The universe is expanding about 10% faster than it should be, and a fresh set of measurements just made the problem harder to ...

The last tests of the Ariane 5 rocket system have been finished, and ESA’s Planck satellite is sitting ready for launch at the Guiana Space Centre in Kourou. Together with ESA’s Space Telescope ...

The universe is expanding, and after decades of work, astronomers still cannot agree on how fast. That disagreement, known as ...

Minor planets are initially discovered as slowly moving unresolved sources in optical sky images taken with small astronomical telescopes. Drs. Frank Bertoldi and Wilhelm Altenhoff from the MPIfR ...