Earth sits in a vast underdense region of the cosmos.The issue has come to be known as the "Hubble tensio... ...
Astronomers have been puzzling over the expansion rate of the Universe and its mass for decades. If the mass of the Universe is large enough, the expansion will eventually decrease and the Universe will then collapse in on itself. However, if the density of matter in the Universe is less th...
the expansion of the universe gradually slowed down as the matter in the universe pulled on itself via gravity. More recently, the expansion has begun to speed up again as the repulsive effects of dark energy have come to dominate the expansion of the universe. Credit: NASA’s God...
Credit: NASA/CXC/M.Weiss A study led by Texas Tech University shows that supersoft X-ray emissions can come from accretion as well as nuclear fusion. For decades, astronomers and astrophysicists have used a specific type of supernova to measure the expansion of the universe. But a recent di...
Solving the discordant data on the expansion rate of the universe is like trying to thread a ‘cosmic needle’, where its hole is the H0 value measured today and the thread is brought by the model from the furthest Universe we can observe: the cosmic microwave background. Credit: NASA/...
This Hubble Space Telescope image shows one of the galaxies in the survey to refine the measurement for how fast the universe expands with time, called the Hubble constant. (Credit: NASA, ESA, and A. Riess (STScI/JHU)) The discrepancy that the universe is expanding 9 percent faster than ...
(Image credit: NASA/CXC/Univ. of Bonn/K. Migkas et al.) The universe may not be the same in every direction after all. The expansion rate of the universe appears to vary from place to place, a new study reports. This finding, if confirmed, would force astronomers to reassess just ho...
(PhysOrg.com) -- In 1998, scientists discovered that the Universe is expanding at an accelerating rate. Currently, the most widely accepted explanation for this observation is the presence of an unidentified dark energy, although several other possibilit