Einstein Claimed: Quasar Clocks Show Universe Was 5 Times Slower Just After the Big Bang

Astrophysics of the time of the Big Bang

In a groundbreaking study, scientists used quasars as cosmic clocks to observe the early universe moving in extreme slow motion, further validating Einstein’s theory of general relativity. By examining data from nearly 200 quasars, hyperactive supermassive black holes at the centers of the first galaxies, the team found that time seemed to flow five times … Read more

Saturn’s rings steal the show in new image from the Webb Ars Technica telescope

Saturn stars in this near-infrared image taken June 25 by the James Webb Space Telescope.

Zoom in / Saturn stars in this near-infrared image taken June 25 by the James Webb Space Telescope. The James Webb Space Telescope has observed Saturn for the first time, completing a family portrait of the Solar System’s ringed planets nearly a year after the mission’s first jaw-dropping image was released. Webb’s near-infrared camera took … Read more

Global heatwaves show climate change and El Nio are a bad combination

Global heatwaves show climate change and El Nio are a bad combination

Outdoor workers are vulnerable to sustained heatwaves like the one hitting Texas, which climate scientists warn are becoming more common. David J. Philip/AP hide caption toggle caption on/off David J. Philip/AP Outdoor workers are vulnerable to sustained heatwaves like the one hitting Texas, which climate scientists warn are becoming more common. David J. Philip/AP If … Read more

The ULA Delta IV heavy rocket puts on a show on its penultimate launch (photo)

a rocket takes off at night

a rocket takes off at night A United Launch Alliance Delta IV Heavy rocket lifted off from Cape Canaveral Space Force Base on June 22, and the launch was captured in stunning detail in photographs and video. The launch, which lifted off at 5:18 a.m. EDT (0918 GMT) from Space Launch Complex-37’s Launch Pad 37B, … Read more

The ULA Delta IV heavy rocket puts on a show on its penultimate launch (photo)

A United Launch Alliance Delta IV Heavy rocket lifted off from Cape Canaveral Space Force Base on June 22, and the launch was captured in stunning detail in photographs and video. The launch, which lifted off at 5:18 a.m. EDT (0918 GMT) from Space Launch Complex-37’s Launch Pad 37B, carried mission NROL-68 on behalf of … Read more