The universe could be twice as old if light were tired and physical constants changed

Universe Today

When the James Webb Space Telescope began collecting data, it gave us an unprecedented view of the distant cosmos. The faint red-shift galaxies seen by Hubble as mere smudges of light have been revealed as objects of structure and shape. And astronomers were faced with a small problem. Those early galaxies seemed overdeveloped and too … Read more

Mars’ climate changed dramatically 400,000 years ago, finds Chinese rover

China’s Zhurong Mars rover has found evidence of a dramatic change in Mars’ climate 400,000 years ago, in the form of dark ridges above bright dunes rippling across the sands of Utopia Planitia, which the rover is exploring. Scientists led by Li Chunlai from the National Astronomical Observatory of the Chinese Academy of Sciences used … Read more