Astronomers using National Science Foundation (NSF) radio telescopes have demonstrated how a combination of gravitational-wave and radio observations, along with theoretical modeling, can turn the mergers of pairs of neutron stars into a “cosmic ruler” capable of measuring the expansion of the Universe and resolving an outstanding question over...
Continent-Wide Radio Telescope System Once Again Part of NRAO The National Science Foundation’s Very Long Baseline Array (VLBA), a continent-wide radio telescope system, will once again officially be a part of the National Radio Astronomy Observatory (NRAO) and will undergo a technical upgrade to significantly improve its capabilities. When a new...
In an unusual observation, astronomers used the National Science Foundation’s Very Long Baseline Array (VLBA) to study the effects on radio waves coming from a distant radio galaxy when an asteroid in our Solar System passed in front of the galaxy. The observation allowed them to measure the size of the asteroid, gain new information about its...