To give us a taste of just how big everything is, the scientists using the eROSITA X-ray telescope have created the largest X-ray map of the universe ever. The map, which is part of the eROSITA ...

Scientists have made the largest 3D map of the universe, measuring how fast it has expanded over billions of years by using the most precise measurements to date. An international team ...

NASA’s newest space telescope rocketed toward orbit Tuesday to map the entire sky like never before — a sweeping look at hundreds of millions of galaxies.

That meant that things farther away from Earth were moving away faster. In other words, the universe must be expanding. He announced his finding in 1929. The ratio of distance to redshift was 170 ...